|
| Mesoscale Discussion 105 |
|
< Previous MD Next MD >
|
|
MESOSCALE DISCUSSION 0105
NWS STORM PREDICTION CENTER NORMAN OK
0656 PM CST WED JAN 30 2013
AREAS AFFECTED...FL PANHANDLE/EAST-SOUTHEAST GA TO SC/PIEDMONT NC
AND SOUTHEAST VA
CONCERNING...TORNADO WATCH 21...23...
VALID 310056Z - 310230Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 21...23...CONTINUES.
SUMMARY...TORNADO WATCHES 21/23 CONTINUE...WITH A PERSISTENT RISK
FOR DAMAGING WINDS AND ISOLATED TORNADOES FROM PARTS OF NORTH
FL/EAST-SOUTHEAST GA INTO SC/NC. AN ADDITIONAL WATCH WILL LIKELY BE
NEEDED BY AROUND MID-EVENING FOR PORTIONS OF THE NC PIEDMONT INTO
SOUTHEAST VA.
DISCUSSION...SQUALL LINE CONTINUES TO STEADILY MOVE
EAST-NORTHEASTWARD EARLY THIS EVENING...WITH SOME SIGNS OF GRADUAL
ACCELERATION...AS IT EXTENDS FROM UPSTATE NC/SC SOUTH-SOUTHWESTWARD
INTO EAST-CENTRAL/SOUTH-CENTRAL GA AND THE EASTERN FL PANHANDLE AS
OF 0030Z. AHEAD OF THE SQUALL LINE...NEAR 60/LOWER 60S F SURFACE
DEWPOINTS ARE COMMON AS TEMPERATURES REMAIN MILD /NEAR 70 F AT 00Z/
IN THE WARM SECTOR...COINCIDENT WITH 2-3 MB/2-HR PRESSURE FALLS. AS
HEIGHT FALLS STEADILY OCCUR ESPECIALLY OVER THE CAROLINAS/VA IN
CONCERT WITH THE ADVANCING UPPER TROUGH...A VERY STRONG DEEP LAYER
WIND FIELD WILL BE FURTHER ACCENTUATED BY STRENGTHENING LOW-LEVEL
WINDS /LOWEST 1-3 KM/ TO/ABOVE 70 KT ESPECIALLY ACROSS THE
CAROLINAS/VA...A TREND ALREADY NOTED PER REGIONAL WSR-88D VWPS AND
00Z OBSERVED SOUNDINGS. EVEN WITH RELATIVELY MINIMAL INSTABILITY
/SUCH AS 00Z GSO RAOB/ AND ONLY LIMITED LIGHTNING...ROBUST NATURE OF
THE FORCING/VERTICAL SHEAR WILL PROMOTE WELL-ORGANIZED/SUSTAINED
LINEAR STRUCTURES INCLUDING SMALL BOWS/EMBEDDED MESO-VORTICES.
THINKING IS THAT THE SEVERE THREAT WILL PERSIST OVER THE NEXT FEW
HOURS ACROSS SOUTH-CENTRAL/SOUTHEAST GA...WHILE OTHERWISE
POTENTIALLY INCREASING ACROSS THE PIEDMONT OF SC/NC /AND EVENTUALLY
SOUTHEAST VA/ THIS EVENING VIA WHAT MAY BE A SHARPENING/CONTINUALLY
ACCELERATING LINEAR SQUALL LINE/CONVECTIVE BAND.
..GUYER.. 01/31/2013
ATTN...WFO...AKQ...MHX...RAH...ILM...RNK...CHS...CAE...GSP...
JAX...FFC...TAE...
LAT...LON 29938416 31758313 36068053 36517756 35287784 33767971
32408134 30118262 29938416
|
|
Top/All Mesoscale Discussions/Forecast Products/Home
|
|