Alert archive / Colorado / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 74, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 26, 2012, 5:43 PM MDT for 6 counties in Colorado. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 26, 2012, 5:43 PM MDT (23:43 UTC)
- Expired
- Jun 26, 2012, 6:30 PM MDT
- In force
- 47 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Adams County, CO, Arapahoe County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Jefferson County, CO
The radar
The Denver radar (KFTG), 35 km from the middle of the area, began a volume at 23:45 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, 11.7 hours before the alert went out and 147 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
- 4991 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -37 m²/s²
- 0-3 km storm-relative helicity
- 7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
261 WUUS55 KBOU 262343 SVRBOU COC001-005-031-035-039-059-270030- /O.NEW.KBOU.SV.W.0074.120626T2343Z-120627T0030Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DENVER CO 543 PM MDT TUE JUN 26 2012 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL JEFFERSON COUNTY IN NORTHEAST COLORADO EXTREME NORTHWESTERN ELBERT COUNTY IN EAST CENTRAL COLORADO NORTHERN DOUGLAS COUNTY IN NORTHEAST COLORADO WESTERN ARAPAHOE COUNTY IN NORTHEAST COLORADO SOUTHWESTERN ADAMS COUNTY IN NORTHEAST COLORADO DENVER COUNTY IN NORTHEAST COLORADO * UNTIL 630 PM MDT * AT 543 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP TO ABOUT 60 MPH. THIS STORM WAS LOCATED 3 MILES SOUTHEAST OF CHATFIELD RESERVOIR...OR 15 MILES SOUTH OF DENVER...MOVING NORTHEAST AT 25 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CASTLE PINES...BUCKLEY AFB...WATKINS...THE PINERY...SURREY RIDGE... SHERIDAN...PARKER...MANILA VILLAGE...LOUVIERS...HIGHLANDS RANCH... GREENWOOD VILLAGE...CHATFIELD RESERVOIR...BEVERLY HILLS...ARAPAHOE PARK...SOUTHWESTERN DENVER INTERNATIONAL AIRPORT...CENTENNIAL... WHEAT RIDGE...SOUTHERN WESTMINSTER...LITTLETON...LAKEWOOD... ENGLEWOOD...DENVER...SOUTHWESTERN COMMERCE CITY...AURORA AND SOUTHEASTERN ARVADA. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN EXCESS OF 58 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN. && LAT...LON 3983 10511 3979 10449 3939 10469 3949 10524 TIME...MOT...LOC 2343Z 204DEG 24KT 3954 10502 WIND...HAIL 60MPH <.75IN $$
2 follow-up statements
448 WWUS55 KBOU 270005 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 605 PM MDT TUE JUN 26 2012 COC001-005-031-035-039-059-270030- /O.CON.KBOU.SV.W.0074.000000T0000Z-120627T0030Z/ JEFFERSON CO-ELBERT CO-DOUGLAS CO-ARAPAHOE CO-ADAMS CO-DENVER CO- 605 PM MDT TUE JUN 26 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MDT FOR DENVER...SOUTHWESTERN ADAMS...WESTERN ARAPAHOE...NORTHERN DOUGLAS...EXTREME NORTHWESTERN ELBERT AND EAST CENTRAL JEFFERSON COUNTIES... AT 603 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP TO ABOUT 60 MPH. THIS STORM WAS LOCATED OVER CHERRY HILLS VILLAGE...OR 7 MILES SOUTH OF DENVER...MOVING NORTHEAST AT 30 MPH. CENTENNIAL AIRPORT HAS REPORTED WIND GUSTS AROUND 50 MPH WITH THIS STORM. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CASTLE PINES...BUCKLEY AFB...WATKINS...THE PINERY...SURREY RIDGE... SHERIDAN...PARKER...MANILA VILLAGE...LOUVIERS...HIGHLANDS RANCH... GREENWOOD VILLAGE...CHATFIELD RESERVOIR...BEVERLY HILLS...ARAPAHOE PARK...SOUTHWESTERN DENVER INTERNATIONAL AIRPORT...CENTENNIAL...WHEAT RIDGE...SOUTHERN WESTMINSTER...LITTLETON...LAKEWOOD...ENGLEWOOD... DENVER...SOUTHWESTERN COMMERCE CITY...AURORA AND SOUTHEASTERN ARVADA. PRECAUTIONARY/PREPAREDNESS ACTIONS... STRONG AND DAMAGING WINDS ARE LIKELY FROM THIS STORM...BUT THERE WILL BE LITTLE RAIN. HOWEVER...THERE MAY BE AREAS OF REDUCED VISIBILITIES IN BLOWING DUST. TAKE COVER IN A STURDY STRUCTURE UNTIL THE STORM PASSES. && LAT...LON 3983 10511 3979 10449 3939 10469 3949 10524 TIME...MOT...LOC 0003Z 204DEG 24KT 3966 10495 WIND...HAIL 60MPH <.75IN $$
954 WWUS55 KBOU 270025 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 625 PM MDT TUE JUN 26 2012 COC001-005-031-035-039-059-270034- /O.EXP.KBOU.SV.W.0074.000000T0000Z-120627T0030Z/ JEFFERSON CO-ELBERT CO-DOUGLAS CO-ARAPAHOE CO-ADAMS CO-DENVER CO- 625 PM MDT TUE JUN 26 2012 ...THE SEVERE THUNDERSTORM WARNING FOR DENVER...SOUTHWESTERN ADAMS... WESTERN ARAPAHOE...NORTHERN DOUGLAS...EXTREME NORTHWESTERN ELBERT AND EAST CENTRAL JEFFERSON COUNTIES WILL EXPIRE AT 630 PM MDT... THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND IS NO LONGER EXPECTED TO PRODUCE SEVERE WEATHER. CENTENNIAL AIRPORT REPORTED A PEAK WIND GUST OF 51 MPH. LAT...LON 3983 10511 3979 10449 3939 10469 3949 10524 TIME...MOT...LOC 0024Z 204DEG 24KT 3979 10488 $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 5:23 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Jefferson | 22 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 2012Every severe thunderstorm 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.