Alert archive / Colorado / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 250, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Aug 9, 1996, 4:11 PM MDT for Morgan County, Weld County, Colorado. It was in force for 19 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 9, 1996, 4:11 PM MDT (22:11 UTC)
- Expired
- Aug 9, 1996, 4:30 PM MDT
- In force
- 19 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
Counties Morgan County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 79 km from the middle of the area, began a volume at 22:15 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, 10.2 hours before the alert went out and 95 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
- 2019 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Special weather statement, Aug 9, 11:14 AM MDT, 4 hours 57 minutes before
COZ030-032>050-100600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1010 AM MDT FRI AUG 9 1996 THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES ADAMS ARAPAHOE BOULDER CLEAR CREEK DENVER DOUGLAS ELBERT GILPIN GRAND JACKSON JEFFERSON LARIMER LINCOLN LOGAN MORGAN PARK PHILLIPS SEDGWICK SUMMIT WASHINGTON WELD SYNOPSIS: PLENTY OF LOW LEVEL MOISTURE WILL REMAIN ACROSS NORTHEAST COLORADO THIS AFTERNOON. AN UPPER LEVEL DISTURBANCE WILL ALSO MOVE ACROSS NORTH CENTRAL AND NORTHEAST COLORADO THIS AFTERNOON AND EARLY EVENING. THIS WILL HELP TO SPARK THUNDERSTORM DEVELOPMENT ACROSS THE FOOTHILLS BY THE NOON HOUR...AND THEN ACROSS THE PLAINS AFTER 2 PM. A SURFACE BOUNDARY FROM THE EASTERN PORTIONS OF THE DENVER METRO AREA NORTHWARD TO CHEYENNE MAY HELP TO FOCUS THUNDERSTORM DEVELOPMENT. PLENTY OF MOISTURE TO THE EAST OF THAT BOUNDARY WILL PROVIDE ENOUGH ENERGY FOR A FEW SEVERE THUNDERSTORMS. THE SEVERE STORMS ARE EXPECTED TO PRODUCE A BRIEF PERIOD OF LARGE HAIL AND DAMAGING WINDS. LONG-LIVED SEVERE STORMS ARE NOT LIKELY TODAY GIVENR ONLY A WEAK WIND SHEAR PROFILE IN THE ATMOSPHERE. SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON...ESPECIALLY EAST OF A LINE FROM CHEYENNE TO DENVER INTERNATIONAL AIRPORT. BARJENBRUCH
Special weather statement, Aug 9, 2:40 PM MDT, 1 hour 31 minutes before
COZ030-032>050-100600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 240 PM MDT FRI AUG 9 1996 THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES ADAMS ARAPAHOE BOULDER CLEAR CREEK DENVER DOUGLAS ELBERT GILPIN GRAND JACKSON JEFFERSON LARIMER LINCOLN LOGAN MORGAN PARK PHILLIPS SEDGWICK SUMMIT WASHINGTON WELD SYNOPSIS: A WELL DEVELOPED SURFACE BOUNDARY FROM KIOWA TO JUST EAST OF DENVER INTERNATIONAL AIRPORT AND THEN TO JUST SOUTHEAST OF CHEYENNE WILL PROVIDE A FOCUS FOR THUNDERSTORM DEVELOPMENT BETWEEN 3 AND 4 PM. A FEW OF THESE STORMS ARE EXPECTED TO BECOME SEVERE WITH A BRIEF PERIOD OF LARGE HAIL AND DAMAGING WINDS. AN ISOLATED WEAK TORNADO IS ALSO POSSIBLE WHERE OUTFLOW BOUNDARIES INTERACT WITH THE THUNDERSTORMS. THE RISK OF SEVERE STORMS WILL CONTINUE THROUGH THIS EVENING IN AREAS FARTHER EAST INCLUDING FORT MORGAN...LIMON...STERLING...AND AKRON. AT THIS TIME...NO SEVERE STORMS ARE EXPECTED IN THE FORT COLLINS TO DENVER CORRIDOR. SPOTTER ACTIVATION WILL LIKELY BE REQUIRED THIS AFTERNOON AND EVENING...ESPECIALLY ALONG AND EAST OF THE SURFACE BOUNDARY FROM CHEYENNE TO DENVER INTERNATIONAL AIRPORT TO KIOWA. BARJENBRUCH
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 3:53 PM MDT | Tornado Warning | BOU | Adams | 37 min |
| Aug 9, 4:07 PM MDT | Tornado Warning | BOU | Arapahoe | 23 min |
| Aug 9, 4:29 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe | 31 min |
| Aug 9, 5:40 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 40 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 1996Every severe thunderstorm warning in 1996
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.