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Thunderstorms with isolated large hail and gusty winds will be possible mainly this evening and tonight across parts of southwest/south-central Texas towards the middle Texas Coast, and this afternoon across coastal/southern Louisiana.
← back to overviewSPC AC 301246
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0746 AM CDT Thu Apr 30 2026
Valid 301300Z - 011200Z
THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF TEXAS AND COASTAL/SOUTHERN LOUISIANA
### SUMMARY
Thunderstorms with isolated large hail and gusty winds will be possible mainly this evening and tonight across parts of southwest/south-central Texas towards the middle Texas Coast, and this afternoon across coastal/southern Louisiana.
Texas
Strong westerly mid-flow will be maintained across the southern Plains into the Southeast today, as a mid/upper-level low currently off the coast of Baja California quickly moves eastward through the period. A surface front is currently stalled across parts of south TX, and most of the thunderstorms forecast to develop across TX through tonight are expected to remain elevated. Ascent preceding the shortwave trough should eventually encourage convection to develop near the TX Big Bend late this evening, and spread eastward towards the middle TX Coast through early Friday morning. Sufficient MUCAPE and strong cloud-layer shear will support an isolated threat for severe hail with any elevated supercells that can develop. Strong to locally damaging winds may also occur as supercells encounter greater instability across south-central to coastal TX late tonight, even if they remain slightly elevated. Overall confidence in coverage of severe convection remains too low to include greater severe hail probabilities and a Slight Risk with this update.
Coastal/Southern Louisiana
A convectively reinforced surface front is draped across southern/coastal LA this morning, with thunderstorms ongoing to its north. Greater instability will exist to the south of the front across coastal LA this afternoon. Thunderstorms that develop/move across the front later today could pose some risk for locally damaging winds and marginally severe hail given weak to moderate instability and strong deep-layer shear.
Coastal South Carolina
Thunderstorms capable of producing occasional strong/gusty winds should move offshore within the next hour or two. The overall severe wind threat appears too limited to include 5% probabilities.
..Gleason/Jewell.. 04/30/2026
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1630Z
Isolated severe thunderstorm development is possible across middle Texas coastal areas, parts of southeastern Louisiana and the western Florida Panhandle Friday afternoon through Friday night.
← back to overviewSPC AC 300454
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1154 PM CDT Wed Apr 29 2026
Valid 011200Z - 021200Z
THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FRIDAY AFTERNOON INTO FRIDAY NIGHT ACROSS PARTS OF MIDDLE TEXAS COASTAL AREAS…SOUTHEASTERN LOUISIANA…THE FLORIDA
### SUMMARY
Isolated severe thunderstorm development is possible across middle Texas coastal areas, parts of southeastern Louisiana and the western Florida Panhandle Friday afternoon through Friday night.
Discussion
Latest model output offers little change concerning the forecast evolution of the large-scale pattern through this period. Substantive amplification within the split westerlies emanating from the mid-latitude Pacific still appears probable Friday through Friday night, including building ridging at mid-levels along an axis west of 140W longitude into northwestern British Columbia, and on a larger-scale eastward across the Canadian Prairies and northern U.S. Rockies. Within the larger-scale ridging, a modest mid-level trough and developing embedded low are forecast to slowly dig to the west of the U.S. Pacific coast. At the same time, broad upper ridging may gradually build across the subtropical eastern Pacific toward Baja California.
Downstream, a confluent regime will be maintained across and east of the Rockies, and likely become enhanced at mid-levels across the southern Great Plains through lower Mississippi Valley, as short wave troughing digs to the southwest of an elongated area of lower heights slowly shifting eastward through the Ontario/Quebec/Great Lakes and Northeast vicinity.
A short wave perturbation reaching the Texas Big Bend vicinity by 12Z Friday probably will undergo shearing as it progresses through the confluence to the south of the digging trough. However, as a reinforcing cool surge noses southward to the lee of the southern Rockies, across and south/southeast of the Texas Big Bend, guidance suggests that forcing for ascent may remain sufficient to support a developing wave along a stalled frontal zone, across middle Texas coastal areas through the eastern Gulf coast vicinity Friday afternoon through Friday night.
