Area Forecast Discussion
Issued by NWS La Crosse, WI

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

000
FXUS63 KARX 032308
AFDARX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LA CROSSE WI
510 PM CST TUE MAR 3 2015

.SHORT TERM...(TONIGHT THROUGH WEDNESDAY)
ISSUED AT 300 PM CST TUE MAR 3 2015

THE WINTRY MIX OF FREEZING DRIZZLE AND SNOW HAS MOVED OUT OF THE
AREA. THEREFORE...THE WINTER WEATHER ADVISORY WAS CANCELLED EARLY
AT 241 PM CST.

WITH A MORE OR LESS DRY FORECAST FOR THE NEXT SEVEN DAYS(EXCEPT
SUNDAY)...MAIN CHALLENGE WILL BE TEMPERATURES THROUGH EARLY NEXT
WEEK. 03.12Z MODEL SUITE IN GOOD OVERALL AGREEMENT AND WILL FOLLOW A
BLENDED SOLUTION FOR THIS FORECAST.

FOR TONIGHT...SURFACE RIDGE AXIS BUILDS ACROSS THE UPPER MS RIVER
VALLEY RESULTING IN CLEARING SKIES. PRESSURE GRADIENT REMAINS STRONG
ENOUGH FOR BREEZY NORTHWEST WINDS THROUGH THE NIGHT. WILL MAINTAIN
PATCHY BLOWING SNOW THIS EVENING FOR AREAS ACROSS NORTHEAST IA/
SOUTHEAST MN WHERE THERE IS AROUND 30 KTS IN THE MIXED LAYER...
BUT NOT EXPECTING MUCH IMPACT WITH AN OCCASIONAL DROP IN
VISIBILITY AND /OR DRIFTING ACROSS AREA ROADWAYS. STRONGER WINDS
COMBINED WITH TEMPERATURES FALLING INTO THE SINGLE DIGITS
ABOVE/BELOW ZERO WILL RESULT IN WIND CHILL VALUES FROM -10 TO -25
TONIGHT. AFTER COLLABORATING WITH NEIGHBORING OFFICES...WILL HOLD
OFF ON A WIND CHILL ADVISORY AS THE COLDEST VALUES SHOULD BE
RATHER BRIEF AND LIMITED IN AREAL EXTENT.

WEDNESDAY WILL BE PARTLY SUNNY AND DRY AS MAIN 1040 HPA SURFACE
HIGH DROPS SOUTH INTO THE NORTHERN PLAINS. HIGH CENTER MOVES
ACROSS THE DAKOTAS...KEEPING A MODEST PRESSURE GRADIENT ACROSS THE
REGION AND NORTHWEST SURFACE WINDS FROM 10 TO 20 MPH...GUSTING AT
TIMES TO 25 MPH. ARCTIC AIR MASS WITH 925 HPA TEMPERATURES FROM
-15 TO -20 C WILL RESULT IN DAYTIME HIGHS FROM THE SINGLE DIGITS
ABOVE ZERO TO THE MID TEENS.

.LONG TERM...(WEDNESDAY NIGHT THROUGH TUESDAY)
ISSUED AT 300 PM CST TUE MAR 3 2015

SURFACE HIGH TO PASS TO THE SOUTH ON THURSDAY RESULTING IN LIGHT
WESTERLY WINDS. DRY CONDITIONS TO CONTINUE UNDER MOSTLY SUNNY SKIES...
BUT WITH LITTLE CHANGE IN COLD AIR MASS...TEMPERATURES WILL BE
VERY SIMILAR TO THOSE ON WEDNESDAY.

FRIDAY THROUGH THE WEEKEND AND INTO EARLY NEXT WEEK...TEMPERATURES
MODERATE EACH DAY AS NORTHWEST FLOW ALOFT FLATTENS A BIT AND
ALLOWS WARMER AIR MASS ACROSS THE WESTERN CONUS TO OOZE INTO THE
CENTRAL PLAINS. EXPECT DAYTIME HIGHS BY FRIDAY INTO THE WEEKEND TO
REACH THE MID TO UPPER 30S. AN EVEN MORE IMPRESSIVE WARM-UP ON TAP
FOR EARLY NEXT WEEK AS 925 HPA TEMPERATURES RISE WELL ABOVE ZERO
CELSIUS. HIGHS BY NEXT MONDAY/TUESDAY LIKELY TO RISE INTO THE 40S.

THERE IS A SLIGHT CHANCE FOR PRECIPITATION ON SUNDAY AS STRONGER
SHORT-WAVE MOVES ACROSS THE UPPER MS RIVER VALLEY. IF PRECIPITATION
MATERIALIZES...MAY NEED TO ADDRESS PHASE ISSUES GIVEN WARMER AIR
MASS...BUT FOR NOW WILL KEEP IT AS ALL SNOW FOR SIMPLICITY. THE
REST OF THE SEVEN DAY FORECAST WILL BE DRY.

&&

.AVIATION...(FOR THE 00Z TAFS THROUGH 00Z WEDNESDAY EVENING)
ISSUED AT 510 PM CST TUE MAR 3 2015

BACK EDGE OF A 1.5-2 KFT CLOUD DECK PUSHING INTO KRST...AND SHOULD
BE BY KLSE BETWEEN 04-06Z. NUMEROUS CLOUD STREETS WEST/NORTH OF THIS
CLOUD SHIELD...PER SATELLITE IMAGERY. WOULD EXPECT DISSIPATION OF
THESE STREETS EARLY THIS EVENING AS THEY LOSE THEIR MAIN DRIVING
FACTOR - DAYTIME HEATING. IF CURRENT TRENDS HOLD...SHOULD BE VFR
BEFORE 06Z TONIGHT FOR KRST/KLSE...CONTINUING THROUGH WED.

TIGHT PRESSURE GRADIENT AND MIXING SHOULD KEEP WINDS STIFF FROM THE
NORTHWEST THROUGH MUCH OF WEDNESDAY. GUSTS SHOULD CONTINUE THROUGH
THE PERIOD...WITH BUFKIT SOUNDINGS SUGGESTING ENOUGH MIXING. KLSE
COULD BE THE EXCEPTION GIVEN ITS VALLEY LOCATION. WINDS IN EXCESS OF
20 KTS HAVE PRODUCED SOME MVFR VSBY BLSN AT KRST...AND WILL KEEP
THIS MENTION THROUGH MID EVENING.

&&

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

$$

SHORT TERM...ROGERS
LONG TERM...ROGERS
AVIATION...RIECK


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.