Alert archive / Colorado / Tornado Warnings in 1990
Tornado Warning 4, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 1, 1990, 5:50 PM MDT for Adams County, Weld County, Colorado. It was in force for 45 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 1, 1990, 5:50 PM MDT (23:50 UTC)
- Expired
- Jun 1, 1990, 6:35 PM MDT
- In force
- 45 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
Counties Adams 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 1, 6:05 PM MDT | Thunderstorm Wind 56 | Weld, CO | |
| Jun 1, 6:25 PM MDT | Tornado F0 | Adams, CO |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 11.8 hours before the alert went out and 104 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
- 3029 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 96 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 012353
TORDEN
COC001-123-020035-
BULLETIN...EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
550 PM MDT FRI JUN 01 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 632 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES OF NORTHEAST COLORADO:
NORTH CENTRAL ADAMS
SOUTH CENTRAL WELD
INCLUDING THE FOLLOWING TOWNS/CITIES:
EVANS..GARDEN CITY..GREELEY..HUDSON..KEENESBURG..KERSEY..
LA SALLE..PROSPECT VALLEY..AND ROGGEN
AT 550 PM MDT...A FUNNEL CLOUD CLOSE TO THE GROUND WAS REPORTED BY
THE PUBLIC NEAR HUDSON IN SOUTH CENTRAL WELD COUNTY...WHICH WAS VERIFIED
BY DOPPLER RADAR. MOVEMENT WAS TOWARDS THE EAST AT 20 MPH.
KEENSBURG...PROSPECT VALLEY...HUDSON...LOCHBUIE AND ROGGEN MAY BE
AFFECTED BY THIS STORM.
IN HOMES GO TO THE BASEMENT OR INTO A CLOSET OR BATHROOM.
IN SCHOOLS..HIGH RISES AND HOSPITALS GO TO AN INTERIOR
HALLWAY ON THE LOWEST FLOOR. IF IN MOBILE HOMES OR VEHICLES..
EVACUATE THEM AND GO TO A SUBSTANTIAL SHELTER. IF NO SHELTER
IS AVAILABLE..LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT.
IN ALL CASES..STAY AWAY FROM WINDOWS..DOORS AND OUTSIDE WALLS.
A TORNADO WATCH REMAINS IN EFFECT FOR EXTREME NORTHEAST COLORADO.
TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE
IN DENVER..OR CALL YOUR REPORT TO THE NATIONAL WEATHER SERVICE
AT 361-0663. DO NOT CALL THIS NUMBER FOR INFORMATION.
DULONG
LAT..LON 3990 10415 3990 10472 4052 10472 4052 10414The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 4:58 PM MDT | Tornado Warning | BOU | Boulder, Larimer, Weld | 47 min |
| Jun 1, 4:58 PM MDT | Tornado Warning | BOU | Adams, Jefferson | 47 min |
Nearby
Tornado Warnings in Colorado, 1990Every tornado warning in 1990Tornadoes in 1990
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.