377
AWUS01 KWNH 232000
FFGMPD
MOZ000-IAZ000-KSZ000-NEZ000-240100-
MESOSCALE PRECIPITATION DISCUSSION 0126
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
359 PM EDT THU APR 23 2026
AREAS AFFECTED...NORTHEASTERN KS, SOUTHEASTERN NE, SOUTHWESTERN
IA, NORTHWESTERN MO
CONCERNING...HEAVY RAINFALL...FLASH FLOODING POSSIBLE
VALID 231956Z - 240100Z
SUMMARY...ISOLATED INSTANCES OF FLASH FLOODING WILL BE POSSIBLE
FROM NORTHEASTERN KS INTO SOUTHEASTERN NE, WESTERN IA AND
NORTHWESTERN MO. TRAINING OF THUNDERSTORMS WILL PRODUCE HOURLY
RAINFALL OF 1-2 IN/HR WITH PEAK RAINFALL TOTALS OF 2-4 INCHES
POSSIBLE, THROUGH 01Z.
DISCUSSION...1945Z RADAR IMAGERY SHOWED A BROKEN LINE OF
THUNDERSTORMS EXTENDING FROM SOUTH-CENTRAL MN DOWN TO THE NE/KS
BORDER, JUST AHEAD OF A COLD FRONT. A CYCLONIC SWIRL WAS OBSERVED
ON VISIBLE IMAGERY OVER NORTHERN KS, RELATED TO A LOW TO MID-LEVEL
VORTICITY MAX LOCATED JUST NORTH OF THE SURFACE TRIPLE POINT.
STRONG TO SEVERE THUNDERSTORMS WERE ONGOING IN THE VICINITY OF
OMAHA, NE WITH RAPID DEVELOPMENT NOTED SOUTH OF OMAHA TO THE NE/KS
BORDER. SPC MESOANALYSIS DATA FROM 19Z SHOWED 2000-3000 J/KG
MLCAPE FROM WESTERN IA INTO EAST-CENTRAL KS AHEAD OF THE COLD
FRONT WITH LITTLE TO NO CIN PRESENT.
WHILE THUNDERSTORM ACTIVITY TO THE NORTH OVER WESTERN IA CONTINUES
TO GROW AND EXPAND DOWNSTREAM TOWARD CENTRAL IA THROUGH 00Z, NEWER
DEVELOPMENT TO THE SOUTH IS ALSO EXPECTED TO EXPAND WITHIN THE
UNSTABLE ENVIRONMENT AHEAD OF THE FRONT AND FAVORABLY
DIFFLUENT/DIVERGENT JET PATTERN ALOFT. A GENERAL EASTWARD
ADVANCEMENT OF THE LINE IS EXPECTED BUT AN INFLECTION OR TWO
WITHIN THE LINE OF STORMS IS ANTICIPATED, ALLOWING FOR THE
INCREASED POTENTIAL FOR BRIEF TRAINING FROM THE NE/IA BORDER DOWN
INTO NORTHEASTERN KS AS LINE ORIENTATION MATCHES THAT OF THE MEAN
STEERING FROM FROM THE SOUTHWEST. ELEMENTS OF TRAINING WILL BE
CAPABLE OF 1-2 IN/HR RATES AND THERE WILL BE ISOLATED POTENTIAL
FOR 2-4 INCHES THROUGH 01Z AS THE LINE OF THUNDERSTORMS ADVANCES
OFF TOWARD THE EAST.
OTTO
..PLEASE SEE WWW.WPC.NCEP.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...DMX...EAX...ICT...OAX...TOP...
ATTN...RFC...KRF...MSR...TUA...NWC...
LAT...LON 41949521 41839435 41249367 39789434 37989595
38109739 38699787 39899740 41119655
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