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Mesoscale Discussion 2094 |
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MESOSCALE DISCUSSION 2094
NWS STORM PREDICTION CENTER NORMAN OK
1045 AM CDT FRI OCT 09 2009
AREAS AFFECTED...SE AR INTO NW MS
CONCERNING...TORNADO WATCH 762...
VALID 091545Z - 091715Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 762 CONTINUES.
ALONG A FRONTAL OR PRE-FRONTAL SQUALL LINE ADVANCING INTO/THROUGH
THE LOWER MISSISSIPPI VALLEY...A SURFACE LOW/WAVE APPEARS TO BE THE
FOCUS FOR STRONGEST STORM ACTIVITY. THIS FEATURE IS NOW EAST OF EL
DORADO...AND TRACKING EAST NORTHEASTWARD TOWARD GREENVILLE MS. ITS
LONGEVITY AT CURRENT STRENGTH IS A BIT UNCERTAIN...AS IT APPEARS
AREA OF ASSOCIATED MID/UPPER FORCING IS CURRENTLY LIFTING ACROSS
NORTHERN ARKANSAS INTO SOUTHERN MISSOURI. HOWEVER...MODEST INFLOW
OF VERY MOIST AIR CHARACTERIZED BY CAPE OF 1000+ J/KG...IN THE
PRESENCE OF STRONG DEEP LAYER SOUTH SOUTHWESTERLY MEAN FLOW...WITH
40-50+ KT IN THE LOWEST 1-2 KM AGL...SUGGESTS A CONTINUING RISK FOR
DAMAGING WIND GUSTS ACROSS SOUTHEAST ARKANSAS INTO NORTHWEST
MISSISSIPPI AT LEAST THROUGH 17-18Z. RISK FOR TORNADOES CONTINUES
...MAINLY IF ANY ISOLATED STORMS ARE ABLE TO FORM OUT AHEAD OF THE
ONGOING CONVECTIVE LINE.
..KERR.. 10/09/2009
ATTN...WFO...MEG...JAN...LZK...
LAT...LON 33949135 34389085 34869031 34858984 34308982 33349041
32839103 32529161 33049171 33949135
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