Alert archive / Colorado / Winter Storm Warnings in 2012
Winter Storm Warning 5, NWS Grand Junction, CO
NWS Grand Junction, CO issued this winter storm warning at Feb 21, 2012, 3:53 AM MST for 6 counties in Colorado. It was in force for 58 hr. 13 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Feb 21, 2012, 3:53 AM MST (10:53 UTC)
- Expired
- Feb 23, 2012, 2:00 PM MST
- In force
- 58 hr
- Issued by
- NWS Grand Junction, CO
Counties Eagle County, CO, Garfield County, CO, Moffat County, CO, Pitkin County, CO, Rio Blanco County, CO, Routt County, CO
The radar
The Grand Junction radar (KGJX), 114 km from the middle of the area, began a volume at 10:57 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 21, 5:00 AM MST | HEAVY SNOW 9 | Steamboat Springs, CO | 24 HOUR SNOWFALL AT STEAMBOAT SKI AREA AS OF 5 AM. |
| Feb 21, 7:00 AM MST | SNOW 6.1 | 1 Se Steamboat Springs, CO | 24 HOUR SNOWFALL WITH WATER EQUIVALENT OF 0.26 INCHES. |
| Feb 21, 7:25 PM MST | SNOW 8 | 1 Se Steamboat Springs, CO | SNOWFALL FROM 700 AM TO 725 PM |
| Feb 21, 10:25 PM MST | SNOW 10 | 1 Se Steamboat Springs, CO | SNOWFALL SINCE 7 AM...2 ADDITIONAL INCHES FROM 725 PM TO 1025 PM. |
| Feb 22, 4:44 AM MST | HEAVY SNOW 11 | Vail, CO | 24 HOUR SNOWFALL AT VAIL SKI AREA. |
| Feb 22, 5:33 AM MST | HEAVY SNOW 12 | Steamboat Springs, CO | 24 HOUR SNOWFALL AT STEAMBOAT SKI AREA AS OF 530 AM. |
| Feb 22, 6:00 AM MST | SNOW 6 | 1 Nw Clark, CO | 24 HOUR SNOWFALL WITH LIQUID EQUIVALENT OF 0.55 INCHES. |
| Feb 22, 7:25 AM MST | HEAVY SNOW 11.9 | 1 Se Steamboat Springs, CO | 24 HOUR SNOWFALL WITH LIQUID EQUIVALENT OF 0.91 INCHES. |
| Feb 23, 4:48 AM MST | HEAVY SNOW 12 | Vail, CO | 24 HOUR SNOWFALL AMOUNT AT VAIL SKI AREA. |
| Feb 23, 5:24 AM MST | HEAVY SNOW 0 | Vail, CO | I-70 EASTBOUND CLOSED AT MM180 NEAR VAIL DUE TO ADVERSE CONDITIONS. NO ESTIMATED REOPENING TIME |
| Feb 23, 5:33 AM MST | HEAVY SNOW 0 | Vail Pass, CO | I-70 EASTBOUND CLOSED FROM VAIL TO EISENHOWER TUNNEL...MM180 TO MM213. STARTED AT 533 AM. NO ESTIMATED REOPENING TIME. |
| Feb 23, 7:00 AM MST | SNOW 3.1 | 3 E Vail, CO | 24 HOUR SNOWFALL |
| Feb 23, 11:50 AM MST | SNOW 0 | Vail Pass, CO | I-70 EAST AND WEST BOUND LANES OVER VAIL PASS ARE OPEN. CHAINS REQUIRED ON COMMERCIAL VEHICLES EASTBOUND FROM MM178 TO SUMMIT.AVALANCHE WORK COMPLETED WESTBOUD ON VAIL PASS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Grand Junction, CO (KGJT), launched 00:00Z, 10.9 hours before the alert went out and 124 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1237 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
847 WWUS45 KGJT 211053 WSWGJT URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE GRAND JUNCTION CO 353 AM MST TUE FEB 21 2012 ...ANOTHER ROUND OF SNOWFALL FOR NORTHERN COLORADO... .NORTHWESTERLY FLOW HAS SET UP OVER THE ADVISORY AREA THIS EVENING AS MOISTURE MOVES IN FROM THE PACIFIC. THIS COMBINATION OF FAVORABLE OROGRAPHIC LIFT AND MOISTURE WILL KEEP SNOWFALL GOING THROUGH WEDNESDAY AFTERNOON. THE NORTHERN MOUNTAINS... FLATTOPS...AND STEAMBOAT SPRINGS ZONES ARE FAVORED IN THIS FLOW AND WILL SEE SIGNIFICANT ACCUMULATIONS BEFORE TAPERING OFF TO LIGHT SNOWFALL WEDNESDAY MORNING. COZ004-005-013-211900- /O.UPG.KGJT.WW.Y.0015.000000T0000Z-120222T1900Z/ /O.NEW.KGJT.WS.W.0005.120221T1053Z-120222T1900Z/ ELKHEAD AND PARK MOUNTAINS-UPPER YAMPA RIVER BASIN-FLATTOPS- INCLUDING THE CITIES OF...COLUMBINE...TOPONAS... STEAMBOAT SPRINGS AND VICINITY...BUFORD...TRAPPERS LAKE 353 AM MST TUE FEB 21 2012 ...WINTER STORM WARNING IN EFFECT UNTIL NOON MST WEDNESDAY... THE NATIONAL WEATHER SERVICE IN GRAND JUNCTION HAS ISSUED A WINTER STORM WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT UNTIL NOON MST WEDNESDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. * TIMING...PERIODS OF SNOW WILL OCCUR TODAY THOUGH SOME BREAKS IN SNOWFALL MAY OCCUR FROM TIME TO TIME BEFORE HEAVIER SNOW PICKS UP AGAIN THIS EVENING * SNOW ACCUMULATION...12 TO 18 INCHES OF NEW SNOW. * WINDS...NORTHWEST AT 30 TO 40 MPH WITH GUSTS TO 50 MPH OVER HIGHER RIDGETOPS. WINDS IN THE VALLEYS WILL BE FROM THE WEST AT 10 TO 15 MPH. * VISIBILITY...LESS THAN 1 MILE OCCASIONALLY LESS THAN 1/4 MILE IN HEAVIER SNOW AND BLOWING SNOW. * IMPACTS...SNOW AND ICE COVERED ROADS WILL MAKE TRAVEL DIFFICULT THROUGH THE PERIOD. BLOWING SNOW WILL ALSO DROP VISIBILITIES MAKING TRAVEL EVEN MORE TREACHEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND BLOWING SNOW ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$
