May 28, 2020 0100 UTC Day 1 Convective Outlook
Updated: Thu May 28 01:00:21 UTC 2020 (20200528 0100Z Day 1 shapefile | 20200528 0100Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20200528 0100 UTC Day 1 Outlook Graphic
Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
ENHANCED 15,386 2,932,936 San Antonio, TX...San Marcos, TX...New Braunfels, TX...Schertz, TX...Seguin, TX...
SLIGHT 25,751 7,454,428 Houston, TX...Austin, TX...Pasadena, TX...Round Rock, TX...College Station, TX...
MARGINAL 26,949 1,137,817 Beaumont, TX...Killeen, TX...Bryan, TX...Port Arthur, TX...Temple, TX...
Probabilistic Tornado Graphic
20200528 0100 UTC Day 1 Tornado Probabilities Graphic
Probability of a tornado within 25 miles of a point.
Hatched Area: 10% or greater probability of EF2 - EF5 tornadoes within 25 miles of a point.
Day 1 Tornado Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
5 % 13,820 3,040,014 San Antonio, TX...Austin, TX...San Marcos, TX...New Braunfels, TX...Schertz, TX...
2 % 29,749 7,304,210 Houston, TX...Pasadena, TX...Round Rock, TX...Sugar Land, TX...The Woodlands, TX...
Probabilistic Damaging Wind Graphic
20200528 0100 UTC Day 1 Damaging Wind Probabilities 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 15,704 2,978,911 San Antonio, TX...Victoria, TX...San Marcos, TX...New Braunfels, TX...Schertz, TX...
30 % 16,682 3,013,636 San Antonio, TX...Victoria, TX...San Marcos, TX...New Braunfels, TX...Schertz, TX...
15 % 24,811 7,334,330 Houston, TX...Austin, TX...Pasadena, TX...Round Rock, TX...Sugar Land, TX...
5 % 28,948 1,207,191 Beaumont, TX...Killeen, TX...College Station, TX...Bryan, TX...Port Arthur, TX...
Probabilistic Large Hail Graphic
20200528 0100 UTC Day 1 Large Hail Probabilities Graphic
Probability of hail 1" or larger within 25 miles of a point.
Hatched Area: 10% or greater probability of hail 2" or larger within 25 miles of a point.
Day 1 Hail Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
SIG SEVERE 15,513 2,941,780 San Antonio, TX...San Marcos, TX...New Braunfels, TX...Schertz, TX...Seguin, TX...
30 % 14,891 2,907,894 San Antonio, TX...San Marcos, TX...New Braunfels, TX...Schertz, TX...Seguin, TX...
15 % 25,464 7,473,793 Houston, TX...Austin, TX...Pasadena, TX...Round Rock, TX...College Station, TX...
5 % 29,528 1,197,679 Beaumont, TX...Killeen, TX...Bryan, TX...Port Arthur, TX...Temple, TX...
   SPC AC 280100

   Day 1 Convective Outlook CORR 1
   NWS Storm Prediction Center Norman OK
   0800 PM CDT Wed May 27 2020

   Valid 280100Z - 281200Z

   ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
   SOUTH-CENTRAL TEXAS...

   CORRECTED TO REMOVE TORNADO PROBABILITIES IN THE CAROLINAS.

   ...SUMMARY...
   Severe thunderstorm risk continues over south-central Texas this
   evening. Very large hail, severe wind, and a tornado or two remains
   possible.

   ...01z Update...

   Organized thunderstorm clusters are progressing southeast across
   south-central TX at roughly 25kt. This activity has evolved within a
   modestly sheared northwesterly flow regime on the back side of the
   lower MS Valley upper trough. A reservoir of strong buoyancy
   currently extends across south-central TX ahead of this convection
   and there is reason to believe southeast progression will result in
   this activity moving off the middle TX Coast later this evening. 00z
   sounding from CRP supports this possibility with steep lapse rates
   and adequate flow for the maintenance of ongoing updrafts. Large
   hail continues to be noted with the strongest updrafts, especially
   across ww232. In addition to damaging wind threat, a tornado can not
   be ruled out with the strongest supercell structures.

   ..Darrow.. 05/28/2020

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   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z