Alert archive / Colorado / High Wind Watches in 2012
High Wind Watch 2, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this high wind watch at Feb 20, 2012, 4:25 AM MST for 10 counties in Colorado. It took effect at Feb 21, 2012, 6:00 AM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 20, 2012, 4:25 AM MST (11:25 UTC)
- In effect from
- Feb 21, 2012, 6:00 AM MST
- Expired
- Feb 21, 2012, 4:17 AM MST
- In force
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Clear Creek County, CO, Douglas County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Summit County, CO
The radar
The Denver radar (KFTG), 94 km from the middle of the area, began a volume at 11:26 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 00:00Z, 11.4 hours before the alert went out and 206 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
- 1844 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
036 WWUS75 KBOU 201125 NPWBOU URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 425 AM MST MON FEB 20 2012 ...WINDY CONDITIONS ALONG THE EASTERN SLOPES OF THE FRONT RANGE MOUNTAINS AND FOOTHILLS TUESDAY AND WEDNESDAY... .A JET MOVING TOWARD THE STATE WILL PRODUCE STRONG NORTHWEST FLOW WHICH WILL COMBINE WITH A STABLE AIRMASS AND STRENGTHENING SURFACE PRESSURE GRADIENT TO CREATE VERY WINDY CONDITIONS OVER THE HIGH COUNTRY EAST OF THE DIVIDE. WINDS HAVE THE POTENTIAL TO GUST TO 75 MPH ON TUESDAY...INCREASING TO 85 MPH ON WEDNESDAY. COZ033>036-201900- /O.NEW.KBOU.HW.A.0002.120221T1300Z-120223T1300Z/ SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET-LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- INCLUDING THE CITIES OF...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS... BERTHOUD PASS...BRECKENRIDGE...EAST SLOPES MOSQUITO RANGE... EAST SLOPES SOUTHERN GORE RANGE...EISENHOWER TUNNEL... INDIAN PEAKS...KENOSHA MOUNTAINS...MOUNT EVANS... WILLIAMS FORK MOUNTAINS...WINTER PARK...ESTES PARK...GLENDEVEY... NEDERLAND...RED FEATHER LAKES...BAILEY...CENTRAL CITY... EVERGREEN...GEORGETOWN...IDAHO SPRINGS...WESTCREEK 425 AM MST MON FEB 20 2012 ...HIGH WIND WATCH IN EFFECT FROM TUESDAY MORNING THROUGH LATE WEDNESDAY NIGHT... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A HIGH WIND WATCH...WHICH IS IN EFFECT FROM TUESDAY MORNING THROUGH LATE WEDNESDAY NIGHT. * TIMING...WINDS WILL INCREASE JUST AFTER SUNRISE TUESDAY MORNING AND STEADILY INCREASE THROUGH WEDNESDAY EVENING BEFORE DECREASING THROUGH THE WEDNESDAY NIGHT. * WINDS...GUSTS UP TO 75 MPH POSSIBLE ON TUESDAY...INCREASING TO 85 MPH POSSIBLE ON WEDNESDAY. THESE STRONG WINDS WILL BE CONFINED TO THE EASTERN SLOPES OF THE FRONT RANGE MOUNTAINS AND FOOTHILLS WITH LIGHTER WINDS WEST OF THE CONTINENTAL DIVIDE. * IMPACTS...THESE STRONG WINDS MAY CAUSE AREAS OF BLOWING AND DRIFTING SNOW EAST OF THE DIVIDE AND OVER THE HIGHER FOOTHILLS...REDUCING VISIBILITIES AND CREATING HAZARDOUS DRIVING CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A HIGH WIND WATCH MEANS THAT STRONG AND POTENTIALLY DAMAGING WINDS MAY OCCUR. PERSONS IN THE WATCH AREA SHOULD REMAIN ALERT TO THE POSSIBILITY OF HIGH WINDS AND BE PREPARED TO TAKE ACTION SHOULD HIGH WINDS DEVELOP. && $$