10 follow-up statements
396 WWUS45 KGJT 211854 WSWGJT URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE GRAND JUNCTION CO 1154 AM MST TUE FEB 21 2012 ...ANOTHER ROUND OF SNOWFALL FOR NORTHERN COLORADO... .NORTHWESTERLY FLOW HAS SET UP OVER THE ADVISORY AREA THIS EVENING AS MOISTURE MOVES IN FROM THE PACIFIC. THIS COMBINATION OF FAVORABLE OROGRAPHIC LIFT AND MOISTURE WILL KEEP SNOWFALL GOING THROUGH WEDNESDAY AFTERNOON. THE NORTHERN MOUNTAINS... FLATTOPS...AND STEAMBOAT SPRINGS ZONES ARE FAVORED IN THIS FLOW AND WILL SEE SIGNIFICANT ACCUMULATIONS BEFORE TAPERING OFF TO LIGHT SNOWFALL WEDNESDAY MORNING. COZ004-005-013-220300- /O.CON.KGJT.WS.W.0005.000000T0000Z-120222T1900Z/ ELKHEAD AND PARK MOUNTAINS-UPPER YAMPA RIVER BASIN-FLATTOPS- INCLUDING THE CITIES OF...COLUMBINE...TOPONAS... STEAMBOAT SPRINGS AND VICINITY...BUFORD...TRAPPERS LAKE 1154 AM MST TUE FEB 21 2012 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MST WEDNESDAY... * TIMING...PERIODS OF SNOW WILL OCCUR TODAY THOUGH SOME BREAKS IN SNOWFALL MAY OCCUR FROM TIME TO TIME BEFORE HEAVIER SNOW PICKS UP AGAIN THIS EVENING * SNOW ACCUMULATION...12 TO 18 INCHES TOTAL OF NEW SNOW * WINDS...OVER THE MOUNTAINS....WESTERLY WINDS 15 TO 25 MPH WITH GUSTS TO 35 MPH TODAY WILL BECOME NORTHWEST TONIGHT WITH GUSTS TO 50 MPH OVER HIGHER RIDGETOPS. WINDS IN THE VALLEYS WILL BE FROM THE WEST AT 10 TO 15 MPH. * VISIBILITY...LESS THAN 1 MILE OCCASIONALLY LESS THAN 1/4 MILE IN HEAVIER SNOW AND BLOWING SNOW. * IMPACTS...SNOW AND ICE COVERED ROADS WILL MAKE TRAVEL DIFFICULT THROUGH THE PERIOD. BLOWING SNOW WILL ALSO DROP VISIBILITIES MAKING TRAVEL EVEN MORE TREACHEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND BLOWING SNOW ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ TGJT
207 WWUS45 KGJT 211950 CCA WSWGJT URGENT - WINTER WEATHER MESSAGE...CORRECTED NATIONAL WEATHER SERVICE GRAND JUNCTION CO 1249 PM MST TUE FEB 21 2012 CORRECTED WORDING IN THE OVERVIEW SECTION ...ANOTHER ROUND OF SNOWFALL FOR NORTHERN COLORADO... .MOIST NORTHWESTERLY FLOW HAS SET UP OVER WESTERN COLORADO AND WILL CONTINUE THROUGH TONIGHT. THIS COMBINATION OF FAVORABLE OROGRAPHIC LIFT AND MOISTURE WILL KEEP SNOWFALL GOING THROUGH WEDNESDAY AFTERNOON. THE NORTHERN MOUNTAINS... FLATTOPS...AND STEAMBOAT SPRINGS AREAS ARE FAVORED IN THIS FLOW AND WILL SEE SIGNIFICANT ACCUMULATIONS BEFORE TAPERING OFF TO LIGHT SNOWFALL WEDNESDAY MORNING. COZ004-005-013-220415- /O.CON.KGJT.WS.W.0005.000000T0000Z-120222T1900Z/ ELKHEAD AND PARK MOUNTAINS-UPPER YAMPA RIVER BASIN-FLATTOPS- INCLUDING THE CITIES OF...COLUMBINE...TOPONAS... STEAMBOAT SPRINGS AND VICINITY...BUFORD...TRAPPERS LAKE 1249 PM MST TUE FEB 21 2012 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MST WEDNESDAY... * TIMING...PERIODS OF SNOW WILL OCCUR TODAY THOUGH SOME BREAKS IN SNOWFALL MAY OCCUR FROM TIME TO TIME BEFORE HEAVIER SNOW PICKS UP AGAIN THIS EVENING * SNOW ACCUMULATION...12 TO 18 INCHES TOTAL OF NEW SNOW * WINDS...OVER THE MOUNTAINS....WESTERLY WINDS 15 TO 25 MPH WITH GUSTS TO 35 MPH TODAY WILL BECOME NORTHWEST TONIGHT WITH GUSTS TO 50 MPH OVER HIGHER RIDGETOPS. WINDS IN THE VALLEYS WILL BE FROM THE WEST AT 10 TO 15 MPH. * VISIBILITY...LESS THAN 1 MILE OCCASIONALLY LESS THAN 1/4 MILE IN HEAVIER SNOW AND BLOWING SNOW. * IMPACTS...SNOW AND ICE COVERED ROADS WILL MAKE TRAVEL DIFFICULT THROUGH THE PERIOD. BLOWING SNOW WILL ALSO DROP VISIBILITIES MAKING TRAVEL EVEN MORE TREACHEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND BLOWING SNOW ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ TGJT
