300
FNUS73 KARX 221326
FWSARX
SPOT FORECAST FOR PR30...US FISH AND WILDLIFE SERVICE
NATIONAL WEATHER SERVICE LA CROSSE WI
826 AM CDT THU MAY 22 2008
FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON MAY 22.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE IN LA CROSSE.
DISCUSSION
A RIDGE OF HIGH PRESSURE WILL HOLD ACROSS THE AREA
TODAY FOR SUNNY AND DRY CONDITIONS. MINIMUM RH LEVELS THIS
AFTERNOON SHOULD BOTTOM OUT IN THE UPPER 20 TO MID 30 PERCENT
RANGE WITH A EASTERLY SURFACE AIRFLOW. AN UPPER LEVEL DISTURBANCE
WILL EJECT NORTHEAST OUT OF THE CENTRAL PLAINS TONIGHT TOWARD THE
UPPER MIDWEST. A BAND OF SHOWERS AND THUNDERSTORMS ARE EXPECTED
WITH THIS DISTURBANCE WHICH MAY AFFECT AREAS OF SOUTHEAST MINNESOTA
INTO FAR SOUTHWEST WISCONSIN AFTER MIDNIGHT. THE SHOWER AND
THUNDERSTORM CHANCE WILL CONTINUE ACROSS SOUTHEAST MINNESOTA AND
FAR SOUTHWEST WISCONSIN THROUGH FRIDAY AS THE DISTURBANCE
CONTINUES TO MOVE NORTHEAST AND WEAKEN. THE RIDGE OF HIGH PRESSURE
WILL REBOUND OVER THE REGION FRIDAY NIGHT THROUGH SATURDAY FOR A
RETURN TO WARMER AND DRIER CONDITIONS. A COLD FRONT WILL WORK INTO
THE AREA FROM THE NORTHERN PLAINS SATURDAY NIGHT THROUGH MEMORIAL
DAY FOR INCREASING SHOWER AND THUNDERSTORM CHANCES.
TODAY
SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........60 AT IGNITION...MAX 69.
RH..................37 PERCENT AT IGNITION...MIN 28.
WIND (20 FT)........WINDS EAST AT 6 MPH AT IGNITION...OTHERWISE
LIGHT WINDS BECOMING EAST 5 TO 9 MPH IN THE
LATE MORNING AND AFTERNOON.
CWR.................NONE.
HAINES INDEX........4 OR LOW AT IGNITION...MAX 4.
SMOKE DISPERSAL.....FAIR /26700 KNOT-FT/ AT IGNITION.MAX...FAIR
/28400 KNOT-FT/.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
TEMPERATURE.........MIN 45.
RH..................MAX 76 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 7 MPH BECOMING LIGHT.
CWR.................NONE.
SMOKE DISPERSAL.....MIN...POOR /1700 KNOT-FT/.
FRIDAY
SKY/WEATHER.........PARTLY SUNNY.
TEMPERATURE.........MAX 64.
RH..................MIN 41 PERCENT.
WIND (20 FT)........EAST WINDS AROUND 5 MPH INCREASING TO 5 TO 9
MPH IN THE LATE MORNING AND AFTERNOON.
CWR.................NONE.
HAINES INDEX........MAX 5.
SMOKE DISPERSAL.....MAX...GOOD /43500 KNOT-FT/.
FORECASTER...ST/JE
REQUESTED BY...T FISCHER
TYPE OF REQUEST...PRESCRIBED
.TAG 20080522.PR30_.01/ARX
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