May 12, 2014 0100 UTC Day 1 Convective Outlook
Updated: Mon May 12 00:36:40 UTC 2014 (20140512 0100Z Day 1 shapefile | 20140512 0100Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Public Severe Weather Outlook

The SPC is forecasting ...Severe thunderstorms expected over parts of the central Plains into mid Missouri Valley this afternoon and tonight....   Please read the latest public statement about this event.  View What is a Watch? clip.

Categorical Graphic
20140512 0100 UTC Day 1 Outlook Graphic
Probabilistic Tornado Graphic
20140512 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.
Probabilistic Damaging Wind Graphic
20140512 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.
Probabilistic Large Hail Graphic
20140512 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.
Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
MODERATE 43,846 2,634,399 Omaha, NE...Lincoln, NE...Des Moines, IA...Salina, KS...Ft. Dodge, IA...
SLIGHT 223,275 27,139,558 Chicago, IL...Indianapolis, IN...Milwaukee, WI...Kansas City, MO...Wichita, KS...
   SPC AC 120033

   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0733 PM CDT SUN MAY 11 2014

   VALID 120100Z - 121200Z

   ...THERE IS A MDT RISK OF SVR TSTMS ACROSS PARTS OF KS...SERN
   NEB...AND WRN/CNTRL IA...

   ...THERE IS A SLGT RISK OF SVR TSTMS FROM THE SOUTHERN PLAINS INTO
   THE MIDWEST STATES...

   ...SUMMARY...
   NUMEROUS SEVERE STORMS WILL CONTINUE TO AFFECT PARTS OF CENTRAL
   KANSAS INTO SOUTHEAST NEBRASKA...NORTHEASTWARD THROUGH EASTERN
   NEBRASKA INTO CENTRAL IOWA.  VERY LARGE HAIL...DAMAGING WINDS...AND
   TORNADOES WILL REMAIN POSSIBLE IN THIS AREA.  OTHERWISE...ISOLATED
   SEVERE STORMS WILL AFFECT AREAS FROM ILLINOIS INTO OHIO...AND OVER
   PARTS OF THE SOUTHERN PLAINS.

   ...KS/NEB/IA...
   INTENSE SEVERE/SUPERCELL STORMS CONTINUE ALONG A CORRIDOR FROM
   CENTRAL KS INTO CENTRAL IA.  THESE STORMS HAVE PRODUCED NUMEROUS
   REPORTS OF LARGE HAIL /SOME VERY LARGE/.  SEVERAL TORNADOES HAVE
   ALSO OCCURRED WITH STORMS MOVING ACROSS SOUTHEAST NEB INTO WESTERN
   IA.  THESE THREATS WILL SLOWLY DIMINISH THIS EVENING...BUT HAVE
   OPTED TO MAINTAIN THE MODERATE RISK FOR A FEW MORE HOURS.  STORMS
   OVER NEB MAY HAVE AN INCREASING POTENTIAL FOR DAMAGING WINDS AS THEY
   ORGANIZE UPSCALE AND SPREAD INTO IA.

   ...OK/TX...
   FARTHER SOUTH...MODELS CONTINUE TO SHOW POTENTIAL FOR THUNDERSTORM
   DEVELOPMENT OVERNIGHT ACROSS WESTERN OK AND PARTS OF WEST TX AS THE
   SURFACE COLD FRONT SAGS INTO THIS AREA.  THESE STORMS MAY POSE A
   RISK OF HAIL AND DAMAGING WINDS.

   ...IL/IND/OH...
   SCATTERED STRONG TO SEVERE STORMS PERSIST ACROSS PARTS OF NORTHERN
   IL...NORTHERN/CENTRAL IND...AND CENTRAL OH.  THIS ACTIVITY MAY
   PERSIST FOR ANOTHER HOUR OR TWO BEFORE NOCTURNAL COOLING WEAKENS THE
   STORMS.

   ..HART.. 05/12/2014

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