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Mesoscale Discussion 1791 |
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MESOSCALE DISCUSSION 1791
NWS STORM PREDICTION CENTER NORMAN OK
1014 PM CDT FRI JUL 29 2011
AREAS AFFECTED...FAR NERN MT...WRN AND CNTRL ND
CONCERNING...SEVERE THUNDERSTORM WATCH 702...
VALID 300314Z - 300415Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 702
CONTINUES.
PRIMARY THREAT ACROSS WW 702 REMAINS CONFINED TO A RIGHT-MOVING
SUPERCELL NOW ENTERING WRN ND...WHICH IS STILL EXHIBITING A STRONG
REFLECTIVITY CORE WITH A LIKELY ACCOMPANYING THREATS OF DMGG
WINDS/LARGE HAIL AND POSSIBLY A TORNADO. UNPERTURBED MOIST S-SELY
LOW-LEVEL INFLOW /SAMPLED NEAR 20 KTS PER KBIS VAD DATA/ WILL
PERSIST AND SHOULD AID IN MAINTAINING INTENSITY IN THE SHORT-TERM
DESPITE INCREASING CINH. INSTABILITY ACROSS CNTRL ND REMAINS QUITE
LIMITED WITH NWD EXTENT /PER 02Z RUC OBJECTIVE ANALYSIS/. EVENTUAL
EVOLUTION IS STILL SOMEWHAT UNCERTAIN...ESPECIALLY IN REGARDS TO
POTENTIAL FOR UPSCALE GROWTH OF WRN ND SUPERCELL AND ADJACENT
CLUSTER OF TSTMS OVER NWRN ND. HOWEVER...EVENTUAL VEERING OF
LOW-LEVEL FLOW WITH COULD FAVOR COLD POOL CONSOLIDATION AND
DEVELOPMENT OF AN ORGANIZED CLUSTER. CONVECTIVE TRENDS WILL CONTINUE
TO BE MONITORED FOR POSSIBLE NEW WW ISSUANCE DOWNSTREAM FROM WW 702.
..ROGERS.. 07/30/2011
ATTN...WFO...BIS...BYZ...GGW...
LAT...LON 46570336 46510454 47260519 48920398 48930064 46760019
46490083 46570336
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