HEADLINES: SOUTHERLY WINDS WILL USHER IN WARM AND HUMID AIR AHEAD OF AN APPROACHING COLD FRONT......HIGH TEMPS AND DEW POINTS WILL COMBINE FOR HEAT INDEX BREAKING 100/105F WEDNESDAY.......SEVERE THUNDERSTORMS WITH DAMAGING WINDS/HAIL/HEAVY RAIN EXPECTED WITH COLD FRONT PASSAGE WEDNESDAY EVENING........
MY BIGGEST FORECAST CHALLENGE OVER THE NEXT 3 DAYS IS WHAT TO DO WITH TODAY.......THE STORMS WEDNESDAY AFTERNOON/EVENING IS KIND OF A 'NO-BRAINER" - ALMOST A GIVEN.......I'M FEELING THERE IS AN OUTSIDE SHOT AT SOME ISOLATED SHOWERS/STORM DEVELOPMENT THIS AFTERNOON WITH OUR TEMPS REACHING INTO THE MID 80'S AND MOISTURE ON A STRONG INCREASE.....AFTER ALL, THIS IS IOWA IN THE SUMMERTIME.....RIGHT NOW I'M THINKING THE FOG WILL CLEAR BY MID MORNING......THIS AFTERNOON THERE SHOULD BE SOME SHOWER DEVELOPMENT ALONG THE FOG CLEARING LINE FROM WATERLOO, AND AS FAR SOUTH AS I-80 AND EASTWARD.......THIS IS RELATIVELY A NORMAL PROGRESSION IN THIS SITUATION DUE TO THE DIFFERENTIAL HEATING THAT WILL TAKE PLACE BEFORE THE FOG CLEARS - TO PUT IT SIMPLY, THE FOG FREE AREA WEST OF THE FOG LINE WILL HEAT UP QUICKER THAN THE AREA EXPERIENCING THE MORNING FOG - AND SHOWERS WILL DEVELOP ALONG THE MOIST AREA MENTIONED ABOVE.......
13 JULY 2010 EXTENDED FORECAST
TODAY 13TH - MORNING FOG THEN PARTLY CLOUDY - ISOLATED SHOWERS/THUNDER (MAINLY ALONG I-80 AND NORTH) - TEMP 85
WEDNESDAY AND THURSDAY 14TH/15TH - HUMID - PARTLY CLOUDY WITH GUSTY SOUTHWEST WIND - THEN MOSTLY CLOUDY WITH THUNDERSTORMS DEVELOPING AFTER "NOON" WEDNESDAY (SEVERE STORMS 4-7 PM) AND LASTING INTO MIDDAY THURSDAY - TEMPS LOW 90'S - HEAT INDEX 100/105F
FRIDAY 16TH - PARTLY CLOUDY - TEMP 86
SATURDAY THRU MONDAY 17TH THRU 19TH - HOT AND HUMID - PARTLY TO MOSTLY CLOUDY WITH ISOLATED TSHOWERS - TEMPS NEAR 90
TUESDAY AND WEDNESDAY 20TH/21ST - HOT - PARTLY CLOUDY WITH GUSTY SOUTHWEST WINDS - THEN MOSTLY CLOUDY WEDNESDAY WITH THUNDERSTORMS - LOW/MID 90'S
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