DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 211939
SWODY1
SPC AC 211937

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0137 PM CST MON JAN 21 2013

VALID 212000Z - 221200Z

...NO TSTM AREAS FORECAST...

...20Z OUTLOOK UPDATE...
NO CHANGES HAVE BEEN MADE TO THE PRIOR OUTLOOK. THE DEVELOPMENT OF
SCATTERED THUNDERSTORM ACTIVITY APPEARS UNDERWAY ACROSS PARTS OF
SONORA AND CHIHUAHUA...IN ASSOCIATION WITH AN UPPER IMPULSE DIGGING
INTO THE NORTHERN MEXICAN PLATEAU. HOWEVER...THERE STILL APPEARS
LITTLE RISK FOR DEVELOPMENT INTO AREAS NEAR/NORTH OF THE
INTERNATIONAL BORDER.

..KERR.. 01/21/2013

.PREV DISCUSSION... /ISSUED 0941 AM CST MON JAN 21 2013/

...SYNOPSIS...
A LARGE AREA OF UPPER-LEVEL CYCLONIC FLOW WILL RESIDE ACROSS MUCH OF
THE ERN CONUS TODAY...WHILE FARTHER W...A RIDGE OVER THE PAC COAST
WILL SHIFT SLOWLY EWD INTO THE GREAT BASIN. FALLING HEIGHTS AND
COOLING MIDLEVEL TEMPERATURES WILL ACCOMPANY A SHORTWAVE TROUGH
ADVANCING E ACROSS THE GREAT LAKES REGION. AS THIS
OCCURS...CONDITIONS WILL BECOME FAVORABLE FOR CONVECTIVELY ENHANCED
LAKE EFFECT SNOW BANDS...WHICH MAY YIELD AN ISOLATED LIGHTNING
STRIKE LATER THIS AFTERNOON AND NIGHT. OTHERWISE...AN EXPANSIVE AREA
OF SURFACE HIGH PRESSURE CENTERED OVER THE CNTRL CONUS WILL MAINTAIN
DRY STABLE CONDITIONS ACROSS THE REMAINDER OF THE NATION.

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