695 WWUS45 KGJT 220104 WSWGJT URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE GRAND JUNCTION CO 604 PM MST TUE FEB 21 2012 ...SNOW WILL CONTINUE TO FALL OVER THE MOUNTAINS OF NORTHERN COLORADO THROUGH WEDNESDAY... .MOIST NORTHWESTERLY FLOW OVER NORTHWEST COLORADO WILL CONTINUE TO BRING PERIODS OF SNOW TO THE NORTHERN MOUNTAINS...FLATTOPS... AND STEAMBOAT SPRINGS AREAS. THE SNOW WILL BE HEAVY AT TIMES... ESPECIALLY ALONG WEST FACING SLOPES. SIGNIFICANT ACCUMULATIONS WILL OCCUR BY MIDDAY WEDNESDAY...BEFORE TAPERING OFF TO LIGHT SNOWFALL WEDNESDAY AFTERNOON. ANOTHER STORM WILL MOVE INTO THE REGION WEDNESDAY NIGHT AND THURSDAY...WITH ADDITIONAL HEAVY SNOWFALL POSSIBLE. COZ004-005-013-221200- /O.CON.KGJT.WS.W.0005.000000T0000Z-120222T1900Z/ ELKHEAD AND PARK MOUNTAINS-UPPER YAMPA RIVER BASIN-FLATTOPS- INCLUDING THE CITIES OF...COLUMBINE...TOPONAS... STEAMBOAT SPRINGS AND VICINITY...BUFORD...TRAPPERS LAKE 604 PM MST TUE FEB 21 2012 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MST WEDNESDAY... * TIMING...PERIODS OF SNOW...HEAVY AT TIMES...WILL CONTINUE THROUGH MIDDAY WEDNESDAY. * SNOW ACCUMULATION...ADDITIONAL SNOWFALL OF 6 TO 12 INCHES TONIGHT AND WEDNESDAY WITH STORM TOTAL SNOWFALL FROM 10 TO 20 INCHES. * WINDS...OVER THE MOUNTAINS....WEST TO NORTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 50 MPH OVER HIGHER RIDGE TOPS. WINDS IN THE VALLEYS WILL BE FROM THE WEST AT 10 TO 15 MPH. * VISIBILITY...LESS THAN 1/2 MILE AT TIMES IN HEAVY SNOW AND BLOWING SNOW. * IMPACTS...SNOW AND ICE COVERED ROADS WILL MAKE TRAVEL DIFFICULT THROUGH THE PERIOD. BLOWING SNOW WILL ALSO DROP VISIBILITIES MAKING TRAVEL EVEN MORE TREACHEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND BLOWING SNOW ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$
013 WWUS45 KGJT 221112 WSWGJT URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE GRAND JUNCTION CO 412 AM MST WED FEB 22 2012 ...SNOW WILL CONTINUE TO FALL OVER THE MOUNTAINS OF NORTHERN COLORADO THROUGH 11 AM THURSDAY... .A MOIST NORTHWESTERLY FLOW OVER NORTHWEST COLORADO WILL CONTINUE TO BRING PERIODS OF SNOW TO THE NORTHERN MOUNTAINS...FLATTOPS... AND STEAMBOAT SPRINGS AREAS THROUGH THURSDAY MORNING. THE SNOW WILL BE HEAVY AT TIMES... ESPECIALLY ALONG WEST FACING SLOPES. SIGNIFICANT ADDITIONAL ACCUMULATIONS WILL OCCUR BY MIDDAY THURSDAY...BEFORE TAPERING OFF TO LIGHT SNOWFALL THURSDAY AFTERNOON. COZ004-005-013-221915- /O.EXT.KGJT.WS.W.0005.000000T0000Z-120223T1800Z/ ELKHEAD AND PARK MOUNTAINS-UPPER YAMPA RIVER BASIN-FLATTOPS- INCLUDING THE CITIES OF...COLUMBINE...TOPONAS... STEAMBOAT SPRINGS AND VICINITY...BUFORD...TRAPPERS LAKE 412 AM MST WED FEB 22 2012 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 AM MST THURSDAY... * TIMING...LIGHTER SNOW ACCUMULATIONS ARE EXPECTED TODAY...BUT SNOW HEAVY AT TIMES WILL REDEVELOP TONIGHT THROUGH THURSDAY MORNING. * SNOW ACCUMULATION...ADDITIONAL SNOWFALL OF 6 TO 12 INCHES TONIGHT AND THURSDAY WITH STORM TOTAL SNOWFALL FROM 20 TO 30 INCHES. * WINDS...OVER THE MOUNTAINS....WEST TO NORTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 50 MPH OVER HIGHER RIDGE TOPS. WINDS IN THE VALLEYS WILL BE FROM THE WEST AT 10 TO 15 MPH. * VISIBILITY...LESS THAN 1/2 MILE AT TIMES IN HEAVY SNOW AND BLOWING SNOW. * IMPACTS...SNOW AND ICE COVERED ROADS WILL MAKE TRAVEL DIFFICULT THROUGH THE PERIOD. BLOWING SNOW WILL ALSO DROP VISIBILITIES MAKING TRAVEL EVEN MORE TREACHEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND BLOWING SNOW ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$
104
WWUS45 KGJT 221902
WSWGJT
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
1202 PM MST WED FEB 22 2012
...SNOW WILL CONTINUE TO FALL OVER THE MOUNTAINS OF NORTHERN
COLORADO THROUGH THURSDAY MORNING...
.A MOIST NORTHWEST FLOW WILL CONTINUE TO BRING PERIODS OF SNOW
OVER THE MOUNTAINS OF NORTHWEST COLORADO. THE SNOW WILL BECOME
HEAVY AT TIMES...ESPECIALLY AFTER MIDNIGHT TONIGHT AS A COLD FRONT
APPROACHES FROM THE NORTHWEST. BEHIND THE FRONT...SNOW WILL TAPER
OFF THURSDAY AFTERNOON AS COLD DRY AIR POURS INTO THE REGION.
COZ004-005-013-230315-
/O.CON.KGJT.WS.W.0005.000000T0000Z-120223T1800Z/
ELKHEAD AND PARK MOUNTAINS-UPPER YAMPA RIVER BASIN-FLATTOPS-
INCLUDING THE CITIES OF...COLUMBINE...TOPONAS...
STEAMBOAT SPRINGS AND VICINITY...BUFORD...TRAPPERS LAKE
1202 PM MST WED FEB 22 2012
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST
THURSDAY...
* TIMING...LIGHTER SNOW ACCUMULATIONS ARE EXPECTED TODAY...BUT
SNOW HEAVY AT TIMES WILL REDEVELOP TONIGHT THROUGH THURSDAY
MORNING.
* SNOW ACCUMULATION...ADDITIONAL SNOWFALL OF 6 TO 12 INCHES
TONIGHT AND THURSDAY WITH STORM TOTAL SNOWFALL FROM 20 TO 30
INCHES.
* WINDS...OVER THE MOUNTAINS....WEST TO NORTHWEST WINDS 20 TO 30
MPH WITH GUSTS TO 50 MPH OVER HIGHER RIDGE TOPS. WINDS IN THE
VALLEYS WILL BE FROM THE WEST AT 10 TO 15 MPH.
