909
FXUS65 KGJT 180617
AFDGJT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
1117 PM MST TUE FEB 17 2026
KEY MESSAGES
- STRONG WINDS ARE EXPECTED TO CONTINUE WEDNESDAY WITH GUSTS
AROUND 30-50 MPH AND UPWARDS OF 70 MPH IN THE MOUNTAINS.
- ANOTHER ROUND OF MODERATE TO HEAVY SNOW IS EXPECTED ON
WEDNESDAY DURING THE DAY.
- A FINAL ROUND OF SNOW IS POSSIBLE FRIDAY, WITH DRIER
CONDITIONS EXPECTED THIS WEEKEND.
SHORT TERM /THROUGH THURSDAY NIGHT/
ISSUED AT 1116 PM MST TUE FEB 17 2026
AFTER A LULL IN ACTIVITY OVERNIGHT, PRECIPITATION FILLS BACK IN BY
DAYBREAK TOMORROW. MOISTURE WILL BE ON THE INCREASE AS THE NEXT WEAK
AR MOVES INLAND THROUGH THE LA BASIN. THE PWAT FORECAST IS ABOVE
NORMAL, BUT NOT IMPRESSIVELY SO, WITH ENSEMBLE GUIDANCE HIGHLIGHTING
VALUES 100-140% OF NORMAL. HOWEVER, THERE WILL BE SOME IMPRESSIVE
DYNAMIC SUPPORT THANKS TO IMPROVING PVA AHEAD OF A DIGGING PACIFIC
TROUGH AND DIFFLUENCE ALOFT. STRONG SOUTHWESTERLY WINDS MIXING DOWN
TO THE SURFACE FROM A 120+ KNOT JET WILL ALSO PROVIDE OROGRAPHIC
ENHANCEMENT ON FAVORED SLOPES. WITH THE MODEST COOLDOWN ASSOCIATED
WITH TODAY'S COLD FRONT, SNOW LEVELS WILL HAVE LOWERED A BIT AHEAD
OF THIS NEXT ROUND OF PRECIPITATION, AND ANOTHER, COLDER FRONT IS
EXPECTED TO PUSH THROUGH TOMORROW AFTERNOON. AS SUCH, FOR MOST
LOCATIONS PRECIPITATION TYPE WILL BE ALL SNOW, WITH RAIN TO A RAIN
SNOW MIX LIMITED TO LOWER VALLEYS. AFTER THE COLD FRONT PUSHES
THROUGH, THOUGH, EVEN THE DESERT VALLEY FLOORS WILL SEE A TRANSITION
TO ALL SNOW. LIGHT SHOWERS WILL LINGER THROUGH THE NIGHT BEFORE
FINALLY TAPERING OFF THURSDAY MORNING. FOR ELEVATIONS ABOVE 8000
FEET, SNOW TOTALS BY THURSDAY MORNING WILL BE IN THE 10-15 INCH
RANGE, WITH LOCALLY HIGHER AMOUNTS ON FAVORED SLOPES. BELOW THAT
ELEVATION, TOTALS WILL BE UNDER 4 INCHES. THIS COULD LEAD TO
DIFFICULT TRAVEL OVER THE PASSES DURING THURSDAY MORNING'S COMMUTE,
ESPECIALLY WITH SOME STILL BREEZY WINDS ALOFT. TRANSIENT RIDGING
BUILDS IN BY MIDDAY THURSDAY, WITH ONLY LIGHT OROGRAPHIC SHOWERS
LINGERING OVER THE HIGHER TERRAIN. MINOR ACCUMULATIONS UNDER 2
INCHES WILL BE POSSIBLE AT THE HIGHER ELEVATIONS OF THE NORTHERN
RANGES.
WINDS DROP TONIGHT ACROSS MORE SHELTERED VALLEYS, AS LOWER ELEVATION
WINDS DECOUPLE FROM THE SCREAMING SOUTHWESTERLY WINDS ALOFT.
HOWEVER, SURFACE WINDS WILL PICK BACK UP ONCE AGAIN BY MIDDAY
TOMORROW. BETWEEN THE STRONG SOUTHWESTERLY WINDS ALOFT MIXING DOWN
THE SURFACE WITH INCREASED PRECIPITATION COVERAGE, AND THE
TIGHTENING SURFACE PRESSURE GRADIENT AHEAD OF THE NEXT COLD FRONT,
SOUTHWESTERLY GUSTS OF 30-50 MPH WILL AGAIN BE POSSIBLE. WHERE
WINTER HIGHLIGHTS AREN'T IN EFFECT, WIND ADVISORIES HAVE BEEN ISSUED
FOR 5AM TO 5PM TOMORROW. A WHOLE HOST OF WINTER HIGHLIGHTS REMAIN
IN EFFECT THROUGH 5AM THURSDAY.
THE LAST ASPECT OF THE SHORT TERM OF NOTE ARE THE TEMPERATURES.
HIGHS TOMORROW WILL RUN NEAR TO AROUND 5 DEGREES BELOW NORMAL,
THANKS TO A COMBINATION OF TODAY'S COLD FRONT AND THE INCREASED
CLOUDS AND SHOWERS. MUCH COLDER AIR MOVES IN BEHIND TOMORROW
AFTERNOON'S COLD FRONT. HIGHS ON THURSDAY DROP TO CLOSE TO 10
DEGREES BELOW NORMAL, WITH LOCALLY COLDER TEMPERATURES IN FAVORED
COLD POOLS.
