Oklahoma City, OK...Abilene, TX...Clarksville, TN...Norman, OK...Wichita Falls, TX...
Probabilistic Damaging Wind Graphic
Probability of damaging thunderstorm winds or wind gusts of 50 knots or higher within 25 miles of a point. Hatched Area: 10% of greater probability of wind gusts 65 knots or greater within 25 miles of a point.
Day 1 Wind Risk
Area (sq. mi.)
Area Pop.
Some Larger Population Centers in Risk Area
SIG SEVERE
19,198
2,383,354
San Antonio, TX...San Marcos, TX...New Braunfels, TX...Schertz, TX...Seguin, TX...
30 %
9,761
1,845,610
San Antonio, TX...Kerrville, TX...Uvalde, TX...Leon Valley, TX...Kirby, TX...
15 %
175,274
16,632,727
Dallas, TX...Austin, TX...Fort Worth, TX...Oklahoma City, OK...Tulsa, OK...
SPC AC 290059
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0759 PM CDT Wed Apr 28 2021
Valid 290100Z - 291200Z
...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS
OF THE EDWARDS PLATEAU/HILL COUNTRY/RIO GRANDE VALLEY OF TEXAS...
...SUMMARY...
Severe-weather risk will continue this evening and into the
overnight hours from the southern Plains across the Ohio Valley
area, with the most widespread risk expected from parts of southern
and central Texas northeastward to southeastern Oklahoma.
...Discussion...
Widespread convection and scattered thunderstorms are ongoing at
this time from the southern Rockies/southern Plains to New England.
Within this area, thunderstorms continue from Texas and Oklahoma
northeastward across the Ohio Valley/central Appalachians area, with
embedded strong storms across the Ohio Valley portion of the area
and severe storms ongoing across portions of the southern Plains.
The convection is occurring along a sprawling surface baroclinic
zone, and in advance of phased northern- and southern-stream
troughing extending from the northern Plains to northwestern Mexico,
including an upper low center now over southwestern New Mexico.
Diurnal cooling is resulting in gradual stabilization of the airmass
near the aforementioned surface front, from the Ohio Valley into New
England. However, abundant low-level moisture and steep lapse rates
across the southern Plains portion of the area will permit
persistent overnight convective activity/redevelopment -- and
continuation of an all-hazards severe risk locally. The strongest
convection at this time is ongoing west of San Antonio, as storm
development continues ahead of the slowly advancing cold front, and
over the higher terrain just west of the Rio Grande. For specifics
regarding short-term severe-weather risk -- particularly across the
San Antonio area, please refer to SWOMCD 459.
..Goss.. 04/29/2021
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z
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