Area Forecast Discussion
Issued by NWS La Crosse, WI

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000
FXUS63 KARX 140832
AFDARX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LA CROSSE WI
332 AM CDT TUE APR 14 2015

.SHORT TERM...(TODAY THROUGH TONIGHT)
ISSUED AT 332 AM CDT TUE APR 14 2015

HIGH PRESSURE SPRAWLED N/S ACROSS THE UPPER MISSISSIPPI RIVER VALLEY
PROVIDING THE REGION WITH CLEAR SKIES AND LIGHT/CALM WINDS. DRYNESS
OF THIS AIRMASS/LIGHT-CALM WINDS ALLOWING TEMPERATURES TO DROP INTO
THE UPPER 20S/LOWER 30S IN THE SAND COUNTRY OF CENTRAL WI.
OTHERWISE...ACROSS THE REST OF THE AREA...TEMPERATURES WERE IN THE
UPPER 30S TO THE MIDDLE 40S.

HIGH PRESSURE WILL REMAIN IN CONTROL TODAY THROUGH TONIGHT FOR
QUIET/MOSTLY CLEAR CONDITIONS. LOOK FOR HIGHS TODAY IN THE 60S AND
LOWS TONIGHT BOTTOMING OUT IN THE UPPER 30S TO THE LOWER 40S.

VERY DRY AIRMASS IN PLACE TODAY WILL YIELD RELATIVE HUMIDITY VALUES
IN THE 15-20 PERCENT RANGE. HOWEVER...WITH VARIABLE/LESS THAN 10 MPH
WINDS...FIRE WEATHER CONCERNS NOT AS HIGH AS THAT ON MONDAY.

.LONG TERM...(WEDNESDAY THROUGH MONDAY)
ISSUED AT 332 AM CDT TUE APR 14 2015

HIGH PRESSURE/DRIEST AIR START TO PUSH EAST OF THE AREA ON
WEDNESDAY. HOWEVER...IT REMAINS PRETTY DRY WITH A TIGHTENING
PRESSURE GRADIENT PRODUCING BREEZY SOUTHEAST WINDS OF 10-20 MPH.
THIS COULD PRODUCE SOME FIRE WEATHER CONCERNS BY WEDNESDAY
AFTERNOON...MAINLY ALONG AND EAST OF THE MISSISSIPPI RIVER WHERE
MINIMUM RELATIVE HUMIDITIES WILL BE IN THE 20-25 PERCENT RANGE.
OTHERWISE...LOOK FOR HIGH TEMPERATURES TO TOP OFF IN THE MIDDLE AND
UPPER 60S.

LATEST DETERMINISTIC MODELS STILL SHOW A MID-LEVEL TROUGH PUSHING
NORTHEAST INTO THE REGION WEDNESDAY FOR A SLIGHT CHANCE OF SHOWERS
MAINLY AFTER MIDNIGHT. THIS WAVE PASSES EAST OF THE AREA WITH SOME
RIDGING TAKING PLACE ON THURSDAY FOR DRY CONDITIONS. LOOK FOR LOWS
WEDNESDAY NIGHT IN THE LOWER/MIDDLE 40S AND HIGHS ON THURSDAY MAINLY
IN THE MIDDLE 60S.

ANOTHER SMALL-END CHANCE OF SHOWERS RETURN TO THE AREA THURSDAY
NIGHT INTO FRIDAY AS THE NAM/GFS SHOW A MID-LEVEL TROUGH APPROACH
FROM THE NORTHERN PLAINS.

SATURDAY LOOKS DRY FOR NOW...BUT SHOWER CHANCES MAKE ANOTHER
APPEARANCE ON SUNDAY...LASTING INTO MONDAY AS SOUTHERN/NORTHERN
STREAM MID-LEVEL TROUGHS PHASE AND APPROACH THE REGION. LOOKS LIKE
HIGHS AGAIN IN THE 60S ON SATURDAY...BUT THEN SOME COOLING TAKES
PLACE SUNDAY INTO MONDAY AS CLOUDS AND PRECIPITATION CHANCES SPREAD
INTO THE AREA.

&&

.AVIATION...(FOR THE 06Z TAFS THROUGH 06Z TUESDAY NIGHT)
ISSUED AT 1105 PM CDT MON APR 13 2015

CIGS/WX/VSBY...
EXTENDED PERIOD OF VFR CONDITIONS WITH THE REGION
UNDER THE INFLUENCE OF DRY HIGH PRESSURE. SKC/SCT SKIES.

WINDS...
WINDS WILL CONTINUE TO DROP A BIT MORE OVERNIGHT...MORE
LIGHT AND SOUTHERLY. WILL KEEP THE SOUTH DIRECTION AT LESS THAN 10
KTS FOR TUE...WITH LIGHT SOUTHEAST TUE NIGHT.

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
WI...NONE.
MN...NONE.
IA...NONE.

&&

$$

SHORT TERM...DAS
LONG TERM...DAS
AVIATION...RIECK



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