Area Forecast Discussion
Issued by NWS La Crosse, WI

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary On
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 041735
AFDARX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LA CROSSE WI
1235 PM CDT TUE AUG 4 2015

.SHORT TERM...(TODAY AND TONIGHT)
ISSUED AT 328 AM CDT TUE AUG 4 2015

WATER VAPOR/DATA ANALYSIS HAS A CLOSED MID-LEVEL LOW OVER EASTERN
ONTARIO CANADA WITH A TROUGH EXTENDING INTO THE GREAT LAKES REGION.
CYCLONIC FLOW WAS PRODUCING SCATTERED STRATOCUMULUS/ALTOCUMULUS
ACROSS NORTH CENTRAL WI. THE REST OF THE AREA WAS CLEAR WITH
TEMPERATURES AT 2 AM IN THE 50S TO THE LOWER 60S AS SURFACE HIGH
PRESSURE EXTENDED ACROSS THE UPPER MISSISSIPPI RIVER VALLEY REGION.

LOOK FOR QUIET/DRY WEATHER TODAY THROUGH TONIGHT AS HIGH PRESSURE
REMAINS IN CONTROL ACROSS THE REGION. PLAN ON HIGHS TODAY IN THE
MIDDLE 70S TO MIDDLE 80S. GIVEN HIGH PRESSURE OVERHEAD TONIGHT AND
LIGHT/CALM WINDS...PLAN ON LOWS TONIGHT IN THE UPPER 40S IN THE SAND
COUNTRY OF CENTRAL WI...AND IN THE 50S ELSEWHERE. ALSO EXPECTING
SOME FOG FORMATION IN FAVORED SAND COUNTRY OF CENTRAL WISCONSIN AND
IN RIVER CHANNELS INCLUDING THE MISSISSIPPI/WISCONSIN RIVERS.

.LONG TERM...(WEDNESDAY THROUGH MONDAY)
ISSUED AT 328 AM CDT TUE AUG 4 2015

QUIET/DRY CONDITIONS PERSIST INTO WEDNESDAY WITH THE HIGH HOLDING
OVERHEAD WITH HIGHS TOPPING OFF AGAIN IN THE MIDDLE 70S TO MIDDLE
80S.

SHOWER/THUNDERSTORM CHANCES RETURN TO THE AREA WEDNESDAY NIGHT INTO
THURSDAY AS A MID-LEVEL TROUGH MOVE IN FROM THE DAKOTAS. IT APPEARS
NOT A LOT OF RAINFALL WILL BE SEEN WITH THIS SYSTEM...GENERALLY A
TENTH OF AN INCH OR LESS.

BETTER SHOWER/THUNDERSTORM CHANCES WILL BE SEEN THURSDAY NIGHT INTO
FRIDAY AS A STRONGER MID-LEVEL WAVE/SURFACE LOW MOVES AGAIN OUT OF
THE DAKOTAS INTO THE REGION. THIS SYSTEM HAS THE POTENTIAL FOR A
LITTLE MORE RAINFALL...PERHAPS A QUARTER TO A HALF INCH.

SHOWER/THUNDERSTORM CHANCES CONTINUE THROUGH THE WEEKEND INTO MONDAY
AS SEVERAL MID-LEVEL WAVES RIPPLE OVER A RIDGE OF HIGH PRESSURE OVER
THE CENTRAL CONUS.

TEMPERATURE-WISE...LOOKS LIKE TEMPERATURES WILL BE NEAR NORMAL WITH
HIGHS IN THE MIDDLE 70S TO NEAR 80.

&&

.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z WEDNESDAY AFTERNOON)
ISSUED AT 1235 PM CDT TUE AUG 4 2015

AREAS OF VALLEY FOG ARE POSSIBLE NEAR KLSE LATE TONIGHT INTO EARLY
WEDNESDAY MORNING. OTHERWISE...VFR CONDITIONS ARE EXPECTED.
SURFACE HIGH PRESSURE WILL REMAIN IN CONTROL THIS AFTERNOON INTO
TONIGHT PROVIDING QUIET WEATHER. SOME CIRRUS IS STREAMING IN FROM
THE SOUTHWEST AND A FEW CUMULUS HAVE DEVELOPED MAINLY NORTH OF
INTERSTATE 90 WITH CLOUD BASES OF 4-5 KFT. THESE CUMULUS WILL
DISSIPATE EARLY THIS EVENING WITH THE LOSS OF DAYTIME HEATING.
THE CIRRUS SHOULD GRADUALLY  THIN LATE THIS AFTERNOON AND
EVENTUALLY SHIFT SOUTH OF THE TAF SITES THIS EVENING. VFR
CONDITIONS ARE EXPECTED AGAIN ON WEDNESDAY.

&&

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

$$

SHORT TERM...DAS
LONG TERM...DAS
AVIATION...WETENKAMP



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