Alert archive / Colorado / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 90, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 22, 1996, 2:43 PM MDT for Boulder County, 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 counties it named.
The facts
- Issued
- Jun 22, 1996, 2:43 PM MDT (20:43 UTC)
- Expired
- Jun 22, 1996, 3:30 PM MDT
- In force
- 47 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
County Boulder County, CO
The radar
The Denver radar (KFTG), 77 km from the middle of the area, began a volume at 20:37 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, 8.7 hours before the alert went out and 183 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
- 240 J/kg
- Mixed-layer CIN
- -239 J/kg
- Mixed-layer LCL
- 1059 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 177 m²/s²
- 0-3 km storm-relative helicity
- 148 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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, Jun 22, 11:37 AM MDT, 3 hours 6 minutes before
COZ030-032>050-220600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1130 AM MDT SAT JUN 22 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: ANOTHER STORMY AFTERNOON AND EVENING IS EXPECTED ACROSS NORTHEAST AND NORTH CENTRAL COLORADO. SKIES WILL PARTIALLY CLEAR DURING THE AFTERNOON...ALLOWING ENOUGH SUNSHINE FOR TEMPERATURES TO WARM INTO THE 80S. DEWPOINTS WILL REMAIN IN THE UPPER 40S ALONG THE FRONT RANGE AND MID TO UPPER 50S ON THE PLAINS...SO THE ATMOSPHERE WILL BECOME MODERATELY UNSTABLE. THUNDERSTORMS WILL START TO MOVE OFF THE MOUNTAINS BY 2 PM. THE BEST THREAT OF SEVERE WEATHER THROUGH MID AFTERNOON WILL BE FROM SOUTHEAST OF DENVER NORTH TO NEAR CHEYENNE WHERE THERE WILL BE BETTER MOISTURE AND CONVERGING LOW LEVEL WINDS. THE STORMS WILL SPREAD EAST SLOWLY...WITH THE SEVERE WEATHER THREAT REACHING THE AREA EAST OF FORT MORGAN AFTER 5 PM. LARGE HAIL IS THE MAIN THREAT NEAR THE MOUNTAINS...ALTHOUGH STORMS COULD DROP UP TO HALF AN INCH OF RAIN IN A HALF HOUR CAUSING MINOR FLOODING. AS THE STORMS DEVELOP TO THE EAST THERE WILL BE A BETTER THREAT OF BOTH LARGE HAIL AND TORNADOES. SPOTTER ACTIVATION IS LIKELY NEAR THE MOUNTAINS BY 3 PM AND ON THE PLAINS BY EARLY EVENING. GIMMESTAD
Special weather statement, Jun 22, 11:38 AM MDT, 3 hours 5 minutes before
COZ030-032>050-230600- ...CORRECTED COMMS HEADER... SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1130 AM MDT SAT JUN 22 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: ANOTHER STORMY AFTERNOON AND EVENING IS EXPECTED ACROSS NORTHEAST AND NORTH CENTRAL COLORADO. SKIES WILL PARTIALLY CLEAR DURING THE AFTERNOON...ALLOWING ENOUGH SUNSHINE FOR TEMPERATURES TO WARM INTO THE 80S. DEWPOINTS WILL REMAIN IN THE UPPER 40S ALONG THE FRONT RANGE AND MID TO UPPER 50S ON THE PLAINS...SO THE ATMOSPHERE WILL BECOME MODERATELY UNSTABLE. THUNDERSTORMS WILL START TO MOVE OFF THE MOUNTAINS BY 2 PM. THE BEST THREAT OF SEVERE WEATHER THROUGH MID AFTERNOON WILL BE FROM SOUTHEAST OF DENVER NORTH TO NEAR CHEYENNE WHERE THERE WILL BE BETTER MOISTURE AND CONVERGING LOW LEVEL WINDS. THE STORMS WILL SPREAD EAST SLOWLY...WITH THE SEVERE WEATHER THREAT REACHING THE AREA EAST OF FORT MORGAN AFTER 5 PM. LARGE HAIL IS THE MAIN THREAT NEAR THE MOUNTAINS...ALTHOUGH STORMS COULD DROP UP TO HALF AN INCH OF RAIN IN A HALF HOUR CAUSING MINOR FLOODING. AS THE STORMS DEVELOP TO THE EAST THERE WILL BE A BETTER THREAT OF BOTH LARGE HAIL AND TORNADOES. SPOTTER ACTIVATION IS LIKELY NEAR THE MOUNTAINS BY 3 PM AND ON THE PLAINS BY EARLY EVENING. GIMMESTAD
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 2:43 PM MDT | Severe Thunderstorm Warning | BOU | Clear Creek, Gilpin, Jefferson | 47 min |
| Jun 22, 3:10 PM MDT | Tornado Warning | BOU | Adams, Weld | 35 min |
| Jun 22, 3:10 PM MDT | Tornado Warning | BOU | Boulder | 35 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.