Middle Texas coastal plain through western Florida Panhandle
Large-scale forcing for ascent, aided by warm advection along and to
the cool side of the surface front, may support a swath of mostly weak thunderstorm activity across much of the Gulf into southern Atlantic coast Friday through Friday night. Forecast soundings continue to indicate thermodynamic profiles with little potential to support severe hail and wind, except perhaps in immediate proximity to the surface front. Warm elevated mixed-layer air, particularly across parts of Deep South Texas, may tend to inhibit thunderstorm initiation to the south of the front.
Based on latest model output, severe weather potential for this period appears a bit more conditional, dependent upon both the evolution of the surface wave and the degree of destabilization along the frontal zone, which remain uncertain. However, it still appears possible that strengthening deep-layer shear and forcing for ascent near the frontal wave could support isolated supercell development across the middle Texas coastal plain by Friday afternoon, across southeastern Louisiana parishes by late Friday evening, and into the western Florida Panhandle toward 12Z Saturday.
..Kerr.. 04/30/2026
CLICK TO GET WUUS02 PTSDY2 PRODUCT
NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 1730Z
Strong storms may impact parts of northern Florida and southern Georgia Saturday with potential for some of this activity to become severe.
← back to overviewSPC AC 300728
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0228 AM CDT Thu Apr 30 2026
Valid 021200Z - 031200Z
THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS SATURDAY ACROSS PARTS OF NORTHERN FLORIDA AND ADJACENT SOUTHERN GEORGIA.
### SUMMARY
Strong storms may impact parts of northern Florida and southern Georgia Saturday with potential for some of this activity to become severe.
Discussion
Within amplified ridging across the mid-latitude eastern Pacific by the outset of the period, models indicate that a mid-level high may begin to form over the northeastern Pacific, roughly near 50N/140W, while an evolving low to its south digs offshore of the California coast. Downstream flow is forecast to remain broadly confluent across and east of the Rockies, with one notable short wave perturbation pivoting east of the Ozark Plateau through the Mid Atlantic coast by 12Z Sunday. This likely will be preceded by a shearing impulse, emerging from the subtropical eastern Pacific today, across the eastern Gulf Coast states through southern Mid Atlantic by late Saturday afternoon.
In lower-levels, models indicate that these developments will be accompanied significant surface cyclogenesis offshore of the Atlantic Seaboard. It remains a bit unclear whether this will initiate from a developing frontal wave initially offshore of the Carolina coast, before migrating northeastward, or in association with continuing development of a wave initially forming Friday near/offshore of the lower to middle Texas coast.
Regardless, in association with the wave approaching from the Gulf, a corridor of pre-frontal boundary-layer destabilization appears possible across the Florida Big Bend vicinity through southern Georgia/northern Florida Atlantic coastal areas by mid to late Saturday afternoon. Coinciding with strengthening southwesterly to westerly wind fields, including 30-70+ kts in the 850-500 mb layer, if this occurs, it is possible that the environment could become conducive to severe thunderstorm development. This may include evolving supercell structures, and perhaps a small organizing convective system.
..Kerr.. 04/30/2026
CLICK TO GET WUUS03 PTSDY3 PRODUCT
NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED BY 1930Z
You are looking at an outlook that is part of the medium range forecast (the outlook for days 4-8). The most important thing to note is that lack of a risk does not mean zero risk. Generally speaking, confidence has to be pretty high for the Storm Prediction Center to have an outlook area this far into the future.
When no specific risk areas are shown, you might see one of these phrases:
If you bookmark this page, it will continue to update with each new outlook that is issued.
| Day 4 | Sunday, May 3 | potential too low |
| Day 5 | Monday, May 4 | potential too low |
| Day 6 | Tuesday, May 5 | predictability too low |
| Day 7 | Wednesday, May 6 | predictability too low |
| Day 8 | Thursday, May 7 | predictability too low |
← back to overviewZCZC SPCSWOD48 ALL ACUS48 KWNS 300900 SPC AC 300900
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0400 AM CDT Thu Apr 30 2026
Valid 031200Z - 081200Z
DISCUSSION
Late this coming weekend into early next week, it still appears that at least a transient blocking high may continue to evolve offshore of the British Columbia/Pacific Northwest coast. It remains a bit uncertain how long this will persist before becoming suppressed, and an evolving low to its southeast is forced inland across southern California into the Southwest.