3 follow-up statements
999 WWUS75 KBOU 202255 NPWBOU URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 355 PM MST MON FEB 20 2012 ...WINDY CONDITIONS EXPECTED ALONG THE EASTERN SLOPES OF THE FRONT RANGE MOUNTAINS AND FOOTHILLS TUESDAY AND WEDNESDAY... .AN UPPER LEVEL JET STREAM MOVING TOWARD COLORADO IS EXPECTED TO PRODUCE STRONG NORTHWEST FLOW ALOFT OVER THE NEXT COUPLE DAYS. THIS WILL COMBINE WITH A STABLE AIRMASS AND STRENGTHENING SURFACE PRESSURE GRADIENT TO CREATE VERY WINDY CONDITIONS OVER THE HIGH COUNTRY EAST OF THE DIVIDE. IT IS POSSIBLE THAT WINDS WILL GUST TO 75 MPH ON TUESDAY...INCREASING TO 85 MPH ON WEDNESDAY. COZ033>036-210700- /O.CON.KBOU.HW.A.0002.120221T1300Z-120223T1300Z/ SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET-LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- INCLUDING THE CITIES OF...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS... BERTHOUD PASS...BRECKENRIDGE...EAST SLOPES MOSQUITO RANGE... EAST SLOPES SOUTHERN GORE RANGE...EISENHOWER TUNNEL... INDIAN PEAKS...KENOSHA MOUNTAINS...MOUNT EVANS... WILLIAMS FORK MOUNTAINS...WINTER PARK...ESTES PARK...GLENDEVEY... NEDERLAND...RED FEATHER LAKES...BAILEY...CENTRAL CITY... EVERGREEN...GEORGETOWN...IDAHO SPRINGS...WESTCREEK 355 PM MST MON FEB 20 2012 ...HIGH WIND WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH LATE WEDNESDAY NIGHT... * TIMING...WINDS ARE EXPECTED INCREASE JUST AFTER SUNRISE TUESDAY MORNING AND STEADILY INCREASE THROUGH WEDNESDAY EVENING BEFORE DECREASING THROUGH THE WEDNESDAY NIGHT. * WINDS...GUSTS UP TO 75 MPH WILL BE POSSIBLE ON TUESDAY... INCREASING TO 85 MPH ON WEDNESDAY. THESE STRONG WINDS WILL BE CONFINED TO THE EASTERN SLOPES OF THE FRONT RANGE MOUNTAINS AND FOOTHILLS WITH LIGHTER WINDS WEST OF THE CONTINENTAL DIVIDE. * IMPACTS...THESE STRONG WINDS MAY CAUSE AREAS OF BLOWING AND DRIFTING SNOW EAST OF THE DIVIDE AND OVER THE HIGHER FOOTHILLS...REDUCING VISIBILITIES AND CREATING HAZARDOUS DRIVING CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A HIGH WIND WATCH MEANS THAT STRONG AND POTENTIALLY DAMAGING WINDS MAY OCCUR. PERSONS IN THE WATCH AREA SHOULD REMAIN ALERT TO THE POSSIBILITY OF HIGH WINDS AND BE PREPARED TO TAKE ACTION SHOULD HIGH WINDS DEVELOP. && $$
675 WWUS75 KBOU 210332 NPWBOU URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 832 PM MST MON FEB 20 2012 ...WINDY CONDITIONS EXPECTED ALONG THE EASTERN SLOPES OF THE FRONT RANGE MOUNTAINS AND FOOTHILLS TUESDAY AND WEDNESDAY... .AN UPPER LEVEL JET STREAM MOVING TOWARD COLORADO IS EXPECTED TO PRODUCE STRONG NORTHWEST FLOW ALOFT OVER THE NEXT COUPLE DAYS. THIS WILL COMBINE WITH A STABLE AIRMASS AND STRENGTHENING SURFACE PRESSURE GRADIENT TO CREATE VERY WINDY CONDITIONS OVER THE HIGH COUNTRY EAST OF THE DIVIDE. IT IS POSSIBLE THAT WINDS WILL GUST TO 75 MPH ON TUESDAY...INCREASING TO 85 MPH ON WEDNESDAY. COZ033>036-211145- /O.CON.KBOU.HW.A.0002.120221T1300Z-120223T1300Z/ SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET-LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- INCLUDING THE CITIES OF...