* VISIBILITY...LESS THAN 1/2 MILE AT TIMES IN HEAVY SNOW AND
BLOWING SNOW.
* IMPACTS...SNOW AND ICE COVERED ROADS WILL MAKE TRAVEL
DIFFICULT THROUGH THE PERIOD. BLOWING SNOW WILL ALSO DROP
VISIBILITIES MAKING TRAVEL EVEN MORE TREACHEROUS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS AND BLOWING SNOW ARE ALSO
POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.
&&
$$
COZ010-230315-
/O.NEW.KGJT.WW.Y.0016.120223T0100Z-120223T2100Z/
GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS-
INCLUDING THE CITIES OF...ASPEN...VAIL...SNOWMASS
1202 PM MST WED FEB 22 2012
...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
2 PM MST THURSDAY...
THE NATIONAL WEATHER SERVICE IN GRAND JUNCTION HAS ISSUED A
WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN
EFFECT FROM 6 PM THIS EVENING TO 2 PM MST THURSDAY.
* TIMING...SNOWFALL WILL INCREASE THROUGH THE NIGHT AND BE
HEAVY AT TIMES THURSDAY MORNING.
* SNOW ACCUMULATION...4 TO 8 INCHES WITH THE HIGHER AMOUNTS
EXPECTED NEAR VAIL PASS.
* WINDS...WEST WINDS 10 TO 20 MPH TONIGHT INCREASING TO NORTHWEST
15 TO 30 WITH GUSTS TO 45 MPH THURSDAY MORNING.
* VISIBILITY...DOWN TO 1/2 MILE IN SNOW AND BLOWING SNOW.
* IMPACTS...SNOW AND ICE COVERED ROADS WILL MAKE TRAVEL
DIFFICULT THROUGH THE PERIOD. BLOWING SNOW WILL ALSO DROP
VISIBILITIES MAKING TRAVEL EVEN MORE TREACHEROUS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND/OR
BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.
&&
$$
JOE353 WWUS45 KGJT 230233 WSWGJT URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE GRAND JUNCTION CO 733 PM MST WED FEB 22 2012 ...SNOW WILL CONTINUE TO FALL OVER THE MOUNTAINS OF NORTHERN COLORADO THROUGH THURSDAY MORNING... .A MOIST NORTHWEST FLOW WILL CONTINUE TO BRING PERIODS OF SNOW OVER THE MOUNTAINS OF NORTHWEST COLORADO. THE SNOW WILL BECOME HEAVY AT TIMES...ESPECIALLY AFTER MIDNIGHT TONIGHT AS A COLD FRONT APPROACHES FROM THE NORTHWEST. BEHIND THE FRONT...SNOW WILL TAPER OFF THURSDAY AFTERNOON AS COLD DRY AIR POURS INTO THE REGION. COZ004-005-013-231200- /O.CON.KGJT.WS.W.0005.000000T0000Z-120223T1800Z/ ELKHEAD AND PARK MOUNTAINS-UPPER YAMPA RIVER BASIN-FLATTOPS- INCLUDING THE CITIES OF...COLUMBINE...TOPONAS... STEAMBOAT SPRINGS AND VICINITY...BUFORD...TRAPPERS LAKE 733 PM MST WED FEB 22 2012 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THURSDAY... * TIMING...SNOW...HEAVY AT TIMES...WILL REDEVELOP LATE TONIGHT AND CONTINUE THROUGH THURSDAY MORNING. * SNOW ACCUMULATION...ADDITIONAL SNOWFALL OF 6 TO 12 INCHES TONIGHT AND THURSDAY WITH STORM TOTAL SNOWFALL FROM 20 TO 30 INCHES. * WINDS...OVER THE MOUNTAINS....WEST TO NORTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 50 MPH OVER HIGHER RIDGE TOPS. WINDS IN THE VALLEYS WILL BE FROM THE WEST AT 10 TO 15 MPH. * VISIBILITY...LESS THAN 1/2 MILE AT TIMES IN HEAVY SNOW AND BLOWING SNOW. * IMPACTS...SNOW AND ICE COVERED ROADS WILL MAKE TRAVEL DIFFICULT THROUGH THE PERIOD. BLOWING SNOW WILL ALSO DROP VISIBILITIES MAKING TRAVEL EVEN MORE TREACHEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND BLOWING SNOW ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ COZ010-231200- /O.CON.KGJT.WW.Y.0016.000000T0000Z-120223T2100Z/ GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS- INCLUDING THE CITIES OF...ASPEN...VAIL...SNOWMASS 733 PM MST WED FEB 22 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THURSDAY... * TIMING...SNOWFALL WILL INCREASE THROUGH THE NIGHT AND BE HEAVY AT TIMES THURSDAY MORNING. * SNOW ACCUMULATION...4 TO 8 INCHES WITH THE HIGHER AMOUNTS EXPECTED NEAR VAIL PASS. * WINDS...WEST WINDS 10 TO 20 MPH TONIGHT INCREASING TO NORTHWEST 15 TO 30 WITH GUSTS TO 45 MPH THURSDAY MORNING. * VISIBILITY...DOWN TO 1/2 MILE IN SNOW AND BLOWING SNOW. * IMPACTS...SNOW AND ICE COVERED ROADS WILL MAKE TRAVEL DIFFICULT THROUGH THE PERIOD. BLOWING SNOW WILL ALSO DROP VISIBILITIES MAKING TRAVEL EVEN MORE TREACHEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND/OR BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
169 WWUS45 KGJT 231006 WSWGJT URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE GRAND JUNCTION CO 306 AM MST THU FEB 23 2012 ...SNOW WILL CONTINUE TO FALL OVER THE MOUNTAINS OF NORTHERN COLORADO THROUGH THIS MORNING... .A MOIST NORTHWEST FLOW WILL CONTINUE TO BRING PERIODS OF SNOW OVER THE MOUNTAINS OF NORTHWEST COLORADO. THE SNOW WILL BECOME HEAVY AT TIMES...ESPECIALLY AS A COLD FRONT MOVES SOUTHWARD THROUGH THE REGION THIS MORNING. BEHIND THE FRONT...SNOW WILL TAPER OFF THIS AFTERNOON AS COLD DRY AIR POURS INTO THE REGION. COZ004-005-013-231800- /O.CON.KGJT.WS.W.0005.000000T0000Z-120223T1800Z/ ELKHEAD AND PARK MOUNTAINS-UPPER YAMPA RIVER BASIN-FLATTOPS- INCLUDING THE CITIES OF...COLUMBINE...TOPONAS... STEAMBOAT SPRINGS AND VICINITY...BUFORD...TRAPPERS LAKE 306 AM MST THU FEB 23 2012 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * TIMING...SNOW...HEAVY AT TIMES...WILL CONTINUE THROUGH THIS MORNING. * SNOW ACCUMULATION...ADDITIONAL SNOWFALL OF 4 TO 7 INCHES BY NOON TODAY WITH STORM TOTAL