Alert archive / Colorado / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 1, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Apr 13, 2010, 5:08 PM MDT for Phillips County, Sedgwick County, Colorado. It was in force for 52 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
- Apr 13, 2010, 5:08 PM MDT (23:08 UTC)
- Expired
- Apr 13, 2010, 6:00 PM MDT
- In force
- 52 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Phillips County, CO, Sedgwick County, CO
The radar
The Goodland radar (KGLD), 162 km from the middle of the area, began a volume at 23:09 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 13, 11:48 AM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 11.1 hours before the alert went out and 121 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
- 1234 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 251 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 Apr 13, 3:10 PM MDT, 1 hour 58 minutes earlier.
Area forecast discussion, Apr 13, 3:10 PM MDT, 1 hour 58 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 1054 AM MDT TUE APR 13 2010 COZ030>051-141200- 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- 1054 AM MDT TUE APR 13 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS ARE EXPECTED AFTER 2 PM ON THE NORTHEAST COLORADO PLAINS...TO THE EAST OF A LINE BETWEEN FORT MORGAN AND LIMON. A FEW STORMS MAY BECOME SEVERE WITH DAMAGING WINDS TO 70 MPH AND HAIL UP TO ONE INCH IN DIAMETER. BEFORE THE THUNDERSTORMS DEVELOP...WINDS ACROSS THE PLAINS WILL CONTINUE OUT OF THE SOUTH AT 25 TO 35 MPH WITH GUSTS UP 45 MPH AT TIMES. CLOSER TO THE FOOTHILLS...WINDS WILL SHIFT WESTERLY AND INCREASE AGAIN TO 20 TO 35 MPH DURING THE AFTERNOON. OVER THE NORTH CENTRAL MOUNTAINS...SCATTERED SNOW SHOWERS WILL INCREASE DURING THE AFTERNOON. LOCAL ACCUMULATIONS UP TO 3 INCHES ARE POSSIBLE OVER HIGHER...WEST FACING SLOPES. GUSTY WINDS TO 50 MPH ARE ALSO POSSIBLE OVER THE HIGHER TERRAIN. THE STRONG WINDS AND THUNDERSTORMS ARE DUE TO A STRONG UPPER LEVEL DISTURBANCE MOVING OVER NORTHERN COLORADO AND WYOMING THROUGH THIS EVENING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY AFTER A MAINLY DRY DAY WEDNESDAY...A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS WILL RETURN FOR THURSDAY AND FRIDAY. FOR FRIDAY NIGHT AND SATURDAY THERE WILL BE A BETTER CHANCE OF SHOWERS AND A FEW THUNDERSTORMS OVER THE SOUTHERN FOOTHILLS...PALMER DIVIDE AND IN THE MOUNTAINS SOUTH OF I-70. SOME SNOW WILL OCCUR IN THE MOUNTAINS. BY SUNDAY DRIER AIR WILL MOVE INTO THE AREA WITH ONLY A SLIGHT CHANCE OF SHOWERS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED AFTER 2 PM ACROSS FAR NORTHEAST COLORADO. DANKERS/RPK
In the hours before
Local storm report, Apr 13, 2:57 PM MDT, 2 hours 11 minutes before
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</html>The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 2:33 PM MDT | High Wind Warning | BOU | Elbert, Lincoln, Phillips, Sedgwick, Washington | 4 hr |
Nearby
Severe Thunderstorm Warnings in Colorado, 2010Every severe thunderstorm warning in 2010
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.