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS... BERTHOUD PASS...BRECKENRIDGE...EAST SLOPES MOSQUITO RANGE... EAST SLOPES SOUTHERN GORE RANGE...EISENHOWER TUNNEL... INDIAN PEAKS...KENOSHA MOUNTAINS...MOUNT EVANS... WILLIAMS FORK MOUNTAINS...WINTER PARK...ESTES PARK...GLENDEVEY... NEDERLAND...RED FEATHER LAKES...BAILEY...CENTRAL CITY... EVERGREEN...GEORGETOWN...IDAHO SPRINGS...WESTCREEK 832 PM MST MON FEB 20 2012 ...HIGH WIND WATCH REMAINS IN EFFECT FROM 6 AM MST TUESDAY THROUGH LATE WEDNESDAY NIGHT... * TIMING...WINDS ARE EXPECTED INCREASE JUST AFTER SUNRISE TUESDAY MORNING AND STEADILY INCREASE THROUGH WEDNESDAY EVENING BEFORE DECREASING THROUGH THE WEDNESDAY NIGHT. * WINDS...GUSTS UP TO 75 MPH WILL BE POSSIBLE ON TUESDAY... INCREASING TO 85 MPH ON WEDNESDAY. THESE STRONG WINDS WILL BE CONFINED TO THE EASTERN SLOPES OF THE FRONT RANGE MOUNTAINS AND FOOTHILLS WITH LIGHTER WINDS WEST OF THE CONTINENTAL DIVIDE. * IMPACTS...THESE STRONG WINDS MAY CAUSE AREAS OF BLOWING AND DRIFTING SNOW EAST OF THE DIVIDE AND OVER THE HIGHER FOOTHILLS...REDUCING VISIBILITIES AND CREATING HAZARDOUS DRIVING CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A HIGH WIND WATCH MEANS THAT STRONG AND POTENTIALLY DAMAGING WINDS MAY OCCUR. PERSONS IN THE WATCH AREA SHOULD REMAIN ALERT TO THE POSSIBILITY OF HIGH WINDS AND BE PREPARED TO TAKE ACTION SHOULD HIGH WINDS DEVELOP. && $$
626 WWUS75 KBOU 211117 NPWBOU URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 417 AM MST TUE FEB 21 2012 ...WINDY CONDITIONS EXPECTED ALONG THE EASTERN SLOPES OF THE FRONT RANGE MOUNTAINS...FOOTHILLS AND ADJACENT PLAINS TONIGHT AND WEDNESDAY... .AN UPPER LEVEL JET STREAM MOVING TOWARD COLORADO IS EXPECTED TO PRODUCE STRONG NORTHWEST FLOW ALOFT OVER THE NEXT COUPLE DAYS. THIS WILL COMBINE WITH A STABLE AIRMASS AND STRENGTHENING SURFACE PRESSURE GRADIENT TO CREATE STRONG AND POTENTIALLY DAMAGING WINDS OVER THE HIGH COUNTRY EAST OF THE DIVIDE WHICH WILL BE EXPECTED TO MOVE DOWN INTO THE FOOTHILLS AND THE NEARBY PLAINS. WIND GUSTS TO AROUND 80 MPH CAN BE EXPECTED...ALTHOUGH A FEW WIND PRONE AREAS COULD SEE GUSTS NEAR 100 MPH EARLY WEDNESDAY MORNING. COZ033>036-212000- /O.UPG.KBOU.HW.A.0002.120221T1300Z-120223T1300Z/ /O.NEW.KBOU.HW.W.0005.120222T0600Z-120223T1200Z/ SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET-LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- INCLUDING THE CITIES OF...