Latest medium range guidance continues to indicate that it is possible that a short wave perturbation could emerge from the remnant low/troughing, in advance of another significant short wave impulse emerging from the higher latitudes before amplifying southeastward to the lee of the Rockies, through the Atlantic Seaboard by the end of the period. However, it now appears probable that modest troughing, perhaps with a continuing cyclonic circulation, will linger near and south of the Southwestern international border.
In lower levels, southerly moist return flow may commence by early next week across the southern into central Great Plains as surface troughing deepens to the lee of the Rockies. This may begin to more substantively advect northeastward toward the Ohio Valley, in advance of a southward advancing cold front associated with the digging mid-level troughing. However, there is notable spread among the model output concerning potential surface cyclogenesis, near and northeast of the Rockies.
Widely scattered strong to severe thunderstorm development appears possible from parts of the central and southern Great Plains into the Mississippi Valley by Tuesday, if not Monday. However, inhibition associated with warm elevated mixed-layer air overspreading the southern Great Plains may become a limiting factor, as low-level moisture becomes more supportive of strong destabilization.
There remains at least some signal in the model output for potentially more widespread strong to severe thunderstorm development across the lower/middle Mississippi Valley into Ohio Valley by next Wednesday, perhaps into Thursday. However, with uncertainties remaining sizable at this extended time frame, severe probabilities still appear less than 15 percent.
..Kerr.. 04/30/2026
CLICK TO GET WUUS48 PTSD48 PRODUCT
You are looking at an outlook that is part of the medium range forecast (the outlook for days 4-8). The most important thing to note is that lack of a risk does not mean zero risk. Generally speaking, confidence has to be pretty high for the Storm Prediction Center to have an outlook area this far into the future.
When no specific risk areas are shown, you might see one of these phrases:
If you bookmark this page, it will continue to update with each new outlook that is issued.
| Day 4 | Sunday, May 3 | potential too low |
| Day 5 | Monday, May 4 | potential too low |
| Day 6 | Tuesday, May 5 | predictability too low |
| Day 7 | Wednesday, May 6 | predictability too low |
| Day 8 | Thursday, May 7 | predictability too low |
← back to overviewZCZC SPCSWOD48 ALL ACUS48 KWNS 300900 SPC AC 300900
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0400 AM CDT Thu Apr 30 2026
Valid 031200Z - 081200Z
DISCUSSION
Late this coming weekend into early next week, it still appears that at least a transient blocking high may continue to evolve offshore of the British Columbia/Pacific Northwest coast. It remains a bit uncertain how long this will persist before becoming suppressed, and an evolving low to its southeast is forced inland across southern California into the Southwest.
Latest medium range guidance continues to indicate that it is possible that a short wave perturbation could emerge from the remnant low/troughing, in advance of another significant short wave impulse emerging from the higher latitudes before amplifying southeastward to the lee of the Rockies, through the Atlantic Seaboard by the end of the period. However, it now appears probable that modest troughing, perhaps with a continuing cyclonic circulation, will linger near and south of the Southwestern international border.
In lower levels, southerly moist return flow may commence by early next week across the southern into central Great Plains as surface troughing deepens to the lee of the Rockies. This may begin to more substantively advect northeastward toward the Ohio Valley, in advance of a southward advancing cold front associated with the digging mid-level troughing. However, there is notable spread among the model output concerning potential surface cyclogenesis, near and northeast of the Rockies.
Widely scattered strong to severe thunderstorm development appears possible from parts of the central and southern Great Plains into the Mississippi Valley by Tuesday, if not Monday. However, inhibition associated with warm elevated mixed-layer air overspreading the southern Great Plains may become a limiting factor, as low-level moisture becomes more supportive of strong destabilization.