SNOWFALL FROM 20 TO 30 INCHES. * WINDS...OVER THE MOUNTAINS....WEST TO NORTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 50 MPH OVER HIGHER RIDGE TOPS. WINDS IN THE VALLEYS WILL BE FROM THE WEST AT 10 TO 15 MPH. * VISIBILITY...LESS THAN 1/2 MILE AT TIMES IN HEAVY SNOW AND BLOWING SNOW. * IMPACTS...SNOW AND ICE COVERED ROADS WILL MAKE TRAVEL DIFFICULT THROUGH THE PERIOD. BLOWING SNOW WILL ALSO DROP VISIBILITIES MAKING TRAVEL EVEN MORE TREACHEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND BLOWING SNOW ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ COZ010-231815- /O.CON.KGJT.WW.Y.0016.000000T0000Z-120223T2100Z/ GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS- INCLUDING THE CITIES OF...ASPEN...VAIL...SNOWMASS 306 AM MST THU FEB 23 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THIS AFTERNOON... * TIMING...SNOWFALL WILL INCREASE THIS MORNING BECOMING HEAVY AT TIMES. * SNOW ACCUMULATION...4 TO 7 INCHES WITH THE HIGHER AMOUNTS EXPECTED NEAR VAIL PASS. * WINDS...WEST WINDS 10 TO 20 MPH EARLY THIS MORNING...INCREASING TO NORTHWEST 15 TO 30 WITH GUSTS TO 45 MPH BY 0900 AM. * VISIBILITY...DOWN TO 1/2 MILE IN SNOW AND BLOWING SNOW. * IMPACTS...SNOW AND ICE COVERED ROADS WILL MAKE TRAVEL DIFFICULT THROUGH THE PERIOD. BLOWING SNOW WILL ALSO DROP VISIBILITIES MAKING TRAVEL EVEN MORE TREACHEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND/OR BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
814 WWUS45 KGJT 231315 WSWGJT URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE GRAND JUNCTION CO 615 AM MST THU FEB 23 2012 ...SNOW WILL CONTINUE TO FALL OVER THE MOUNTAINS OF NORTHERN COLORADO THROUGH THIS MORNING... .A MOIST NORTHWEST FLOW WILL CONTINUE TO BRING PERIODS OF SNOW OVER THE MOUNTAINS OF NORTHWEST COLORADO. THE SNOW WILL BECOME HEAVY AT TIMES...ESPECIALLY AS A COLD FRONT MOVES SOUTHWARD THROUGH THE REGION THIS MORNING. BEHIND THE FRONT...SNOW WILL TAPER OFF THIS AFTERNOON AS COLD DRY AIR POURS INTO THE REGION. COZ010-232100- /O.UPG.KGJT.WW.Y.0016.000000T0000Z-120223T2100Z/ /O.EXB.KGJT.WS.W.0005.000000T0000Z-120223T2100Z/ GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS- INCLUDING THE CITIES OF...ASPEN...VAIL...SNOWMASS 615 AM MST THU FEB 23 2012 ...WINTER STORM WARNING IN EFFECT UNTIL 2 PM MST THIS AFTERNOON... THE NATIONAL WEATHER SERVICE IN GRAND JUNCTION HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW AND STRONG GUSTY WINDS...WHICH IS IN EFFECT UNTIL 2 PM MST THIS AFTERNOON. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. * TIMING...SNOWFALL WILL INCREASE THIS MORNING BECOMING HEAVY AT TIMES. * SNOW ACCUMULATION...6 TO 10 INCHES WITH AMOUNTS OF 15 INCHES IN THE MOUNTAINS AROUND VAIL AND VAIL PASS. * WINDS...WEST WINDS 20 TO 40 MPH WITH FREQUENT GUSTS TO 60 MPH OVER EXPOSED AREAS AND MOUNTAIN PASSES. * VISIBILITY...DOWN TO 1/2 MILE IN SNOW AND BLOWING SNOW. WHITEOUT CONDITIONS OVER THE MOUNTAIN PASSES. * IMPACTS...SNOW AND ICE COVERED ROADS WILL MAKE TRAVEL DIFFICULT THROUGH THE PERIOD. BLOWING SNOW WILL ALSO DROP VISIBILITIES MAKING TRAVEL EVEN MORE TREACHEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND BLOWING SNOW ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ COZ004-005-013-231800- /O.CON.KGJT.WS.W.0005.000000T0000Z-120223T1800Z/ ELKHEAD AND PARK MOUNTAINS-UPPER YAMPA RIVER BASIN-FLATTOPS- INCLUDING THE CITIES OF...COLUMBINE...TOPONAS... STEAMBOAT SPRINGS AND VICINITY...BUFORD...TRAPPERS LAKE 615 AM MST THU FEB 23 2012 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * TIMING...SNOW...HEAVY AT TIMES...WILL CONTINUE THROUGH THIS MORNING. * SNOW ACCUMULATION...ADDITIONAL SNOWFALL OF 4 TO 7 INCHES BY NOON TODAY WITH STORM TOTAL SNOWFALL FROM 20 TO 30 INCHES. * WINDS...OVER THE MOUNTAINS....WEST TO NORTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 50 MPH OVER HIGHER RIDGE TOPS. WINDS IN THE VALLEYS WILL BE FROM THE WEST AT 10 TO 15 MPH. * VISIBILITY...LESS THAN 1/2 MILE AT TIMES IN HEAVY SNOW AND BLOWING SNOW. * IMPACTS...SNOW AND ICE COVERED ROADS WILL MAKE TRAVEL DIFFICULT THROUGH THE PERIOD. BLOWING SNOW WILL ALSO DROP VISIBILITIES MAKING TRAVEL EVEN MORE TREACHEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND BLOWING SNOW ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ COZ003-009-012-232100- /O.NEW.KGJT.WW.Y.0017.120223T1315Z-120223T2100Z/ ROAN AND TAVAPUTS PLATEAUS-GRAND AND BATTLEMENT MESAS- WEST ELK AND SAWATCH MOUNTAINS- INCLUDING THE CITIES OF...RIO BLANCO...SKYWAY...CRESTED BUTTE... TAYLOR PARK...MARBLE 615 AM MST THU FEB 23 2012 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 2 PM MST THIS AFTERNOON... THE NATIONAL WEATHER SERVICE IN GRAND JUNCTION HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW AND STRONG GUSTY WINDS...WHICH IS IN EFFECT UNTIL 2 PM MST THIS AFTERNOON. * TIMING...THROUGH 2 PM THIS AFTERNOON. * SNOW ACCUMULATION...SNOW ACCUMULATIONS OF 3 TO 6 INCHES CAN BE EXPECTED. * WINDS...STRONG NORTHWEST WINDS OF 20 TO 40 MPH WILL BE COMMON WITH OCCASIONAL GUSTS TO 60 MPH OVER EXPOSED AREAS AND MOUNTAIN PASSES. * VISIBILITY...POOR VISIBILITIES OF ONE HALF MILE OR LESS WILL BE FREQUENT THIS MORNING FROM BLOWING SNOW AND GUSTY WINDS. * IMPACTS...TRAVEL OVER THE MOUNTAIN PASSES WILL BE DIFFICULT THIS MORNING...GRADUALLY IMPROVING THIS AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND/OR BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
