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Mesoscale Discussion 1212 |
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MESOSCALE DISCUSSION 1212
NWS STORM PREDICTION CENTER NORMAN OK
0722 PM CDT MON JUN 13 2011
AREAS AFFECTED...EASTERN ND/FAR NORTHWEST MN
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 140022Z - 140145Z
POTENTIAL EXISTS FOR A FEW STRONG/SEVERE TSTMS MAINLY THROUGH
EARLY/MID EVENING ACROSS EASTERN ND/FAR NORTHWEST MN.
VISIBLE SATELLITE/RADAR IMAGERY REFLECT AN INCREASE OVER THE PAST
HOUR OR SO IN CONVECTION ACROSS FAR EASTERN ND...PRIMARILY IN
VICINITY OF A WEAK SURFACE TROUGH /AUGMENTED BY OTHER BOUNDARY
MERGERS/ AND COINCIDENT MOIST/INSTABILITY AXIS THAT EXTENDS NNE-SSW
ACROSS EASTERN ND. THIS ACTIVITY IS ALSO ATTRIBUTABLE TO THE
GLANCING INFLUENCE OF A NORTHEAST-MOVING SHORTWAVE TROUGH OVER
SASKATCHEWAN/MANITOBA. ANY SEVERE THREAT IS EXPECTED TO REMAIN
RELATIVELY ISOLATED AND TEMPORALLY CONFINED TO THE EARLY/MID EVENING
HOURS...BUT BOUTS OF SEVERE HAIL/GUSTY WINDS VIA SOME SUSTAINED
SUPERCELLS/MULTICELLS MAY BE POSSIBLE GIVEN MODERATE INSTABILITY OF
1000-1500 J/KG MLCAPE AND VEERING WIND PROFILES AS NOTED PER THE
GRAND FORKS WSR-88D VWP. FURTHERMORE...SOME TEMPORAL WINDOW FOR A
BRIEF TORNADO MAY EVEN EXIST /MAINLY THROUGH SUNSET/ GIVEN AMPLE
MOISTURE/LOW LEVEL CAPE AND MODEST LOW LEVEL SRH IN VICINITY OF THE
SURFACE WIND SHIFT.
..GUYER.. 06/14/2011
ATTN...WFO...FGF...BIS...
LAT...LON 49079707 48679685 47399665 46389755 46439897 48809766
49079707
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