Hazardous weather outlook, National Weather Service, Norman

 

HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
500 AM CDT THU JUL 28 2011

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN…WESTERN…
CENTRAL…AND SOUTHERN OKLAHOMA…AND WESTERN NORTH TEXAS.

.DAY ONE…TODAY AND TONIGHT…

THUNDERSTORM OUTLOOK…
SEVERE THUNDERSTORMS ARE NOT EXPECTED.

DISCUSSION…
A COLD FRONT WILL MOVE SOUTH FROM NEBRASKA INTO KANSAS TODAY AND
TONIGHT. THUNDERSTORMS WILL LIKELY INCREASE LATER TODAY NEAR THE
FRONT… TO THE NORTH OF OKLAHOMA. OUTFLOW FROM THESE STORMS MAY
MOVE INTO NORTHERN OKLAHOMA LATE TODAY OR TONIGHT. THE ASSOCIATED
SURFACE BOUNDARY MAY BECOME THE FOCUS FOR A FEW THUNDERSTORMS OVER
NORTHERN OKLAHOMA. WEAK WINDS ALOFT AND WEAK INSTABILITY WILL LIMIT
THE CHANCE OF SEVERE STORMS… BUT THE CONTINUED PRESENCE OF HOT AND
RELATIVELY DRY AIR AT LOW LEVELS WILL MEAN THAT A FEW STORMS COULD
PRODUCE STRONG GUSTY WINDS… ESPECIALLY THIS EVENING.

PROBABILITY TABLE…
VALID THROUGH 700 AM CDT FRIDAY JUL 29.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA…30 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR…10 PERCENT.

OTHER HAZARDOUS WEATHER…
HEAT AGAIN WILL REACH DANGEROUS LEVELS TODAY OVER THE ENTIRE AREA. A
HEAT ADVISORY REMAINS IN EFFECT.

.DAYS TWO THROUGH SEVEN…FRIDAY THROUGH WEDNESDAY…

THUNDERSTORM OUTLOOK…
THERE IS A CHANCE OF THUNDERSTORMS FRIDAY INTO SATURDAY… MAINLY
OVER SOUTHEASTERN OKLAHOMA. EFFECTS OF TROPICAL STORM DON… OR ITS
REMNANTS… WILL LIKELY REMAIN SOUTH OF THE AREA. BUT AN INTRUSION
OF INCREASING GULF MOISTURE TO THE NORTH OF THE SYSTEM MAY RESULT IN
AN INCREASE IN THE CHANCE OF THUNDERSTORMS DURING THE DAYTIME AND
EVENING HOURS THROUGH SATURDAY.

OTHER HAZARDOUS WEATHER…
THE HEAT ADVISORY HAS BEEN EXTENDED THROUGH FRIDAY. THERE MAY BE
SOME SLIGHT RELIEF FROM THE EXTREME HEAT EARLY IN THE WEEKEND… BUT
THE LARGE DOME OF HIGH PRESSURE ALOFT OVER THE CENTRAL AND SOUTHERN
PLAINS IS FORECAST TO BUILD AND INTENSIFY AGAIN BY EARLY NEXT WEEK.
EXTREME HEAT IS THEN LIKELY TO PERSIST OR RETURN FOR AT LEAST THE
FIRST HALF OF NEXT WEEK. WILDFIRE POTENTIAL WILL ALSO REMAIN HIGH
DUE TO THE CONTINUED HOT AND DRY CONDITIONS.

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