Alert archive / Colorado / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 5, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 7, 1986, 4:45 PM MDT for Larimer County, Weld County, Colorado. It was in force for 45 min.
The area
The counties it named.
The facts
- Issued
- Jun 7, 1986, 4:45 PM MDT (22:45 UTC)
- Expired
- Jun 7, 1986, 5:30 PM MDT
- In force
- 45 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
Counties Larimer County, CO, Weld County, CO
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 10.8 hours before the alert went out and 166 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
- 53 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 1031 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KDEN 072245 SVRDEN COC069-123-072330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DENVER CO 445 PM MDT SAT JUN 7 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 530 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTH CENTRAL COLORADO...SOUTHEAST LARIMER AND SOUTHERN WELD THIS WARNING INCLUDES THE FOLLOWING TOWNS AND CITIES... FORT COLLINS GREELEY LOVELAND AT 4:35PM RADAR REPORTED A SEVERE THUNDERSTORM ABOUT 10 SOUTHWEST OF GREELEY ALSO 1 INCH HAIL WAS REPORTED 5 MILES SOUTHWEST OF LOVELAND REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE HAIL...DAMAGING WINDS OF OVER 60 MPH...DEADLY LIGHTNING...AND HEAVY RAINS THAT CAN QUICKLY FLOOD A LOW LYING AREA. TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORTS TO THE NATIONAL WEATHER SERVICE IN DENVER...OR CALL YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN DLENVER AT 361-0663. DO NOT CALL THIS NUMBER FOR INFORMATION. HECKMAN
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 7, 4:20 PM MDT, 25 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 420 PM MDT SAT JUN 7 1986 ...SCATTERED FRONT RANGE THUNDERSTORMS... AT 415 PM MDT SCATTERED THUNDERSTORMS DOTTED THE FRONT RANGE FROM NEAR FORT COLLINS TO ABOUT 20 MILES SOUTH OF DENVER. WHILE NO SEVERE WEATHER IS EXPECTED...THE HEAVIEST OF THESE STORMS MAY PRODUCE SMALL HAIL AND STRONG GUSTY WINDS AS WELL AS BRIEF HEAVY RAIN. NO ONE STORM SHOULD LAST VERY LONG AS THESE ST7ORMS EXHIBIT A QUICK BUILDUP AND DECAY. THE STORMS SHOULD BE MOVING SLOWLY EASTWARD AWAY FROM THE FRONT RANGE BETWEEN NOW AND 6PM. KAPLAN
Nearby
Severe Thunderstorm Warnings in Colorado, 1986Every severe thunderstorm warning in 1986
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.