Alert archive / Colorado / High Wind Warnings in 2011
High Wind Warning 9, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this high wind warning at Nov 25, 2011, 11:45 AM MST for 5 counties in Colorado. It took effect at Nov 25, 2011, 9:00 PM MST. It was in force for 15 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Nov 25, 2011, 11:45 AM MST (18:45 UTC)
- In effect from
- Nov 25, 2011, 9:00 PM MST
- Expired
- Nov 26, 2011, 12:07 PM MST
- In force
- 15 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Logan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 150 km from the middle of the area, began a volume at 18:48 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.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 6.8 hours before the alert went out and 76 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
- 3040 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- -18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
864 WWUS75 KBOU 251845 NPWBOU URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 1145 AM MST FRI NOV 25 2011 ...STRONG WINDS OVER FAR NORTHEAST COLORADO TONIGHT AND SATURDAY... STRONG NORTHWEST WINDS ARE EXPECTED ACROSS THE NORTHEAST PLAINS OF COLORADO THIS EVENING FOLLOWING THE PASSAGE OF A COLD FRONT. NORTHWEST WINDS 25 TO 40 MPH CAN BE EXPECTED WITH SOME STRONGER GUSTS TO 60 MPH POSSIBLE. THE WIND IS EXPECTED TO DECREASE SOMEWHAT AFTER MIDNIGHT...THEN REINTENSIFY SATURDAY MORNING AND CONTINUE THROUGH SATURDAY AFTERNOON. COZ042-048-050-051-260245- /O.UPG.KBOU.HW.A.0008.111126T1200Z-111127T0000Z/ /O.NEW.KBOU.HW.W.0009.111126T0400Z-111127T0000Z/ NORTHEAST WELD COUNTY-LOGAN COUNTY-SEDGWICK COUNTY- PHILLIPS COUNTY- INCLUDING...BRIGGSDALE...GROVER...PAWNEE BUTTES...RAYMER... STONEHAM...CROOK...MERINO...STERLING...PEETZ...JULESBURG...OVID... SEDGWICK...AMHERST...HAXTUN...HOLYOKE 1145 AM MST FRI NOV 25 2011 ...HIGH WIND WARNING IN EFFECT FROM 9 PM THIS EVENING TO 5 PM MST SATURDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT FROM 9 PM THIS EVENING TO 5 PM MST SATURDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. * TIMING...NORTHWEST WINDS WILL INCREASE THIS EVENING FOLLOWING THE PASSAGE OF A COLD FRONT. THE WIND WILL DECREASE FOR A BRIEF PERIOD AFTER MIDNIGHT...THEN INCREASE AGAIN SATURDAY MORNING. * WINDS...NORTHWEST WINDS WILL INCREASE TO 25 TO 40 MPH...WITH A FEW STRONGER GUSTS TO 60 MPH POSSIBLE. * IMPACTS...HIGH PROFILE VEHICLES WILL EXPERIENCE STRONG CROSS WINDS AND COULD FLIP ESPECIALLY ALONG INTERSTATE 76. STRONG GUSTS WILL CREATE DANGEROUS DRIVING CONDITIONS... ESPECIALLY FOR CAMPERS...TRUCKS AND OTHER HIGH PROFILE VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A HIGH WIND WARNING MEANS THAT STRONG AND POTENTIALLY DAMAGING WINDS ARE EITHER OCCURRING OR HIGHLY LIKELY. && $$ COZ049-260245- /O.NEW.KBOU.HW.W.0009.111126T0400Z-111127T0000Z/ WASHINGTON COUNTY- INCLUDING...AKRON...COPE...LAST CHANCE...OTIS 1145 AM MST FRI NOV 25 2011 ...HIGH WIND WARNING IN EFFECT FROM 9 PM THIS EVENING TO 5 PM MST SATURDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT FROM 9 PM THIS EVENING TO 5 PM MST SATURDAY. * TIMING...NORTHWEST WINDS WILL INCREASE THIS EVENING FOLLOWING THE PASSAGE OF A COLD FRONT. THE WIND WILL DECREASE FOR A