Sunday, October 11, 2009

DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 110449
SWODY1
SPC AC 110446

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1146 PM CDT SAT OCT 10 2009

VALID 111200Z - 121200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
BROAD CYCLONIC UPR FLOW WILL CONTINUE OVER THE COUNTRY ON SUNDAY.
NRN BRANCH WILL CARRY A STRONG SHORTWAVE TROUGH EWD FROM THE NRN
INTERMOUNTAIN REGION TO THE NRN PLNS THROUGH THE DAY. MEANWHILE...A
WEAKER SRN STREAM DISTURBANCE WILL QUICKLY TRANSLATE NEWD FROM THE
SWRN STATES TO THE SRN PLNS. IN THE LWR LVLS...STNRY FNT ACROSS THE
NRN GULF OF MEXICO NEWD INTO NRN FL/SRN GA WILL BEGIN A SLOW RETREAT
NWD.

...SRN GA/NRN FL...
WDLY SCTD AND DIURNALLY BASED TSTMS WILL DEVELOP INVOF THE
AFOREMENTIONED FRONT AND ALONG SEABREEZES SUNDAY AMIDST MLCAPES OF
1000-1500 J/KG. WEAK VERTICAL SHEAR AND POOR MID-LVL LAPSE RATES
WILL PRECLUDE SVR WEATHER.

...E TX TO THE CNTRL GULF CSTL STATES...
STABILITY WILL GRADUALLY DECREASE ATOP A SHALLOW FRONTAL INVERSION
ACROSS PRIMARILY SE TX EWD INTO LA...MS AND AL ON SUNDAY AS LLVL
FLOW BEGINS TO RESPOND TO THE EJECTING SRN STREAM WAVE. GENTLE
ISENTROPIC ASCENT MAY LEAD TO SPORADIC ELEVATED TSTMS...ESPECIALLY
DURING THE LATTER HALF OF THE PD. SVR WEATHER PROSPECTS WILL REMAIN
LOW...HOWEVER.

..RACY/JEWELL.. 10/11/2009

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