There remains at least some signal in the model output for potentially more widespread strong to severe thunderstorm development across the lower/middle Mississippi Valley into Ohio Valley by next Wednesday, perhaps into Thursday. However, with uncertainties remaining sizable at this extended time frame, severe probabilities still appear less than 15 percent.
..Kerr.. 04/30/2026
CLICK TO GET WUUS48 PTSD48 PRODUCT
You are looking at an outlook that is part of the medium range forecast (the outlook for days 4-8). The most important thing to note is that lack of a risk does not mean zero risk. Generally speaking, confidence has to be pretty high for the Storm Prediction Center to have an outlook area this far into the future.
When no specific risk areas are shown, you might see one of these phrases:
If you bookmark this page, it will continue to update with each new outlook that is issued.
| Day 4 | Sunday, May 3 | potential too low |
| Day 5 | Monday, May 4 | potential too low |
| Day 6 | Tuesday, May 5 | predictability too low |
| Day 7 | Wednesday, May 6 | predictability too low |
| Day 8 | Thursday, May 7 | predictability too low |
← back to overviewZCZC SPCSWOD48 ALL ACUS48 KWNS 300900 SPC AC 300900
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0400 AM CDT Thu Apr 30 2026
Valid 031200Z - 081200Z
DISCUSSION
Late this coming weekend into early next week, it still appears that at least a transient blocking high may continue to evolve offshore of the British Columbia/Pacific Northwest coast. It remains a bit uncertain how long this will persist before becoming suppressed, and an evolving low to its southeast is forced inland across southern California into the Southwest.
Latest medium range guidance continues to indicate that it is possible that a short wave perturbation could emerge from the remnant low/troughing, in advance of another significant short wave impulse emerging from the higher latitudes before amplifying southeastward to the lee of the Rockies, through the Atlantic Seaboard by the end of the period. However, it now appears probable that modest troughing, perhaps with a continuing cyclonic circulation, will linger near and south of the Southwestern international border.
In lower levels, southerly moist return flow may commence by early next week across the southern into central Great Plains as surface troughing deepens to the lee of the Rockies. This may begin to more substantively advect northeastward toward the Ohio Valley, in advance of a southward advancing cold front associated with the digging mid-level troughing. However, there is notable spread among the model output concerning potential surface cyclogenesis, near and northeast of the Rockies.
Widely scattered strong to severe thunderstorm development appears possible from parts of the central and southern Great Plains into the Mississippi Valley by Tuesday, if not Monday. However, inhibition associated with warm elevated mixed-layer air overspreading the southern Great Plains may become a limiting factor, as low-level moisture becomes more supportive of strong destabilization.
There remains at least some signal in the model output for potentially more widespread strong to severe thunderstorm development across the lower/middle Mississippi Valley into Ohio Valley by next Wednesday, perhaps into Thursday. However, with uncertainties remaining sizable at this extended time frame, severe probabilities still appear less than 15 percent.
..Kerr.. 04/30/2026
CLICK TO GET WUUS48 PTSD48 PRODUCT
You are looking at an outlook that is part of the medium range forecast (the outlook for days 4-8). The most important thing to note is that lack of a risk does not mean zero risk. Generally speaking, confidence has to be pretty high for the Storm Prediction Center to have an outlook area this far into the future.
When no specific risk areas are shown, you might see one of these phrases:
If you bookmark this page, it will continue to update with each new outlook that is issued.
| Day 4 | Sunday, May 3 | potential too low |
| Day 5 | Monday, May 4 | potential too low |
| Day 6 | Tuesday, May 5 | predictability too low |
| Day 7 | Wednesday, May 6 | predictability too low |
| Day 8 | Thursday, May 7 | predictability too low |
← back to overviewZCZC SPCSWOD48 ALL ACUS48 KWNS 300900 SPC AC 300900
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0400 AM CDT Thu Apr 30 2026
Valid 031200Z - 081200Z
DISCUSSION
Late this coming weekend into early next week, it still appears that at least a transient blocking high may continue to evolve offshore of the British Columbia/Pacific Northwest coast. It remains a bit uncertain how long this will persist before becoming suppressed, and an evolving low to its southeast is forced inland across southern California into the Southwest.
