Alert archive / Colorado / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 49, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Aug 2, 1986, 7:46 PM MDT for Boulder County, Colorado. It was in force for 59 min.
The area
The counties it named.
The facts
- Issued
- Aug 2, 1986, 7:46 PM MDT (01:46 UTC)
- Expired
- Aug 2, 1986, 8:45 PM MDT
- In force
- 59 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
County Boulder 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 00:00Z, 1.8 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
- 1026 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 2147 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KDEN 030146 SVRDEN COC001-005-013-031-059-030245- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DENVER CO 746 PM MDT SAT AUG 2 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 845 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTHEAST COLORADO...WESTERN ADAMS...WESTERN ARAPAHOE...SOUTHEAST BOULDER...DENVER AND EASTERN JEFFERSON THIS WARNING INCLUDES THE FOLLOWING TOWNS AND CITIES... DENVER METRO AREA AT 740 PM MDT RADAR INDICATED A SEVERE THUNDERSTORM 20 MILES NORTH NORTHWEST OF DOWNTOWN DENVER. THIS STORM HAS PRODUCED 1 1/2 INCH HAIL AT ERIE COLORADO. THE THUNDERSTORM IS MOVING SOUTH SOUTHEAST AT 25 MPH. IF SEVERE WEATHER APPROACHES YOUR AREA..GO TO A STURDY SHELTER AWAY FROM CREEK BEDS AND OTHER LOW AREAS PRONE TO FLOODING. 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 DENVER AT 361-0663. DO NOT CALL THIS NUMBER FOR INFORMATION. A SEVERE THUNDERSTORM WATCH REMAINS IN AFFECT FOR MOST OF EASTERN COLORADO UNTIL 9 PM MDT. GOODMAN
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 6:03 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 27 min |
| Aug 2, 6:45 PM MDT | Severe Thunderstorm Warning | BOU | Adams | 35 min |
| Aug 2, 7:06 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Larimer, Weld | 54 min |
| Aug 2, 7:46 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver, Jefferson | 59 min |
| Aug 2, 8:20 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 55 min |
| Aug 2, 9:23 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 52 min |
| Aug 2, 10:14 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Elbert | 46 min |
| Aug 3, 4:48 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Washington | 57 min |
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.