May 2, 2022 1630 UTC Day 1 Convective Outlook
Updated: Mon May 2 16:26:04 UTC 2022 (20220502 1630Z Day 1 shapefile | 20220502 1630Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20220502 1630 UTC Day 1 Outlook Graphic
Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
MODERATE 15,896 1,410,379 Tulsa, OK...Broken Arrow, OK...Enid, OK...Stillwater, OK...Muskogee, OK...
ENHANCED 42,394 3,535,176 Oklahoma City, OK...Wichita, KS...Norman, OK...Fort Smith, AR...Edmond, OK...
SLIGHT 87,906 3,238,738 Little Rock, AR...Springfield, MO...Lawton, OK...North Little Rock, AR...Conway, AR...
MARGINAL 236,153 22,498,964 Dallas, TX...Austin, TX...Memphis, TN...Fort Worth, TX...Kansas City, MO...
Probabilistic Tornado Graphic
20220502 1630 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
SIG SEVERE 28,898 2,665,048 Oklahoma City, OK...Tulsa, OK...Norman, OK...Broken Arrow, OK...Edmond, OK...
15 % 6,027 206,219 Enid, OK...Stillwater, OK...Ponca City, OK...Arkansas City, KS...
10 % 39,841 3,884,370 Oklahoma City, OK...Tulsa, OK...Wichita, KS...Norman, OK...Broken Arrow, OK...
5 % 42,614 1,919,460 Springfield, MO...Lawton, OK...Fort Smith, AR...Fayetteville, AR...Joplin, MO...
2 % 100,451 4,882,996 Memphis, TN...Little Rock, AR...Abilene, TX...Wichita Falls, TX...North Little Rock, AR...
Probabilistic Damaging Wind Graphic
20220502 1630 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 29,260 2,782,932 Oklahoma City, OK...Tulsa, OK...Broken Arrow, OK...Edmond, OK...Fayetteville, AR...
45 % 12,010 1,275,941 Tulsa, OK...Broken Arrow, OK...Stillwater, OK...Muskogee, OK...Bartlesville, OK...
30 % 29,519 2,891,195 Oklahoma City, OK...Norman, OK...Fort Smith, AR...Edmond, OK...Fayetteville, AR...
15 % 76,937 3,526,184 Wichita, KS...Little Rock, AR...Springfield, MO...Lawton, OK...North Little Rock, AR...
5 % 230,653 18,890,122 Dallas, TX...Austin, TX...Memphis, TN...Fort Worth, TX...Arlington, TX...
Probabilistic Large Hail Graphic
20220502 1630 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 44,097 3,654,539 Oklahoma City, OK...Tulsa, OK...Wichita, KS...Norman, OK...Lawton, OK...
30 % 35,877 3,202,859 Oklahoma City, OK...Tulsa, OK...Wichita, KS...Norman, OK...Broken Arrow, OK...
15 % 88,365 3,702,225 Springfield, MO...Lawton, OK...Fort Smith, AR...Fayetteville, AR...Springdale, AR...
5 % 257,676 23,558,913 Dallas, TX...Austin, TX...Memphis, TN...Fort Worth, TX...Kansas City, MO...
   SPC AC 021626

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1126 AM CDT Mon May 02 2022

   Valid 021630Z - 031200Z

   ...THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON
   AND EARLY EVENING OVER FAR SOUTHERN KANSAS AND NORTHERN OKLAHOMA...

   ...SUMMARY...
   Intense severe thunderstorms are expected across portions of
   northern Oklahoma and far southern Kansas, mainly between about 3 to
   11 PM CDT. Tornadoes are likely, a few of which could be strong,
   along with widespread damaging winds and very large hail.

   ...KS/OK...
   Morning water vapor imagery shows a fast-moving compact upper trough
   moving across the Rockies, with an associated 60+ knot mid-level
   speed max tracking quickly into KS/OK.  At the nose of this jet, a
   rather deep surface low is over southwest KS.  Strong southerly low
   level winds are present in the warm sector of the low, but moisture
   return is complicated by multiple clusters of remnant convection and
   outflow boundaries.  Rich moisture has returned to southern OK to
   the south of the outflow boundaries, and is still expected to make a
   rapid northward return this afternoon.

   Present indications are that multiple convective scenarios will play
   out in close areal/temporal proximity today over northwest OK. 
   Initial storms may be along the bent-back portion of the low-level
   moisture plume over southwest KS.  These storms will be in a very
   favorable low-level shear environment for supercell structures and
   possibly tornadoes, but early initiation (around 18z) may be before
   sufficient low-level destabilization can fully occur.  Nevertheless,
   a few severe storms are expected in this regime that track
   east-northeastward into south-central KS this afternoon and evening.

   Just to the south and east of this setup, intense discrete
   supercells are expected to form by mid-afternoon along the dryline
   near or just south of the triple-point along the KS/OK border. 
   These storms will have the greatest risk of significant tornadoes
   and very large hail, assuming they can persist ahead of the
   approaching cold front. This threat area is depicted in the 15%
   tornado risk area. Several CAM solutions suggest that convection
   will attempt to form farther south along the dryline this afternoon,
   but few are able to sustain this activity.  While this risk of
   thunderstorm development is lower than farther north, it is non-zero
   and any storm that can mature would pose similar risks of
   significant severe weather including tornadoes.

   A strong cold front will surge into central OK by late afternoon,
   undercutting existing storms and becoming a focus for the
   development of a squall line.  These storms will also pose a risk of
   rather widespread damaging wind gusts, very large hail, and a few
   tornadoes through the evening.  Storms may persist well into the
   night into the Red River valley.

   ..Hart/Weinman.. 05/02/2022

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