Alert archive / Colorado / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 21, NWS Denver/Boulder, CO

May 22, 1994Adams County, Morgan County, Weld County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at May 22, 1994, 3:32 PM MDT for Adams County, Morgan County, Weld County, Colorado. It was in force for 28 min.

The area

The counties it named.

The facts

Issued
May 22, 1994, 3:32 PM MDT (21:32 UTC)
Expired
May 22, 1994, 4:00 PM MDT
In force
28 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

Counties Adams County, CO, Morgan County, CO, Weld County, CO

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 9.5 hours before the alert went out and 90 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.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 12:00Z on 1994-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 1994-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2424 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS1 KDEN 222134
SVRBOU
COC001-087-123-222200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
332 PM MDT SUN MAY 22 1994

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 400 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTIES

IN NORTHEASTERN COLORADO
     NORTH CENTRAL ADAMS...SOUTHWESTERN MORGAN AND SOUTH CENTRAL WELD

INCLUDING THE FOLLOWING LOCATIONS
     HOYT...KEENESBURG...MILTON RESERVOIR...PROSPECT VALLEY AND
     ROGGEN

AT 332 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM 10 MILES SOUTH OF PROSPECT VALLEY...OR ABOUT 38 MILES SOUTH
OF GREELEY.  THIS STORM IS CAPABLE OF PRODUCING WINDS IN EXCESS OF 60
MPH.

THE STORM WAS MOVING NORTHEAST AT 25 MPH.

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY
SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS.
REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING
HAIL...DAMAGING WINDS OVER 60 MPH...DEADLY LIGHTNING...AND VERY
HEAVY RAIN.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN DENVER.


LAT...LON 3990 10408 3988 10452 4024 10462 4018 10400

WOLF

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 22, 4:00 PM MDTSevere Thunderstorm WarningBOUMorgan, Weld30 min
May 22, 4:28 PM MDTSevere Thunderstorm WarningBOUMorgan, Weld32 min
May 22, 4:57 PM MDTSevere Thunderstorm WarningBOUMorgan, Weld33 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1994Every severe thunderstorm warning in 1994

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.