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS... BERTHOUD PASS...BRECKENRIDGE...EAST SLOPES MOSQUITO RANGE... EAST SLOPES SOUTHERN GORE RANGE...EISENHOWER TUNNEL... INDIAN PEAKS...KENOSHA MOUNTAINS...MOUNT EVANS... WILLIAMS FORK MOUNTAINS...WINTER PARK...ESTES PARK...GLENDEVEY... NEDERLAND...RED FEATHER LAKES...BAILEY...CENTRAL CITY... EVERGREEN...GEORGETOWN...IDAHO SPRINGS...WESTCREEK 417 AM MST TUE FEB 21 2012 ...HIGH WIND WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 AM MST THURSDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT FROM 11 PM THIS EVENING TO 5 AM MST THURSDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. * TIMING...WINDS ARE EXPECTED TO INCREASE JUST AFTER SUNSET TONIGHT AND REMAIN STRONG THROUGH WEDNESDAY NIGHT BEFORE DECREASING BY THURSDAY MORNING. * WINDS...PEAK GUSTS TO BETWEEN 80 AND 100 MPH. THESE STRONGEST WINDS WILL BE CONFINED TO THE EASTERN SLOPES OF THE FRONT RANGE MOUNTAINS AND FOOTHILLS WITH LIGHTER WINDS WEST OF THE CONTINENTAL DIVIDE. * IMPACTS...THESE STRONG WINDS WILL CAUSE AREAS OF BLOWING AND DRIFTING SNOW ALONG AND EAST OF THE DIVIDE AND OVER THE HIGHER FOOTHILLS...REDUCING VISIBILITIES AND CREATING HAZARDOUS DRIVING CONDITIONS. * OTHER IMPACTS...STRONG WINDS MAY ALSO DOWN SOME TREES AND PRODUCE SCATTERED POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A HIGH WIND WARNING MEANS THAT STRONG AND POTENTIALLY DAMAGING WINDS ARE EITHER OCCURRING OR HIGHLY LIKELY. IN ADDITION TO POWERFUL CROSSWINDS...DRIVERS SHOULD ALSO ANTICIPATE AREAS OF BLOWING SNOW THAT WILL REDUCE VISIBILITY TO NEAR ZERO CAUSING BRIEF WHITEOUT CONDITIONS. && $$ COZ038-039-212000- /O.NEW.KBOU.HW.W.0005.120222T0600Z-120223T1200Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY- INCLUDING THE CITIES OF...FORT COLLINS...HEREFORD...LOVELAND... NUNN...ARVADA...BOULDER...GOLDEN...LAKEWOOD...LONGMONT 417 AM MST TUE FEB 21 2012 ...HIGH WIND WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 AM MST THURSDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT FROM 11 PM THIS EVENING TO 5 AM MST THURSDAY. * TIMING...WINDS ARE EXPECTED TO INCREASE JUST AFTER SUNSET TONIGHT AND REMAIN STRONG THROUGH WEDNESDAY NIGHT BEFORE DECREASING BEFORE DAYBREAK THURSDAY. * WINDS...GUSTS BETWEEN 75 AND 85 MPH. THESE STRONG WINDS WILL BE FOUND CLOSE TO THE BASE OF THE FOOTHILLS WITH LIGHTER WINDS FARTHER EAST TOWARD I-25. * IMPACTS...THESE STRONG WINDS MAY CAUSE HAZARDOUS DRIVING CONDITIONS FOR HIGH PROFILE VEHICLES NEAR THE BASE OF THE FOOTHILLS...ESPECIALLY ALONG HIGHWAY 93 BETWEEN GOLDEN AND BOULDER...U.S. 36 BETWEEN BROOMFIELD AND LYONS...AS WELL AS UP BY CARTER LAKE. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A HIGH WIND WARNING MEANS THAT STRONG AND POTENTIALLY DAMAGING WINDS ARE EITHER OCCURRING OR HIGHLY LIKELY. RESIDENTS IN THE WARNING AREA ARE URGED TO BRING INDOORS ANY LOOSE ITEMS SUCH AS GARBAGE CANS AND PATIO FURNITURE THAT MAY BE BLOWN ABOUT BY THE STRONG WINDS. && $$ KRIEDERMAN/BARJENBRUCH
Nearby
High Wind Watches in Colorado, 2012Every high wind watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.