Alert archive / Colorado / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 67, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 12, 1996, 2:05 PM MDT for Jefferson County, Colorado. It was in force for 25 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 12, 1996, 2:05 PM MDT (20:05 UTC)
- Expired
- Jun 12, 1996, 2:30 PM MDT
- In force
- 25 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
County Jefferson County, CO
The radar
The Denver radar (KFTG), 64 km from the middle of the area, began a volume at 20:05 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, 8.1 hours before the alert went out and 176 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
- 2 J/kg
- Mixed-layer CIN
- -280 J/kg
- Mixed-layer LCL
- 1873 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 99 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, Jun 12, 11:32 AM MDT, 2 hours 33 minutes before
COZ030-032>050-130600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1130 AM MDT WED JUN 12 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: SURFACE MOISTURE CONTINUES TO INCREASE ACROSS THE NORTHEAST COLORADO TODAY AS WINDS SHIFT TO THE NORTHEAST. IN ADDITION...A WEAK WEATHER DISTURBACE IS EXPECTED TO MOVE ACROSS THE AREA AFTER 1PM. AS A RESULT THUNDERSTORMS ARE AGAIN A POSSIBILITY THIS AFTERNOON. THE STORMS WILL DEVELOP OVER THE MOUNTAINS AND ALONG THE FOOTHILLS BY 1PM AND DRIFT SLOWLY ONTO THE PLAINS DURING THE AFTERNOON. SOME OF THE STORMS COULD BECOME SEVERE IN THE NORTHEAST...WITH LARGE HAIL AND WIND GUSTS TO 60 MPH THE MAIN THREAT. DUE TO THE SLOW MOVEMENT OF THE STORMS...SOME AREAS COULD RECEIVE HEAVY RAIN WHICH COULD CAUSE LOCAL FLOODING PROBLEMS. SPOTTER ACTIVITATION MAY BE REQUIRED AFTER 2PM TODAY. LESZCYNSKI
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 6:00 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 45 min |
| Jun 12, 4:45 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 45 min |
| Jun 12, 5:30 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert, Lincoln, Washington | 45 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.