Latest medium range guidance continues to indicate that it is possible that a short wave perturbation could emerge from the remnant low/troughing, in advance of another significant short wave impulse emerging from the higher latitudes before amplifying southeastward to the lee of the Rockies, through the Atlantic Seaboard by the end of the period. However, it now appears probable that modest troughing, perhaps with a continuing cyclonic circulation, will linger near and south of the Southwestern international border.
In lower levels, southerly moist return flow may commence by early next week across the southern into central Great Plains as surface troughing deepens to the lee of the Rockies. This may begin to more substantively advect northeastward toward the Ohio Valley, in advance of a southward advancing cold front associated with the digging mid-level troughing. However, there is notable spread among the model output concerning potential surface cyclogenesis, near and northeast of the Rockies.
Widely scattered strong to severe thunderstorm development appears possible from parts of the central and southern Great Plains into the Mississippi Valley by Tuesday, if not Monday. However, inhibition associated with warm elevated mixed-layer air overspreading the southern Great Plains may become a limiting factor, as low-level moisture becomes more supportive of strong destabilization.
There remains at least some signal in the model output for potentially more widespread strong to severe thunderstorm development across the lower/middle Mississippi Valley into Ohio Valley by next Wednesday, perhaps into Thursday. However, with uncertainties remaining sizable at this extended time frame, severe probabilities still appear less than 15 percent.
..Kerr.. 04/30/2026
CLICK TO GET WUUS48 PTSD48 PRODUCT
You are looking at an outlook that is part of the medium range forecast (the outlook for days 4-8). The most important thing to note is that lack of a risk does not mean zero risk. Generally speaking, confidence has to be pretty high for the Storm Prediction Center to have an outlook area this far into the future.
When no specific risk areas are shown, you might see one of these phrases:
If you bookmark this page, it will continue to update with each new outlook that is issued.
| Day 4 | Sunday, May 3 | potential too low |
| Day 5 | Monday, May 4 | potential too low |
| Day 6 | Tuesday, May 5 | predictability too low |
| Day 7 | Wednesday, May 6 | predictability too low |
| Day 8 | Thursday, May 7 | predictability too low |
← back to overviewZCZC SPCSWOD48 ALL ACUS48 KWNS 300900 SPC AC 300900
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0400 AM CDT Thu Apr 30 2026
Valid 031200Z - 081200Z
DISCUSSION
Late this coming weekend into early next week, it still appears that at least a transient blocking high may continue to evolve offshore of the British Columbia/Pacific Northwest coast. It remains a bit uncertain how long this will persist before becoming suppressed, and an evolving low to its southeast is forced inland across southern California into the Southwest.
Latest medium range guidance continues to indicate that it is possible that a short wave perturbation could emerge from the remnant low/troughing, in advance of another significant short wave impulse emerging from the higher latitudes before amplifying southeastward to the lee of the Rockies, through the Atlantic Seaboard by the end of the period. However, it now appears probable that modest troughing, perhaps with a continuing cyclonic circulation, will linger near and south of the Southwestern international border.
In lower levels, southerly moist return flow may commence by early next week across the southern into central Great Plains as surface troughing deepens to the lee of the Rockies. This may begin to more substantively advect northeastward toward the Ohio Valley, in advance of a southward advancing cold front associated with the digging mid-level troughing. However, there is notable spread among the model output concerning potential surface cyclogenesis, near and northeast of the Rockies.
Widely scattered strong to severe thunderstorm development appears possible from parts of the central and southern Great Plains into the Mississippi Valley by Tuesday, if not Monday. However, inhibition associated with warm elevated mixed-layer air overspreading the southern Great Plains may become a limiting factor, as low-level moisture becomes more supportive of strong destabilization.
There remains at least some signal in the model output for potentially more widespread strong to severe thunderstorm development across the lower/middle Mississippi Valley into Ohio Valley by next Wednesday, perhaps into Thursday. However, with uncertainties remaining sizable at this extended time frame, severe probabilities still appear less than 15 percent.
..Kerr.. 04/30/2026
CLICK TO GET WUUS48 PTSD48 PRODUCT
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