BRIEF PERIOD AFTER MIDNIGHT...THEN INCREASE AGAIN ON SATURDAY MORNING. * WINDS...NORTHWEST WINDS WILL INCREASE TO 25 TO 40 MPH...WITH A FEW STRONGER GUSTS TO 60 MPH POSSIBLE. * IMPACTS...HIGH PROFILE VEHICLES WILL EXPERIENCE STRONG CROSS WINDS AND COULD FLIP ESPECIALLY ALONG INTERSTATE 76. STRONG GUSTS WILL CREATE DANGEROUS DRIVING CONDITIONS... ESPECIALLY FOR CAMPERS...TRUCKS AND OTHER HIGH PROFILE VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A HIGH WIND WARNING MEANS THAT STRONG AND POTENTIALLY DAMAGING WINDS ARE EITHER OCCURRING OR HIGHLY LIKELY. && $$
4 follow-up statements
461 WWUS75 KBOU 260325 NPWBOU URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 825 PM MST FRI NOV 25 2011 ...STRONG WINDS OVER FAR NORTHEAST COLORADO TONIGHT AND SATURDAY... STRONG NORTHWEST WINDS ARE EXPECTED ACROSS THE NORTHEAST PLAINS OF COLORADO THIS EVENING FOLLOWING THE PASSAGE OF A COLD FRONT. NORTHWEST WINDS 25 TO 40 MPH CAN BE EXPECTED WITH SOME STRONGER GUSTS TO 60 MPH POSSIBLE. THE WIND IS EXPECTED TO DECREASE SOMEWHAT AFTER MIDNIGHT...THEN REINTENSIFY SATURDAY MORNING AND CONTINUE THROUGH SATURDAY AFTERNOON. COZ042-048>051-261130- /O.CON.KBOU.HW.W.0009.111126T0400Z-111127T0000Z/ NORTHEAST WELD COUNTY-LOGAN COUNTY-WASHINGTON COUNTY- SEDGWICK COUNTY-PHILLIPS COUNTY- INCLUDING THE CITIES OF...BRIGGSDALE...GROVER...PAWNEE BUTTES... RAYMER...STONEHAM...CROOK...MERINO...STERLING...PEETZ...AKRON... COPE...LAST CHANCE...OTIS...JULESBURG...OVID...SEDGWICK... AMHERST...HAXTUN...HOLYOKE 825 PM MST FRI NOV 25 2011 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY. * TIMING...NORTHWEST WINDS WILL INCREASE THIS EVENING FOLLOWING THE PASSAGE OF A COLD FRONT. THE WIND WILL DECREASE FOR A BRIEF PERIOD AFTER MIDNIGHT...THEN INCREASE AGAIN SATURDAY MORNING. * WINDS...NORTHWEST WINDS WILL INCREASE TO 25 TO 40 MPH...WITH A FEW STRONGER GUSTS TO 60 MPH POSSIBLE. * IMPACTS...HIGH PROFILE VEHICLES WILL EXPERIENCE STRONG CROSS WINDS AND COULD FLIP ESPECIALLY ALONG INTERSTATE 76. STRONG GUSTS WILL CREATE DANGEROUS DRIVING CONDITIONS... ESPECIALLY FOR CAMPERS...TRUCKS AND OTHER HIGH PROFILE VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A HIGH WIND WARNING MEANS THAT STRONG AND POTENTIALLY DAMAGING WINDS ARE EITHER OCCURRING OR HIGHLY LIKELY. && $$
903 WWUS75 KBOU 261017 NPWBOU URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 317 AM MST SAT NOV 26 2011 ...STRONG WINDS OVER FAR NORTHEAST COLORADO TODAY... STRONG NORTHWEST WINDS ARE EXPECTED ACROSS THE NORTHEAST PLAINS OF COLORADO TODAY ESPECIALLY FROM MID MORNING THROUGH EARLY AFTERNOON. NORTHWEST WINDS 25 TO 40 MPH CAN BE EXPECTED WITH SOME STRONGER GUSTS FROM 55 TO 60 MPH IN A FEW AREAS. THE WIND IS EXPECTED TO DECREASE SOMEWHAT AFTER 2 PM. COZ042-048>051-261830- /O.CON.KBOU.HW.W.0009.000000T0000Z-111127T0000Z/ NORTHEAST WELD COUNTY-LOGAN COUNTY-WASHINGTON COUNTY- SEDGWICK COUNTY-PHILLIPS COUNTY- INCLUDING THE CITIES OF...BRIGGSDALE...GROVER...PAWNEE BUTTES... RAYMER...STONEHAM...CROOK...MERINO...STERLING...PEETZ...AKRON... COPE...LAST CHANCE...OTIS...JULESBURG...OVID...SEDGWICK... AMHERST...HAXTUN...HOLYOKE 317 AM MST SAT NOV 26 2011 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. * TIMING...NORTHWEST WINDS WILL INCREASE BY MID MORNING