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KELOLAND.com | Weather Alerts

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Weather Alerts - (Osceola, IA)

.DISCUSSION

DEEP MIXING IN A DRY ATMOSPHERE IN ANTICIPATED THIS AFTERNOON


RESULTING IN WARM TEMPERATURES, COLLAPSING DEW POINTS, AND GUSTY WEST TO NORTHWEST WINDS. WINDS SHOULD AVERAGE 20 TO 30 MPH WITH GUSTS TO 35 MPH AT TIMES. WITH VERY DRY AIR MIXING TO THE SURFACE, LOWEST HUMIDITY LEVELS WILL BE IN THE 15 TO 25 PERCENT RANGE FOR A GOOD PORTION OF THE AFTERNOON. THIS WILL RESULT IN EXTREME FIRE DANGER THIS AFTERNOON, AND A RED FLAG WARNING HAS BEEN ISSUED FROM NOON TO 8 PM. CONDITIONS WILL RAPIDLY IMPROVED BY SUNSET AS MIXING COMES TO A HALT. ELEVATED FIRE DANGER IS LIKELY THROUGHOUT THE AREA WEDNESDAY DUE TO STRONG WINDS AROUND A FRONT MOVING THROUGH THE AREA. HIGHER HUMIDITY LEVELS AHEAD OF THE FRONT WILL RESTRICT FIRE DANGER TO VERY HIGH ACROSS NORTHWEST IOWA AND SOUTHWEST MINNESOTA. HOWEVER SOME EXTREME FIRE DANGER IS POSSIBLE DURING THE AFTERNOON WEST OF INTERSTATE 29 BEHIND FRONT, WHERE HUMIDITY WILL DROP TO 20 TO 30 PERCENT AND NORTHWEST WINDS BECOME GUSTY. DEEP MIXING WILL LEAD TO ANOTHER DAY OF AT LEAST VERY HIGH FIRE DANGER ON THURSDAY. CONSIDER POSTPONING BURNING DUE TO THE EXTREME FIRE DANGER. PEOPLE ARE URGED TO EXERCISE EXTREME CARE WITH RESPECT TO OUTDOOR ACTIVITIES THAT COULD CAUSE GRASS FIRES. AVOID EQUIPMENT THAT CAN CAUSE SPARKS NEAR DRY GRASS OR BRUSH. DO NOT TOSS CIGARETTES ON THE GROUND. REPORT NEW FIRES QUICKLY TO THE NEAREST FIRE DEPARTMENT OR LAW ENFORCEMENT OFFICE. , EXTREME FIRE DANGER, THE GRASSLAND FIRE DANGER INDEX WILL REACH THE EXTREME CATEGORY THIS AFTERNOON. EXTREME WEATHER CONDITIONS OR A VERY LOW MOISTURE CONTENT OF GRASSES, AND OTHER DRY ORGANIC MATERIAL ON THE GROUND, INDICATE THAT CRITICAL BURNING CONDITIONS EXIST. A FIRE WILL START EASILY AND HAS THE POTENTIAL TO BECOME LARGE AND SPREAD QUICKLY BECOMING ERRATIC WITH EXTREME BEHAVIORAL CHARACTERISTICS. NO OUTDOOR BURNING SHOULD TAKE PLACE. THE OUTLOOK FOR TUESDAY AFTERNOON, THE GRASSLAND FIRE DANGER INDEX WILL REACH THE MODERATE CATEGORY.


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