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Mesoscale Discussion 1303 |
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MESOSCALE DISCUSSION 1303
NWS STORM PREDICTION CENTER NORMAN OK
1053 PM CDT SAT JUL 16 2016
AREAS AFFECTED...NORTH-CENTRAL/NORTHEAST SD...FAR SOUTHEAST ND
CONCERNING...SEVERE THUNDERSTORM WATCH 392...
VALID 170353Z - 170500Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 392
CONTINUES.
SUMMARY...STORM CLUSTER OVER NORTH-CENTRAL SD WITH A HISTORY OF
SEVERAL SEVERE WIND GUSTS SHOULD BEGIN TO WEAKEN AS IT MOVES EAST
INTO A LESS UNSTABLE AIR MASS.
DISCUSSION...STORM CLUSTER THAT HAS PRODUCED SEVERAL SEVERE WIND
GUSTS OVER NORTH-CENTRAL SD WILL BE PROGRESSING EAST OF AN OCCLUDING
WARM SECTOR DURING THE NEXT COUPLE OF HOURS. LOW-LEVEL AIR MASS
ACROSS NORTHEAST SD TOWARDS THE UPPER RED RIVER VALLEY HAS LIKELY
BEEN STABILIZED BY AN ONGOING MCS THAT IS SHIFTING SOUTH/SOUTHEAST
ACROSS EAST-CENTRAL SD AND SOUTHWEST MN. WHILE FORWARD MOMENTUM WILL
PROBABLY SUPPORT SOME RISK FOR SEVERE WIND GUSTS THROUGH ABOUT
06Z...WEAKNESSES IN THE MID-LEVEL HODOGRAPH EVIDENT IN ABR VWP DATA
ALONG WITH THE LESS FAVORABLE THERMODYNAMIC ENVIRONMENT SUGGEST THIS
RISK SHOULD BE IN A DECREASING STATE.
..GRAMS.. 07/17/2016
ATTN...WFO...FGF...ABR...BIS...
LAT...LON 46069980 46189854 46319688 46069659 45619655 45249657
45129702 44999773 44949871 44959929 46069980
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