RSS FeedsIssued by NWS Grand Junction, CO
000 FXUS65 KGJT 212155 AFDGJT AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 300 PM MST SAT NOV 21 2009 .SHORT TERM...TONIGHT THROUGH MONDAY... IR SATELLITE IMAGERY SHOWING SECOND OF THREE DISTURBANCES JUST ENTERING CWA OVR ERN UT ATTM. LATEST 20Z SFC OBS NOT SHOWING ANY PRECIP OVER CENTRAL UT CURRENTLY. EVEN SO...KEPT MENTION OF SHOWERY PRECIP FOR EXTREME NERN UT/NWRN CO AND CENTRAL MTNS THIS EVENING AS MODELS DO HIGHLIGHT ENOUGH INSTABILITY FOR SOME MINOR PRECIP. SMALL REPRIEVE DURING THE DAY SUNDAY BTWN OPEN WAVES UNTIL LATE SUN AFTN/EVENING AS THE NEXT SYSTEM DIGS DOWN. APPROXIMATELY 100KT JET DIGS DOWN OVR INTERMOUNTAIN WEST LEAVING UT/CO IN DIV SECTOR...OR AREA OF FAVORABLE UPWARD MOTION...AND AS JET CONTINUES TO DIG SOUTHWARD...CHC FOR PRECIP INCREASES WITH PASSAGE OF SFC COLD FRONT. PREVIOUS GRIDS CAUGHT THIS THINKING VERY WELL WITH CHC TO SCHC SNOW NOON SUNDAY THRU AFTN MONDAY SO MADE ALMOST NO CHANGES TO CURRENT FORECAST ASIDE FROM BUMPING UP POPS FOR CEN/NRN MTNS SUN NIGHT INTO MONDAY. SNOW AMOUNTS SHOULD BE BTWN 3 TO 4 INCHES ABOVE 5000FT OR SO. REMAINING AREAS WILL SEE MOSTLY CLOUDY SKIES WITH TEMPS A FEW DEGREES COOLER THAN SEEN LATELY DUE TO INCD CLOUD COVER. .LONG TERM...MONDAY NIGHT THROUGH SATURDAY... A DRYING NWRLY FLOW WILL OCCUR MON NIGHT AS EXITING UPPER LOW MOVES INTO THE PLAINS AND RIDGE BUILDS OVER THE GRT BASIN. LITTLE CHANGE IS EXPECTED TUE AND WED WITH RIDGE TO OUR WEST PRODUCING A GENERALLY DRY NORTHWESTERLY FLOW. THERE MAY BE A FEW CLOUDS AT TIMES ESPECIALLY ACROSS THE NORTH...OTHERWISE FAIR CONDITIONS AMD MILD TEMPERATURES ARE EXPECTED. THE RIDGE LINE SHIFTS EASTWARD OVER OUR CWA THURSDAY WITH MILD CONDITIONS CONTINUING...ALONG WITH LIGHT WINDS. TOWARD THE END OF THE WEEK THE GFS AND EC DIVERGE SIGNIFICANTLY WITH THE EC SHOWING A DIGGING TROUGH INTO NEVADA AND UTAH. THE GFS SOLUTION SHOWS A SHORT WAVE FLATTENING THE RIDGE BUT KEEPS THE FORECAST AREA DRY. NO CHANGES TO THE DRY FORECAST UNTIL MODELS SHOW BETTER AGREEMENT. && .AVIATION... VFR CONDITIONS WILL REMAIN AS HIGH CLOUDS STREAM OVER THE AREA FOR THE REMAINDER OF TODAY. SOME SNOWSHOWERS LATER THIS EVENING AND TOMORROW MAY CAUSE SOME IFR...POSSIBLY EVEN LIFR...DUE TO DROPPING VIS AND LOWERED CIGS IN HEAVIER SNOWSHOWERS. KEGE AND KASE WILL BE SUSCEPTIBLE TO THESE SNOWSHOWERS WHILE REMAINING TAF SITES SHOULD SAY ABOVE VFR. && .GJT WATCHES/WARNINGS/ADVISORIES... CO...NONE. UT...NONE. && $$ SHORT TERM.....TGR LONG TERM......MC AVIATION.......TGR