AND CONTINUE THROUGH EARLY AFTERNOON. THE WINDS SHOULD SLOWLY DECREASE AFTER 2 PM. * WINDS...NORTHWEST WINDS 25 TO 40 MPH...WITH A FEW STRONGER GUSTS FROM 55 TO 60 MPH. * IMPACTS...HIGH PROFILE VEHICLES WILL EXPERIENCE STRONG CROSS WINDS AND COULD FLIP ESPECIALLY ALONG INTERSTATE 76. STRONG GUSTS WILL CREATE DANGEROUS DRIVING CONDITIONS... ESPECIALLY FOR CAMPERS...TRUCKS AND OTHER HIGH PROFILE VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A HIGH WIND WARNING MEANS THAT STRONG AND POTENTIALLY DAMAGING WINDS ARE EITHER OCCURRING OR HIGHLY LIKELY. && $$
175 WWUS75 KBOU 261820 NPWBOU URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 1120 AM MST SAT NOV 26 2011 ...STRONG WINDS OVER FAR NORTHEAST COLORADO TODAY... STRONG NORTHWEST WINDS ARE EXPECTED TO CONTINUE ACROSS THE NORTHEAST PLAINS OF COLORADO THROUGH EARLY AFTERNOON. NORTHWEST WINDS 25 TO 40 MPH CAN BE EXPECTED WITH SOME STRONGER GUSTS FROM 55 TO 60 MPH IN A FEW AREAS. THE WIND SHOULD START TO DECREASE IN INTENSITY AFTER 2 PM. COZ042-048>051-270000- /O.CON.KBOU.HW.W.0009.000000T0000Z-111127T0000Z/ NORTHEAST WELD COUNTY-LOGAN COUNTY-WASHINGTON COUNTY- SEDGWICK COUNTY-PHILLIPS COUNTY- INCLUDING THE CITIES OF...BRIGGSDALE...GROVER...PAWNEE BUTTES... RAYMER...STONEHAM...CROOK...MERINO...STERLING...PEETZ...AKRON... COPE...LAST CHANCE...OTIS...JULESBURG...OVID...SEDGWICK... AMHERST...HAXTUN...HOLYOKE 1120 AM MST SAT NOV 26 2011 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. * TIMING...GUSTY NORTHWEST WINDS WILL CONTINUE THROUGH EARLY AFTERNOON. THE WINDS START TO SLOWLY DECREASE AFTER 2 PM. * WINDS...NORTHWEST WINDS 25 TO 40 MPH...WITH A FEW STRONGER GUSTS FROM 55 TO 60 MPH. * IMPACTS...HIGH PROFILE VEHICLES WILL EXPERIENCE STRONG CROSS WINDS AND COULD FLIP ESPECIALLY ALONG INTERSTATE 76. STRONG GUSTS WILL CREATE DANGEROUS DRIVING CONDITIONS... ESPECIALLY FOR CAMPERS...TRUCKS AND OTHER HIGH PROFILE VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A HIGH WIND WARNING MEANS THAT STRONG AND POTENTIALLY DAMAGING WINDS ARE EITHER OCCURRING OR HIGHLY LIKELY. && $$
905 WWUS75 KBOU 261907 NPWBOU URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 1207 PM MST SAT NOV 26 2011 COZ042-048>051-262015- /O.CAN.KBOU.HW.W.0009.000000T0000Z-111127T0000Z/ NORTHEAST WELD COUNTY-LOGAN COUNTY-WASHINGTON COUNTY- SEDGWICK COUNTY-PHILLIPS COUNTY- INCLUDING THE CITIES OF...BRIGGSDALE...GROVER...PAWNEE BUTTES... RAYMER...STONEHAM...CROOK...MERINO...STERLING...PEETZ...AKRON... COPE...LAST CHANCE...OTIS...JULESBURG...OVID...SEDGWICK... AMHERST...HAXTUN...HOLYOKE 1207 PM MST SAT NOV 26 2011 ...HIGH WIND WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN DENVER HAS CANCELLED THE HIGH WIND WARNING. ALTHOUGH GUSTY WINDS ARE EXPECTED TO CONTINUE THROUGH THE AFTERNOON...THEY ARE NO LONGER EXPECTED TO REACH HIGH WIND CRITERIA. THEREFORE THE HIGH WIND WARNING HAS BEEN CANCELLED. $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 25, 3:38 AM MST | High Wind Watch | BOU | Logan, Phillips, Sedgwick, Weld | 8 hr |
| Nov 25, 1:34 PM MST | Fire Weather Watch | BOU | Adams, Arapahoe, Elbert, Lincoln, Logan, Morgan and 4 more | 14 hr |
Nearby
High Wind Warnings in Colorado, 2011Every high wind warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.