Alert archive / Colorado / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 109, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Aug 4, 2008, 7:17 PM MDT for Phillips County, Colorado. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 4, 2008, 7:17 PM MDT (01:17 UTC)
- Expired
- Aug 4, 2008, 8:15 PM MDT
- In force
- 58 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
County Phillips County, CO
The radar
The Goodland radar (KGLD), 148 km from the middle of the area, began a volume at 01:19 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, 1.3 hours before the alert went out and 109 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
- 5 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 3660 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Denver/Boulder, CO wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 4, 3:10 PM MDT, 4 hours 7 minutes earlier.
Area forecast discussion, Aug 4, 3:10 PM MDT, 4 hours 7 minutes before
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</html>Hazardous weather outlook, Aug 4, 11:05 AM MDT, 8 hours 12 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 1105 AM MDT MON AUG 04 2008 COZ030>051-051200- JACKSON COUNTY BELOW 9000 FEET-WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET-GRAND AND SUMMIT COUNTIES BELOW 9000 FEET-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-CENTRAL AND SOUTHEAST PARK COUNTY-LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY-BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY-NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/ EAST BROOMFIELD COUNTY-ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY-CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY-SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY- 1105 AM MDT MON AUG 04 2008 ...A COLD FRONT IS ON THE WAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT A PLUME OF HIGH LEVEL MOISTURE SITS ACROSS COLORADO TODAY. SCATTERED THUNDERSTORMS WILL AGAIN DEVELOP OVER THE MOUNTAINS...BUT EXPECT A FEW HIGH BASED GUSTY STORMS WITH MORE WIND THAN RAIN ON THE PLAINS TODAY. AN UNSTABLE AND MOIST ENVIRONMENT IN NORTHEAST COLORADO WILL SUPPORT POSSIBLE SEVERE THUNDERSTORMS WITH HEAVY RAIN LATE THIS AFTERNOON AND LASTING LATE INTO THE NIGHT. THIS WILL BE MOSTLY EAST AND NORTHEAST OF FORT MORGAN. A COLD FRONT WILL ADVANCE SOUTH INTO NORTHEAST COLORADO THIS EVENING AND THROUGH THE REST OF THE PLAINS BY TUESDAY MORNING. LATER TONIGHT UPSLOPE CLOUDS AND SHOWERS WILL DEVELOP OVER THE PALMER DIVIDE AND URBAN CORRIDOR. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ON THE PLAINS TUESDAY WILL BE ASSOCIATED WITH SIGNIFICANTLY COOLER TEMPERATURES AND HIGHER HUMIDITIES. RAINFALL MOUNTS ON TUESDAY WILL GENERALLY BE LIGHT...ALTHOUGH THUNDERSTORMS OVER AND NEAR THE FRONT RANGE AND PALMER DIVIDE MAY PRODUCE BRIEF HEAVY RAINFALL IN THE AFTERNOON. DRIER AND MUCH WARMER CONDITIONS RETURN TO THE OUTLOOK AREA ON WEDNESDAY AS HIGH PRESSURE MOVES OVER THE AREA. BY WEDNESDAY NIGHT AND THURSDAY...SCATTERED SHOWERS AND THUNDERSTORMS WILL RETURN WITH THE DEVELOPMENT OF MOIST UPSLOPE FLOW AND WITH THE PASSAGE OF AN UPPER LEVEL WEATHER DISTURBANCE. WITH RATHER WEAK FLOW ALOFT AND ABUNDANT MOISTURE SOME OF THE STORMS WEDNESDAY NIGHT MAY PRODUCE LOCALLY HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. RTG/BAKER
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 11:08 PM MDT | Areal Flood Advisory | BOU | Phillips | 112 min |
| Aug 5, 2:05 PM MDT | Areal Flood Advisory | BOU | Douglas, Jefferson, Park | 85 min |
| Aug 5, 2:54 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 36 min |
| Aug 5, 3:25 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Douglas, Elbert | 35 min |
| Aug 5, 3:49 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver, Weld | 41 min |
| Aug 5, 4:31 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 46 min |
| Aug 5, 5:36 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 24 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 2008Every severe thunderstorm warning in 2008
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.