RSS FeedsIssued by NWS Omaha/Valley, NE
000 FXUS63 KOAX 240836 AFDOAX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 236 AM CST TUE NOV 24 2009 .DISCUSSION... WV LOOP SHOWING MAIN CIRCULATION OVER NORTHEAST KANSAS AT 07Z WITH SOME CONVECTION IN ADVANCE OF MID LEVEL SPEED MAX OVER THE SOUTHERN PLAINS FROM NORTHEAST KANSAS INTO WESTERN IOWA. TWO AREAS OF PRECIP SHOWING UP ON RADAR AT 07Z WITH MAIN FOCUS OVER SOUTHEAST NEBRASKA INTO SOUTHWEST IOWA. MODELS SEEM TO BE HANDLING THE AREAL EXTENT OF THIS HEAVIER PRECIP VERY WELL AS THE UPPER WAVE LIFTS ACROSS THE REGION TODAY. LITTLE NEED TO CHANGE CURRENT FORECAST FOR TODAY WITH CATEGORICAL POPS ALONG THE EASTERN BORDER OF NEBRASKA INTO SOUTHWEST IOWA. RAIN EXPECTED TO END DURING THE AFTERNOON FOR MOST EASTERN AREAS WITH SHARP CUTOFF TO THE PRECIP. TEMPERATURES APPEAR WARM ENOUGH TO PRECLUDE ANY SNOW TODAY. MAIN SURGE OF COLD AIR COMES IN BEHIND THIS INITIAL WAVE TONIGHT INTO WEDNESDAY AS SECONDARY WAVE DROPS OUT OF CENTRAL CANADA. JUST MENTIONED FLURRIES ON WEDNESDAY WITH THIS SYSTEM AS MAIN CIRCULATION TRACKS EAST OF THE AREA. COLD WEDNESDAY INTO THURSDAY THEN WARMING UP AS RIDGING DEVELOPS OVER THE PLAINS REGION. PATTERN REMAINS ACTIVE IN THE EXTENDED PERIOD AS SERIES OF WAVES DROP INTO THE WESTERN CONUS UNDER SPLIT FLOW. ECMWF MORE EXUBERANT OF THE MODELS WITH SYSTEM LATE IN THE PERIOD. NO CHANGES AT THIS TIME TO THE EXTENDED PERIOD. && .AVIATION... TAF SITES KOFK/KOMA/KLNK 06Z TAFS DEFORMATION BAND THAT SET UP EARLIER ACROSS THE KOFK TAF SITE WILL CONTINUE TO DIMINISH...WITH -SHRA ENDING THERE BEFORE 11Z AND MVFR CIGS BCMG VFR THEREAFTER. KLNK/KOMA WILL BE ON THE WESTERN/NORTHERN EDGE OF THE SECOND DEFORMATION BAND THAT IS SETTING UP JUST SOUTH OF THESE TAF SITES. MVFR CONDITIONS WITH -SHRA WILL PREVAIL THROUGH MUCH OF THE MORNING...ALTHOUGH IMPROVING CONDITIONS WITH -SHRA ENDING AND CIGS GOING BACK TO VFR ARE FORECAST AT KLNK BY 17Z...AND AT KOMA BY 22Z-01Z. GUSTY NORTHWESTERLY WINDS TO 20-28KTS ARE FORECAST AT ALL TAF SITES THROUGH THE DAY...BUT WITH GUSTS ENDING BY 23Z ACROSS THE AREA. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...NONE. IA...NONE. && $$ FOBERT/DEWALD