915 WWUS45 KGJT 231811 WSWGJT URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE GRAND JUNCTION CO 1111 AM MST THU FEB 23 2012 ...SNOW WILL CONTINUE TO FALL OVER THE MOUNTAINS OF NORTHERN COLORADO THROUGH THIS MORNING... .A MOIST NORTHWEST FLOW WILL CONTINUE TO BRING PERIODS OF SNOW OVER THE MOUNTAINS OF WESTERN COLORADO THROUGH THIS AFTERNOON. WEST TO NORTHWEST WINDS WILL BE STRONGEST OVER THE CENTRAL DIVIDE AREA BEHIND A COLD FRONT THAT PASSED THIS MORNING. THEREFORE POOR VISIBILITY IN BLOWING SNOW WILL MAKE TRAVEL TREACHEROUS. SNOW WILL TAPER OFF THIS AFTERNOON AS COLD DRY AIR POURS INTO THE REGION. COZ004-005-013-231915- /O.EXP.KGJT.WS.W.0005.000000T0000Z-120223T1800Z/ ELKHEAD AND PARK MOUNTAINS-UPPER YAMPA RIVER BASIN-FLATTOPS- INCLUDING THE CITIES OF...COLUMBINE...TOPONAS... STEAMBOAT SPRINGS AND VICINITY...BUFORD...TRAPPERS LAKE 1111 AM MST THU FEB 23 2012 ...WINTER STORM WARNING WILL EXPIRE AT 11 AM MST THIS MORNING... WHILE SNOW SHOWERS WILL CONTINUE INTO THE EVENING...ONLY LIGHT ADDITIONAL ACCUMULATIONS WILL BE EXPECTED. $$ COZ003-009-231915- /O.CAN.KGJT.WW.Y.0017.000000T0000Z-120223T2100Z/ ROAN AND TAVAPUTS PLATEAUS-GRAND AND BATTLEMENT MESAS- INCLUDING THE CITIES OF...RIO BLANCO...SKYWAY 1111 AM MST THU FEB 23 2012 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN GRAND JUNCTION HAS CANCELLED THE WINTER WEATHER ADVISORY. WHILE SCATTERED SNOW SHOWERS WILL REDEVELOP THIS AFTERNOON...LITTLE TO NO ADDITIONAL ACCUMULATIONS WILL BE EXPECTED. $$ COZ010-232100- /O.CON.KGJT.WS.W.0005.000000T0000Z-120223T2100Z/ GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS- INCLUDING THE CITIES OF...ASPEN...VAIL...SNOWMASS 1111 AM MST THU FEB 23 2012 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS AFTERNOON... * TIMING...SNOWFALL WILL CONTINUE INTO THIS AFTERNOON...ESPECIALLY ALONG THE CONTINENTAL DIVIDE. * SNOW ACCUMULATION...ONE TO 3 INCHES OF ADDITIONAL SNOWFALL BRINGING STORM TOTAL AMOUNTS UP TO 6 TO 10 INCHES WITH UP TO 15 INCHES IN THE MOUNTAINS AROUND VAIL AND VAIL PASS. DEEPER SNOW DRIFTS ARE EXPECTED. * WINDS...WEST WINDS 20 TO 40 MPH WITH GUSTS TO 60 MPH POSSIBLE OVER EXPOSED AREAS AND MOUNTAIN PASSES. * VISIBILITY...DOWN TO 1/2 MILE AT TIMES IN SNOW AND BLOWING SNOW. LOCAL WHITEOUT CONDITIONS OVER THE MOUNTAIN PASSES POSSIBLE. * IMPACTS...SNOW AND ICE COVERED ROADS...AND BLOWING SNOW WILL MAKE TRAVEL DIFFICULT INTO THE AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND BLOWING SNOW ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ COZ012-232100- /O.CON.KGJT.WW.Y.0017.000000T0000Z-120223T2100Z/ WEST ELK AND SAWATCH MOUNTAINS- INCLUDING THE CITIES OF...CRESTED BUTTE...TAYLOR PARK...MARBLE 1111 AM MST THU FEB 23 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THIS AFTERNOON... * TIMING...THROUGH 2 PM THIS AFTERNOON. * SNOW ACCUMULATION...ANOTHER 1 TO 2 INCHES OF NEW SNOWFALL CAN BE EXPECTED...BRINGING STORM TOTAL SNOW AMOUNTS UP TO 3 TO 6 INCHES...WITH LOCALLY DEEPER DRIFTS. * WINDS...STRONG NORTHWEST WINDS OF 20 TO 40 MPH WILL BE COMMON WITH OCCASIONAL GUSTS TO 60 MPH OVER EXPOSED AREAS AND MOUNTAIN PASSES. * VISIBILITY...POOR VISIBILITIES OF ONE HALF MILE OR LESS WILL BE POSSIBLE FROM BLOWING SNOW AND GUSTY WINDS. * IMPACTS...TRAVEL OVER THE MOUNTAIN PASSES WILL BE DIFFICULT INTO THIS AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND/OR BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
655 WWUS45 KGJT 232105 WSWGJT URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE GRAND JUNCTION CO 205 PM MST THU FEB 23 2012 COZ010-232215- /O.EXP.KGJT.WS.W.0005.000000T0000Z-120223T2100Z/ GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS- INCLUDING THE CITIES OF...ASPEN...VAIL...SNOWMASS 205 PM MST THU FEB 23 2012 ...WINTER STORM WARNING HAS EXPIRED... SNOW HAS DIMINISHED OVER THE AREA THIS AFTERNOON. WHILE SNOW SHOWERS WILL CONTINUE INTO THE EVENING...SHOWERS WILL GENERALLY BE LIGHT. LOCAL BLOWING SNOW MAY ALSO BE POSSIBLE FOR A TIME...BUT OVERALL CONDITIONS HAVE IMPROVED. $$ COZ012-232215- /O.EXP.KGJT.WW.Y.0017.000000T0000Z-120223T2100Z/ WEST ELK AND SAWATCH MOUNTAINS- INCLUDING THE CITIES OF...CRESTED BUTTE...TAYLOR PARK...MARBLE 205 PM MST THU FEB 23 2012 ...WINTER WEATHER ADVISORY HAS EXPIRED... SNOW HAS DIMINISHED OVER THE AREA THIS AFTERNOON. WHILE SNOW SHOWERS WILL CONTINUE INTO THE EVENING...SHOWERS WILL GENERALLY BE LIGHT. LOCAL BLOWING SNOW MAY ALSO BE POSSIBLE FOR A TIME...BUT OVERALL CONDITIONS HAVE IMPROVED. $$
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Junction, CO wrote its last area forecast discussion before this winter storm warning went out at Feb 21, 3:33 AM MST, 20 minutes earlier.
