20 JULY 2010 EXTENDED FORECAST

POW COUNTY DODGED ANOTHER BULLET AS SHOWERS AND THUNDERSTORMS MOVED THRU OVERNITE. STORMS DEVELOPED WEST TO EAST AND MOVED ALONG A STALLED WARM FRONT OVER SRN IOWA. A GOOD LIGHTNING SHOW OVER POW COUNTY - BUT REMAINED DRY NORTH OF I-80 - EXTREME SW POW COUNTY PICKED UP DOPPLER RADAR INDICATED RAINFALL OF A TRACE TO .05.....HEAVY RAIN FELL IN STRONG STORMS ON LINE FROM DES MOINES - TO OSKALOOSA - AND EASTWARD ALONG AND SOUTH OF HWY 92. 2-4 INCHES FELL OVERNITE............

THE WARM FRONT WILL REMAIN STATIONARY THRU THE DAY TODAY AND TONITE.....EXPECT THUNDERSTORM REDEVELOPMENT THIS AFTERNOON WITH DAYTIME HEATING - ONCE AGAIN ALONG AND SOUTH OF I-80 - ISOLATED STORMS WILL LAST THRU THE NIGHT TONITE, AND END MID MORNING WEDNESDAY.....

WARM FRONT WILL MOVE SLIGHTLY BACK NORTH.....A WEAK UPPER LEVEL SYSTEM WILL MOVE OUT OF THE ROCKY MTNS TONITE, AND SHOW IT'S TEETH IN CENTRAL IOWA LATER WEDNESDAY. THIS WILL DRAG THE WARM FRONT BACK NORTH OF I-80 - AND BRING HEAVY PRECIP WITH IT.....EXPECT STRONG STORMS WITH HEAVY RAIN WEDNESDAY EVENING AND LAST THRU THE OVERNITE INTO THURSDAY MORNING.....PARTLY CLOUDY BY MID DAY THURSDAY - THEN SHOWERS AND STORMS AGAIN FRIDAY THRU SATURDAY MORNING AS A WEAK COLD FRONT PUSHES THRU - THE REST OF THE WEEKEND IS LOOKING OK...........

20 JULY 2010 EXTENDED FORECAST

TODAY 20TH - WARM/HUMID - MOSTLY CLOUDY TO PARTLY CLOUDY - SHOWERS/STORMS END BY 10 AM - AND REDEVELOP LATE AFTERNOON THRU SRN 1/3 OF POW COUNTY - TEMP 87

WEDNESDAY 21ST - MORNING THUNDERSTORMS - THEN PARTLY TO MOSTLY CLOUDY - STORMS WILL REDEVELOP OVERNITE WITH HEAVY RAINFALL (+2 INCHES) - TEMPS HUMID MID 80'S

THURSDAY 22ND - MORNING THUNDERSTORMS/HEAVY RAIN ENDING BY 9 AM - THEN PARTLY CLOUDY - GUSTY WSW WIND - TEMP 88

FRIDAY AND SATURDAY 23RD/24TH - MOSTLY CLOUDY WITH ISOLATED SHOWERS/STORMS ALONG AND SOUTH OF I-80 - GUSTY SW WIND - TEMPS NEAR 90/HUMID

SUNDAY THRU THURSDAY 25TH THRU 29TH - PARTLY CLOUDY - HOT AND HUMID WITH HIGH TEMPS STEADY IN LOW 90'S THRU THURSDAY - DAILY HEAT INDEX OF AROUND 105F - THUNDERSTORMS LATE TUESDAY AND LASTING INTO THURSDAY WILL COOL TEMPS BACK DOWN TO THE MID/HIGH 80'S AND HEAT INDEX'S BACK BELOW 90.................

NOTE:
Damaging thunderstorms will fire once again along the northern rim of heat baking the Southern states. Many cities and towns from the central Plains through the Ohio Valley are at risk for severe thunderstorms later today into tonight.

Thunderstorms that fire along the northern edge of heat are often referred to as "ring of fire" thunderstorms.

Today's thunderstorms will develop across southern Nebraska and northern Kansas to northern Kentucky and southern Ohio. These storms will generally move east-southeastward, following strong steering flow in the upper atmosphere.

Cities that will be in the path of potentially dangerous storms include: Omaha, Kansas City, Des Moines, Indianapolis, Cincinnati and Columbus - pretty much along and south of I-80.

Strong wind gusts over 60 mph and quarter-sized hail can cause damage with these thunderstorms.

Some of the strongest storms will also be capable of spawning dangerous tornadoes. The greatest threat for twisters today spans southeastern Nebraska and northern Kansas through southern Iowa, northern Missouri and western Illinois.