SWOMCD
SPC MCD 220721
KSZ000-OKZ000-TXZ000-COZ000-220845-
MESOSCALE DISCUSSION 0334
NWS STORM PREDICTION CENTER NORMAN OK
0221 AM CDT THU APR 22 2010
AREAS AFFECTED...TX/OK PNHDL...SE CO...SRN KS...PARTS OF EXTREME
WRN/NRN OK
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 220721Z - 220845Z
A WW IS NOT CURRENTLY ANTICIPATED...BUT TRENDS WILL CONTINUE TO BE
MONITORED FOR THE POSSIBILITY OF AN INCREASING SEVERE THREAT.
RECENT INTENSIFICATION OF CONVECTIVE ACTIVITY ACROSS THE SOUTH
CENTRAL HIGH PLAINS INTO THE CENTRAL PLAINS APPEARS TO LARGELY
CORRESPOND WITH NOCTURNAL SOUTHERLY LOW-LEVEL JET INTENSIFICATION
/45-50 KT AT 850 MB/ ACROSS THE HIGH PLAINS. THIS FEATURE IS LIKELY
REACHING ITS PEAK INTENSITY NOW...WITH A GRADUAL WEAKENING
ANTICIPATED THROUGH THE 09-12Z TIME FRAME. UNTIL THIS OCCURS...
ONGOING STORMS MAY MAINTAIN THEIR CURRENT VIGOR.
INCREASING STORM COVERAGE APPEARS LIKELY WITHIN DEVELOPING EAST-WEST
BAND OF WARM ADVECTION EXTENDING ACROSS EASTERN COLORADO THROUGH
SOUTHERN KANSAS...WHERE INSTABILITY MAY BE SUPPORTIVE OF OCCASIONAL
MOSTLY MARGINALLY SEVERE HAIL.
MEANWHILE...STRONG GUSTY WINDS APPEAR THE PRIMARY HAZARD WITH
ONGOING STORM CLUSTER WEST/NORTHWEST OF LUBBOCK AND PLAINVIEW.
SUB-CLOUD TEMPERATURE/DEW POINT SPREADS...ABOVE SHALLOW COOL/MOIST
SURFACE LAYER...APPEAR LARGE ENOUGH TO ENHANCE EVAPORATIVE COOLING
AND DOWNWARD TRANSPORT OF MOMENTUM ASSOCIATED WITH THE LOW-LEVEL
JET...AT LEAST THROUGH THE NORTHERN/EASTERN PANHANDLE
REGION...BEFORE ACTIVITY WEAKENS TOWARD DAYBREAK.
..KERR.. 04/22/2010
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...TSA...ICT...OUN...DDC...GLD...LUB...AMA...PUB...
LAT...LON 34750262 35660261 36380259 37080287 37810307 38770238
39040065 38919942 38659805 37679567 37249584 36819614
36799785 36869872 36649946 35379965 34789980 33790058
33600160 34240230 34750262
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