Area forecast discussion, Feb 21, 3:33 AM MST, 20 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
333 AM MST TUE FEB 21 2012
.UPDATE...
ISSUED AT 327 AM MST TUE FEB 21 2012
WEBCAMS AROUND STEAMBOAT SPRINGS STILL SHOW SNOW FALLING AROUND
TOWN WITH REPORTS OF 5 TO 6 INCHES OF NEW SNOW SINCE ROUGHLY 11
PM. WILL GO AHEAD AND UPGRADE ALL ADVISORIES TO WARNINGS WITH THE
CAVEAT THAT THERE WILL BE SOME TIMES OF LGT TO EVEN NO SNOW WITH
POSSIBLY SOME SUN PEEKING THROUGH THE CLOUDS BEFORE THE NEXT
DISTURBANCE PUSHES THROUGH LATER IN THE AFTN FIRING OFF MORE
SNOW.
&&
.SHORT TERM...(TODAY THROUGH WEDNESDAY)
ISSUED AT 308 AM MST TUE FEB 21 2012
IT HAS BEEN WELL ADVERTISED THAT AN INCREASINGLY MOIST WEST-
NORTHWEST FLOW WILL MOVE INTO THE REGION TODAY. THIS WILL ALLOW A
STRONG NORTHERN JET TO PULL A STEADY STREAM OF PACIFIC MOISTURE
INLAND ACROSS THE NORTHERN ROCKIES AND INTERMOUNTAIN WEST... AND
INTO NORTHERN COLORADO. THE AREA THAT WILL SEE THE MOST IMPACT
WILL BE THE NRN MTNS INCLUDING THE PARK/GORE AND FLATTOP MTNS AND
TO A LESSER DEGREE THE STEAMBOAT VALLEY. H7 WINDS WILL ALSO BE
INCREASING INTO THE 30-40KT RANGE WITH STRONGER GUSTS PROVIDING
GOOD FORCED OROGRAPHIC LIFT. RAN THE LOCAL SNOW MODEL WHICH
GENERATED NEAR WARNING CRITERIA SNOW AMOUNTS OVER ZNS 4 AND 13 WITH
LESSER AMOUNTS ELSEWHERE. BELIEVE THESE AMOUNTS ARE LIKELY
OVERDONE AS OVERALL DYNAMIC FORCING PRETTY WEAK EVEN AS THE JET
NOSES IN NRN CO TUESDAY NIGHT. FURTHERMORE...RELATIVELY STRONG
WARM ADVECTION WILL KEEP LAPSE RATES SOMEWHAT UNRESPONSIVE.
THE FIRST SURGE OF MOISTURE ACCOMPANIED BY WARM ADVECTION WAS
PRODUCING SOME LIGHT SNOW OVER THE NW PLATEAU EARLIER THIS MORNING
...WHICH THEN WORKED ITS WAY SOUTHWARD WHERE RIL AND MTJ PICKED
UP A TRACE OF SNOW. ALL OF THAT PRETTY MUCH OVER NOW. ON THE OTHER
HAND ZNS 4...5...AND 13 CONTINUE TO SNOW AND ARE CURRENTLY UNDER A
SNOW ADVISORY THROUGH NOON WEDNESDAY. THE NEXT AND STRONGER SURGE
OF MOISTURE AND WARM ADVECTION IS SEEN TONIGHT...AT THE SAME TIME
THE JET NOSES INTO NRN CO. TONIGHT IS EXPECTED TO BE THE PERIOD OF
THE HEAVIEST SNOWFALL. LITTLE CHANGE IS SEEN WEDNESDAY EXCEPT H7
TEMPS WARM TO AROUND -4 TO -5 C ACROSS THE NORTH...WITH WARMER
READINGS TO THE SOUTH. THIS HAS THE POTENTIAL TO PRODUCE RAIN OR
MIXED PHASE PCPN OVER THE LOWER ELEVATIONS OF THE NW PLATEAU
INCLUDING CAG...EEO...AND HDN. THUS THE REASONING FOR NOT
INCLUDING THEM IN ANY WINTER HIGHLIGHTS. OTHERWISE THE MTN ZONES
WILL CONTINUE TO SEE SNOWFALL...TAPERING OFF AFTER NOON WEDNESDAY.
.LONG TERM...(WEDNESDAY NIGHT THROUGH MONDAY)
ISSUED AT 308 AM MST TUE FEB 21 2012
NWLY FLOW AND UPPER LEVEL JET SUPPORT CONTINUES AS DOES SNOW FOR
THE NORTHERN AND CENTRAL MOUNTAINS AT START OF LONG-TERM. ALMOST
NO CHANGE TO FORECAST THOUGH DID RAISE POPS SOME FOR FLATTOPS...ELKHEAD
MTNS AND PARK/GORE RANGES. AS WILL HAVE BEEN THE CASE THROUGH THE
WEEK...MORE SNOWFALL ACCUMULATION IS EXPECTED BUT ACCUMULATIONS
WILL BE ON LOWSIDE TO START. THAT ALL CHANGES THURSDAY MORNING
THROUGH EARLY FRIDAY MORNING AS THE FINAL DISTURBANCE OF THE
SERIES PUSHES SWRD OVER THE CONTINENTAL DIVIDE. WHILE QG VERTICIAL
VELOCITIES ARE A BIT WEAK...THEY ARE THE STRONGEST SEEN ALL WEEK.
