Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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 KOAX 202019
AFDOAX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
319 PM CDT MON APR 20 2015


.SHORT TERM...(TONIGHT)
ISSUED AT 316 PM CDT MON APR 20 2015

.SHORT TERM...TONIGHT. WINDS WILL REMAIN STRONG THROUGH ABOUT 00Z
THEN DIMINISH THROUGH THE EVENING. WIND ADVISORY WILL REMAIN IN
EFFECT UNTIL 6 PM. RED FLAG WARNING WILL ALSO REMAIN IN EFFECT UNTIL
7 PM.

OTHERWISE...SCATTERED DECK OF MID CLOUDS WILL PREVAIL  OVERNIGHT...
WITH SOME LOSS OF COVERAGE AS THE SUN GOES DOWN. TEMPS ARE FORECAST
TO DROP INTO THE LOWER TO MID 30S...AND IN SOME CASES BELOW FREEZING
IN NORTHEAST NEBRASKA. AFTER COORDINATION WITH SURROUNDING OFFICES...
WE ARE PROBABLY STILL JUST SLIGHTLY TOO EARLY FOR ANY FREEZE
HEADLINES SINCE THE AVERAGE LAST FREEZE IN NORTHEAST NEBRASKA IS IN
LATE APRIL TO EARLY MAY.


.SHORT TERM...(TUESDAY THROUGH THURSDAY)
ISSUED AT 316 PM CDT MON APR 20 2015

WITH MODELS SHOWING LARGE SCALE PATTERN ALTERING TO TWO UPPER LEVEL
LOWS...ONE ANCHORED OFF THE BRITISH COLOMBIAN COASTLINE AND THE
OTHER SITUATED OVER ERN CANADA...NW FLOW ALOFT OVER THE NRN/CNTRL
PLAINS WILL ENSURE CHILLY CONDITIONS ARE ON THE WAY WITH HIGHS ON
WEDNESDAY GENERALLY IN THE UPPER 50S... AND AROUND 60 ON THURSDAY.
AS FOR TUESDAY THOUGH...DECENT MIXING WILL HELP PUSH HIGHS INTO THE
LOW/MID 60. OTHERWISE...DRY CONDITIONS EXPECTED THRU THE SHORT
TERM PDS.



.LONG TERM...(THURSDAY NIGHT THROUGH MONDAY)
ISSUED AT 316 PM CDT MON APR 20 2015
MAIN ISSUE CONTINUES TO BE POSSIBLE LATE NEXT WEEK...SPECIFICALLY
THURSDAY NIGHT THRU SAT...THEN SUNDAY AND SUNDAY NIGHT.

GFS/ECM/CMC ARE IN DECENT AGREEMENT SHOWING PCPN ACTIVITY EXPANDING
EWD OUT OF WRN KS/WRN NEB LATE THURSDAY NIGHT THEN ENVELOPING THE
CWA THRU FRIDAY EVENING IN RESPONSE TO POTENT VORT MAX MOVING THRU
KS ALONG WITH AXIS OF DEEP LYR AGEOSTROPHIC FORCING.  IN
ADDITION...APPEARS TO BE AGREEMENT AS WELL THAT GENEROUS PCPN
AMOUNTS WILL BE FOUND OVER THE SRN CWA. GIVEN MODEL
SIMILARITY...HAVE DECIDED TO NUDGE POPS JUST A BIT DURING THIS TIME.

NEXT CHANCE COMES SUNDAY AND SUNDAY NIGHT ASSOCIATED WITH A LOW
AMPLITUDE LONGWAVE TROF MOVING THRU THE CNTRL PLAINS. SMALL POPS ARE
ALREADY IN PLACE IN THE GOING FCST SO NO CHANGES NEEDED.

AS FOR TEMPS...STILL LOOKS LIKE CHILLY CONDITIONS THRU THE MAJORITY
OF NEXT WEEK WITH HIGHS GENERALLY IN THE UPPER 50S...THEN A MODEST
WARM UP NEXT SUNDAY AND MONDAY WITH HIGHS IN THE LOW/MID 60S.




&&

.AVIATION...(18Z TAFS FOR KOFK...KLNK AND KOMA.)
ISSUED AT 1222 PM CDT MON APR 20 2015

NORTHWEST WINDS AT 22 TO 35 KNOTS UNTIL ABOUT 00-01Z WHEN WINDS
DIMINISH. WEST WINDS INCREASE AGAIN TO 14 TO 22 KNOTS BY 21/15Z.
VFR CLOUDS THROUGH THE PERIOD.


&&

.OAX WATCHES/WARNINGS/ADVISORIES...
NE...WIND ADVISORY UNTIL 6 PM CDT THIS EVENING FOR NEZ011-012-015>018-
     030>034-042>045-050>053.

     RED FLAG WARNING UNTIL 7 PM CDT THIS EVENING FOR NEZ011-012-
     016>018-031>033.

IA...WIND ADVISORY UNTIL 6 PM CDT THIS EVENING FOR IAZ043-055-056-069.

&&

$$

.TONIGHT...DEWALD
SHORT TERM...DEE
LONG TERM...DEE
AVIATION...DEWALD


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