336 

AWUS01 KWNH 132331
FFGMPD
MNZ000-IAZ000-SDZ000-140330-

Mesoscale Precipitation Discussion 0101
NWS Weather Prediction Center College Park MD
730 PM EDT Mon Apr 13 2026

Areas affected...Southwest Minnesota and Northwest Iowa

Concerning...Heavy rainfall...Flash flooding possible

Valid 132330Z - 140330Z

SUMMARY... Clusters of storms are forming across portions of
southwest Minnesota and northwest Iowa this evening. Localized
rain rates to 2" per hour could cause isolated to widely scattered
instances of flash flooding.

DISCUSSION... Convective coverage has rapidly increased across
portions of southwest Minnesota and northwest Iowa this evening as
part of a broader low pressure center and warm frontal system,
tapping into Gulf moisture riding up to the south and east of
these features. Rainfall rates of up to 2 inches per hour have
been observed on radar, with somewhat moistened soils in the area
from recent rainfall, based on NASA SPoRT imagery.

CAMs guidance is in poor agreement in this area, with none of the
guidance suggesting convective coverage would be as robust in this
area than has already formed. For those that have a hint of the
southern extent of this convection (NAMnest, ARW to a lesser
extent, and HRRR to an even lesser extent), all suggest much
faster and more eastward motions to these storms than have already
been occurring. Thus, with slower and more northward storm
motions, towards areas where storms have already formed across far
southern Minnesota, expect more robust training and heavier
rainfall rates than the guidance is suggesting, favoring more
potential for flash flooding over the next few hours.

Wegman

...Please see www.wpc.ncep.noaa.gov for graphic product...

ATTN...WFO...ARX...DMX...FSD...MPX...

ATTN...RFC...KRF...MSR...NWC...

LAT...LON   45369378 44999377 44649360 44179331 43929301
            43769257 43649215 43449216 43129229 42679296
            42619447 42549518 42579577 42809622 43209651
            43539693 44139664 44909551 45309470 45349421