LONG TERM /FRIDAY THROUGH TUESDAY/
ISSUED AT 1116 PM MST TUE FEB 17 2026
BROAD CYCLONIC FLOW FROM THE ROCKIES TO THE GREAT LAKES WILL KEEP US
DRAPED IN COLDER AIR FRIDAY. AFTER A COLD START TO THE MORNING,
AFTERNOON HIGHS IN THE WAKE OF THE COLD FRONT WILL TREND FROM NORMAL
DOWN SOUTH TO AROUND 5 DEGREES BELOW CLIMATOLOGY ACROSS NORTHWEST
COLORADO AND NORTHEAST UTAH. WE WILL REMAIN CLOUDY TOO, SO WINTER
CONTINUES. A MODEST VORTICITY LOBE IN THE BASE OF THE UPPER LEVEL
TROUGH DIGS INTO THE FOUR CORNERS FRIDAY MORNING. IT PICKS UP
ANOTHER SHOT OF PACIFIC MOISTURE, LIKELY SOME LEFTOVER FROM THE
PREVIOUS STORM CYCLE. PWAT ANOMALIES JUMP TO AROUND 30 TO 40 PERCENT
ABOVE NORMAL CLIMATOLOGY. MODEL SPREAD AT THE PEAK OF THE MOISTURE
KEEPS ME ON THE FENCE WITH THIS ONE, GIVEN FORCING ALREADY NORTH OF
THE BEST MOISTURE. PROBABILISTIC 75TH PERCENTILE DATA IS SHOWING 6-8
INCHES OF SNOW ON THE CENTRAL MOUNTAINS AND SOUTHWARD. UP NORTH,
THINNING MOISTURE WILL STRUGGLE TO PRODUCE 3-5 INCHES. THE GENEROUS
COLD AIR IN PLACE AND HIGHER LIQUID SNOW RATIOS WILL JACK UP
ACCUMULATIONS A BIT TOO. MOISTURE THINS TO NEAR ZERO EARLY SATURDAY
MORNING, AS A BLOCKING RIDGE INCHES OVER THE ROCKIES. SKIES WILL
CLEAR OUT SATURDAY, BUT TEMPERATURES WILL HOVER AROUND NORMAL,
BEFORE REBOUNDING 5 TO 10 DEGREES ON SUNDAY BENEATH THE RIDGE.
HOWEVER, WE'LL SEE HOW CLOUD COVER STREAMING OVER THE DIRTY RIDGE
IMPACTS THOSE HIGHS. A LOW DIGGING DOWN THE WEST COAST MONDAY IS
EXPECTED TO SEND SOUTHWESTERLY FLOW AND WARMER TEMPERATURES BACK TO
THE REGION. THIS COULD FETCH INTO A WEAK ATMOSPHERIC RIVER. IT'S
STILL A BIT PREMATURE TO LEAN INTO THIS, BUT FOR PLANNING PURPOSES
IT DOES LOOK LIKE WE COULD GET ANOTHER SHOT OF WINTER WEATHER
TUESDAY AS THIS SYSTEM DRAPES A FRONTAL BOUNDARY ACROSS THE REGION
AGAIN.
AVIATION /00Z TAFS THROUGH 00Z THURSDAY/
ISSUED AT 440 PM MST TUE FEB 17 2026
AVIATION PROBLEMS WILL CONTINUE TO CENTER AROUND THE STRONG WINDS
ACROSS THE REGION, LEADING TO LLWS AT MANY OF OUR TERMINALS. SURFACE
WINDS DO ABATE A BIT THIS MORNING, BUT WINDS ALOFT REMAIN STRONG.
CEILINGS AT MOUNTAIN SITES AND, INTERMITTENTLY, AT THE LOW VALLEYS
WILL STICK AROUND MVFR AND IFR BREAKPOINTS, AS SNOW SHOWERS CONTINUE
TO WORK THROUGH THE REGION TONIGHT AND WEDNESDAY. THIS WILL ALSO
HAMPER VISIBILITY INTERMITTENTLY TOO. SNOW WILL BEGIN TO TAPER
WEDNESDAY EVENING, BUT MOST TERMINALS WILL CLOSE OUT THIS PERIOD
UNDER BREAKPOINT CONDITIONS.
GJT WATCHES/WARNINGS/ADVISORIES
CO...WIND ADVISORY FROM 5 AM TO 5 PM MST WEDNESDAY FOR COZ001-002-
006>008-011-014-020>022.
WINTER STORM WARNING UNTIL 5 AM MST THURSDAY FOR COZ003-004-
009-010-012-013-017>019.
WINTER WEATHER ADVISORY UNTIL 5 AM MST THURSDAY FOR COZ005-023.
UT...WIND ADVISORY FROM 5 AM TO 5 PM MST WEDNESDAY FOR UTZ022-024-
027-029.
WINTER WEATHER ADVISORY UNTIL 5 AM MST THURSDAY FOR UTZ023-025-
028.
SHORT TERM...BGB
LONG TERM...LTB
AVIATION...TGJT
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