Severe Storm Outlook Narrative (AC)
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
559
ACUS11 KWNS 252326
SWOMCD
SPC MCD 252325
WIZ000-MNZ000-SDZ000-NEZ000-260100-

Mesoscale Discussion 1422
NWS Storm Prediction Center Norman OK
0625 PM CDT Tue Jul 25 2017

Areas affected...Northern Nebraska across southeast South Dakota
into Minnesota

Concerning...Severe Thunderstorm Watch 436...437...

Valid 252325Z - 260100Z

The severe weather threat for Severe Thunderstorm Watch 436, 437
continues.

SUMMARY...The threat of locally damaging winds or hail persists
across a wide area from north central Nebraska into southern
Minnesota.

DISCUSSION...Scattered storms continue to evolve within the surface
trough where strong heating occurred this afternoon. Hail cores have
been noted on many of the cells, with a few left-moving storms
evident. Strong outflow has been measured, and radar shows areal
extent of outflow boundaries increasing with time. This is likely to
have a stabilizing effect by early evening, when coverage of severe
storms is expected to wane. However, strong instability currently
exists over a large area, and isolated severe storms remain possible
both north and south of the ongoing convective axis until the air
mass is overturned.

..Jewell.. 07/25/2017

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...MPX...FSD...ABR...LBF...UNR...

LAT...LON   43979553 43439737 42419936 41810119 41940216 42400246
            43470133 44769860 45389699 45719467 45729333 45369281
            44809265 44349315 43979553




USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.