TEMPS WILL NOT BE AN ISSUE AS H7 TEMPS WILL DROP ALONG AND BEHIND
TROF KEEPING MTNS WELL INTO THE PREFFERED DENDRITIC GROWTH REGION.
THAT BEING SAID...MODELS SHOW A MODEST 4 TO 6 INCHES OF NEW SNOW.
SO...A RELATIVELY QUICK SHOT OF SNOWFALL IS EXPECTED BEFORE RIDGING
BUILDS IN FRIDAY MORNING PUSHING THE JET TO THE NORTH AND EAST.
THE RIDGE WILL GET FLATTENED QUICKLY SATURDAY MORNING AS ANOTHER
SYSTEM DIGS DOWN OVER PAC NW FORCING ANOTHER TROF OVER CWA BY SAT
EVENING. THIS WILL BE A VERY QUICK MOVING SYSTEM THOUGH SO
SNOWFALL ACCUMULTATONS OVER THE MTNS SHOULD BE FAIRLY LIGHT. THE
MAIN ENERGY FOR THIS SYSTEM WILL EXIT THE CWA QUICKLY...BY SUN
MORNING...ALLOWING SOME UPSLOPE FLOW TO KEEP SNOWSHOWERS GOING
OVER FAVORED NW FACING TERRAIN. REMAINDER OF LONG-TERM WILL SEE A
TRANSITORY RIDGE BUILD IN OVER CWA BRINGING DRY WX AND CLEARING
SKIES.
&&
.AVIATION...(FOR THE 12Z TAFS THROUGH 12Z EARLY WEDNESDAY MORNING)
ISSUED AT 308 AM MST TUE FEB 21 2012
A SERIES OF MOIST FAST MOVING UPPER LEVEL DISTURBANCES WILL MOVE
THROUGH NORTHEAST UTAH AND NORTHWEST COLORADO TODAY AND TONIGHT.
FAVORABLE OROGRAPHIC WINDS OFF 30 TO 40 KTS OUT OF THE WEST
NORTHWEST WILL RESULT IN AREAS OF SNOW OVER THE NRN MOUNTAINS AND
PLATEAUS OVER THE NEXT SEVERAL DAYS. EXPECT OCCASIONAL MVFR TO IFR
CIGS AND VSBYS NORTH AND EAST OF A LINE FROM KCAG TO KRIL TO KGUC.
ELSEWHERE...VFR CONDITIONS WILL PERSIST WITH LOCAL MTN OBSC. GUSTY
WINDS TO 50 KTS AND MECHANICAL TURBULENCE WILL BE WIDESPREAD
ACROSS THE CWA AS THE UPPER LEVEL JET SAGS INTO THE REGION.
&&
.GJT WATCHES/WARNINGS/ADVISORIES...
CO...WINTER WEATHER WARNINGS UNTIL NOON MST WEDNESDAY FOR
COZ004-005-013.
UT...NONE.
&&
UPDATE...TGR
SHORT TERM...MC
LONG TERM....TGR
AVIATION...MCHazardous weather outlook, Feb 21, 2:39 AM MST, 1 hour 14 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 239 AM MST TUE FEB 21 2012 COZ001>014-017>023-UTZ022>025-027>029-220945- LOWER YAMPA RIVER BASIN-CENTRAL YAMPA RIVER BASIN- ROAN AND TAVAPUTS PLATEAUS-ELKHEAD AND PARK MOUNTAINS- UPPER YAMPA RIVER BASIN-GRAND VALLEY-DEBEQUE TO SILT CORRIDOR- CENTRAL COLORADO RIVER BASIN-GRAND AND BATTLEMENT MESAS- GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS- CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN- WEST ELK AND SAWATCH MOUNTAINS-FLATTOPS- UPPER GUNNISON RIVER VALLEY-UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE- NORTHWEST SAN JUAN MOUNTAINS-SOUTHWEST SAN JUAN MOUNTAINS- PARADOX VALLEY/LOWER DOLORES RIVER- FOUR CORNERS/UPPER DOLORES RIVER-ANIMAS RIVER BASIN- SAN JUAN RIVER BASIN-SOUTHEAST UTAH-EASTERN UINTA MOUNTAINS- EASTERN UINTA BASIN-TAVAPUTS PLATEAU-ARCHES/GRAND FLAT- LA SAL AND ABAJO MOUNTAINS-CANYONLANDS/NATURAL BRIDGES- 239 AM MST TUE FEB 21 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY WINTER WEATHER ADVISORIES HAVE BEEN ISSUED FOR PORTIONS OF THE NORTHWESTERN COLORADO MOUNTAINS FOR PERIODS OF SNOW...GUSTY WINDS OVER HIGHER OR EXPOSED TERRAIN AND REDUCE VISIBILITY IN BLOWING SNOW. .DAYS TWO THROUGH SEVEN...TONIGHT THROUGH MONDAY MOUNTAIN SNOW AND WINTER WEATHER ADVISORIES WILL CONTINUE TONIGHT THROUGH NOON WEDNESDAY. THEN A STRONG AND UNSETTLED NORTHWEST FLOW WILL PRODUCE ON AGAIN OFF AGAIN SNOWFALL OVER THE NORTHERN AND CENTRAL MOUNTAINS THURSDAY THROUGH SUNDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
In the hours before
Local storm report, Feb 21, 3:36 AM MST, 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
336 AM MST TUE FEB 21 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0334 AM SNOW STEAMBOAT SPRINGS 40.48N 106.82W
02/21/2012 E6.0 INCH ROUTT CO PUBLIC
ESTIMATED SNOWFALL SO FAR SINCE 11 PM. STILL SNOWING.
&&
EVENT NUMBER GJT1200151
MALEKSAThe office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 11:36 PM MST | Winter Weather Advisory | GJT | Eagle, Garfield, Moffat, Rio Blanco, Routt | 4 hr |
Nearby
Winter Storm Warnings in Colorado, 2012Every winter storm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.