Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 212342
SWOMCD
SPC MCD 212342
MNZ000-SDZ000-NDZ000-220115-

MESOSCALE DISCUSSION 1422
NWS STORM PREDICTION CENTER NORMAN OK
0642 PM CDT MON JUL 21 2014

AREAS AFFECTED...PARTS OF CENTRAL AND ERN ND...ADJACENT NORTH
CENTRAL-NERN SD...AND EXTREME NWRN MN

CONCERNING...SEVERE THUNDERSTORM WATCH 427...

VALID 212342Z - 220115Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 427
CONTINUES.

SUMMARY...THE THREAT FOR DAMAGING WINDS WILL SPREAD EWD FROM CENTRAL
INTO ERN ND AND ADJACENT SD EARLY THIS EVENING...WITH THE POTENTIAL
FOR GUSTS TO REACH AND/OR EXCEED 55-65 KT...ESPECIALLY OVER SERN TO
EAST CENTRAL ND.  HAIL WILL REMAIN A THREAT WITH POTENTIAL FOR A
BRIEF TORNADO.

DISCUSSION...TRENDS IN RADAR IMAGERY AT BIS INDICATED AN
ACCELERATION OF A LINE OF STORMS AS THIS ACTIVITY MOVED EAST OF THE
MISSOURI RIVER THROUGH BURLEIGH AND EMMONS COUNTIES ND.  AT
2320Z...THIS LINE OF STORMS EXTENDED THROUGH THE COUNTIES OF SERN
EMMONS TO WRN LOGAN...KIDDER TO SHERIDAN...WITH PORTIONS OF THE LINE
MOVING ENEWD AT 40-45 KT.  ADDITIONAL STORMS CONTINUED OVER NERN
ND...GENERALLY NORTH OF A BOUNDARY WHICH WAS BEGINNING TO MOVE SWD
AND EXTENDED FROM 60 WSW DVL TO 40 W GFK TO 20 N GFK.  THE
ENVIRONMENT ALONG AND SOUTH OF THIS BOUNDARY REMAINED EXTREMELY
UNSTABLE /MLCAPE 4000-5000 J PER KG/.  THIS INSTABILITY COMBINED
WITH THE FORWARD PROPAGATING LINE OF STORMS BEING ORIENTED
PERPENDICULAR TO THE FLOW ALOFT SUGGESTS THE GREATEST POTENTIAL FOR
SIGNIFICANT WIND GUSTS SHOULD OCCUR ACROSS SERN AND EAST-CENTRAL ND
THROUGH 01-02Z.

..PETERS.. 07/21/2014

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...FGF...ABR...BIS...

LAT...LON   46819993 47480043 48929891 48989690 47309672 46219661
            45869678 45709787 45680025 46819993




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