Wednesday, April 21, 2010

21 APRIL 2010 EXTENDED FORECAST

21 APRIL 2010 EXTENDED FORECAST

A WEAK UPPER LEVEL DISTURBANCE WILL MOVE SOUTHEAST ACROSS SOUTHERN IOWA TODAY SPARKING SHOWERS AS FAR NORTH AS I-80. LOW PRESSURE DEVELOPING OVER THE WESTERN U.S. WILL BECOME MORE ORGANIZED OVER THE CENTRAL ROCKIES ON THURSDAY. THE LOW WILL ADVANCE EAST THRU THE UPPER MIDWEST FRIDAY INTO THE WEEKEND.

AS THE LOW FROM THE ROCKIES APPROACHES, THUNDERSTORMS WILL OVERSPREAD THE SOUTHERN HALF OF IOWA THURSDAY NIGHT...AND THE REST OF THE REGION FRIDAY INTO THE WEEKEND. STRONG STORMS WILL BE POSSIBLE FRIDAY AFTERNOON INTO FRIDAY NIGHT.

THE CHANCE FOR RAIN WILL CONTINUE INTO SUNDAY WITH ONLY A BRIEF DRY SPELL EXPECTED TUES AND WED.


TODAY 21ST - ISOLATED AFTERNOON SHOWERS - PARTLY TO MOSTLY CLOUDY - TEMPS 73

THURS 22ND - BECOMMING MOSTLY CLOUDY - AFTERNOON SHOWERS/ISOLATED THUNDERSTORMS - TEMP 69

FRIDAY AND SATURDAY 23RD/24TH - SHOWERS AND THUNDERSTORMS (SOME STRONG STORMS WITH HEAVY RAIN FRIDAY MORNING) - WINDY - TEMP MID 60'S - RAINFALL 3/4 TO 1 INCH

SUNDAY AND MONDAY 25TH/26TH - SHOWERS AND THUNDERSTORMS - WINDY - TEMP HIGH 50'S - RAINFALL 1/2 INCH

TUESDAY AND WED 27TH/28TH - MOSTLY TO PARTLY CLOUDY

THURSDAY AND FRIDAY 29TH/30TH - SHOWERS/THUNDER - WINDY

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