SPC Day 2 Thunderstorm Outlook Issued 0830Z 20040120

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ZCZC SPCSWODY2 ALL
ACUS02 KWNS 200819
SPC AC 200819

DAY 2 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
0219 AM CST TUE JAN 20 2004

VALID 211200Z - 221200Z

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 10 W YUM 30 SE EED 20
SW GCN 80 NW GUP 45 ESE DRO 45 WSW RTN 35 ENE 4CR 40 E ALM ELP.

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
A MID LEVEL SHORTWAVE TROUGH NOW OVER NRN CA WILL DIG SWD AND EVOLVE
INTO A CLOSED LOW OVER THE LOWER CO RIVER VALLEY LATE TONIGHT INTO
TOMORROW...AND THEN BEGIN TO MOVE MORE TO THE E OVER SRN AZ/NW
MEXICO BY TOMORROW NIGHT.  COLD MID LEVEL TEMPERATURES /-24 TO -26 C
AT 500 MB/ WILL ACCOMPANY THIS LOW...ALONG WITH LOW-MID LEVEL LAPSE
RATES NEAR 8 C/KM.  THOUGH LOW-MID LEVEL MOISTURE WILL REMAIN
MARGINAL WITH THIS SYSTEM...THE COMBINATION OF STEEP MID LEVEL LAPSE
RATES AND DAYTIME HEATING WILL CONTRIBUTE TO WEAK INSTABILITY OVER
AZ/WRN NM.  ISOLATED TO WIDELY SCATTERED THUNDERSTORMS WILL BE
POSSIBLE ACROSS THESE AREAS...PRIMARILY DURING THE AFTERNOON AND
EVENING OVER THE MOGOLLON RIM.

ELSEWHERE...A CONTINENTAL POLAR AIR MASS AND STABLE THERMODYNAMIC
PROFILES WILL REMAIN ACROSS THE ERN STATES...WHILE A REINFORCING
SURGE OF ARCTIC AIR SURGES SEWD ACROSS THE UPPER MS VALLEY AND GREAT
LAKES IN ASSOCIATION WITH A STRONG NRN STREAM SHORTWAVE TROUGH.

..THOMPSON.. 01/20/2004

...NOTICE...
FOR USERS DECODING THE POINTS PARAGRAPH HEREIN...LATITUDE AND
LONGITUDE POINTS FOR THE CATEGORICAL AND PROBABILISTIC OUTLOOK
GRAPHICS ALSO ARE LOCATED IN A SEPARATE PRODUCT UNDER THE WMO
HEADINGS WUUS01 PTSDY1...WUUS02 PTSDY2...AND WUUS03 PTSDY3.  THE
INCLUSION OF POINTS IN THIS PRODUCT WILL EVENTUALLY BE DISCONTINUED.

$$