Alert archive / Colorado / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 21, NWS Denver/Boulder, CO

May 29, 1993Boulder County, Larimer County, Weld County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at May 29, 1993, 2:38 PM MDT for Boulder County, Larimer County, Weld County, Colorado. It was in force for 17 min.

The area

The counties it named.

The facts

Issued
May 29, 1993, 2:38 PM MDT (20:38 UTC)
Expired
May 29, 1993, 2:55 PM MDT
In force
17 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

Counties Boulder County, CO, Larimer County, CO, Weld County, CO

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 8.6 hours before the alert went out and 169 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 1993-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLLFCEL10008507005003002001001 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 1993-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.193958Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1340 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
10 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 292039
SVRBOU
COC069-013-123-292115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
238 PM MDT SAT MAY 29 1993

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 315 PM MDT FOR PEOPLE IN
THE FOLLOWING COUNTIES:

IN NORTH CENTRAL COLORADO
     SOUTHEASTERN LARIMER

IN NORTHEASTERN COLORADO
     NORTHEASTERN BOULDER AND SOUTHWESTERN WELD

INCLUDING THE FOLLOWING LOCATIONS
     BERTHOUD...LONGMONT...LOVELAND...MEAD AND MILLIKEN

AT 238 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM 4 MILES SOUTH OF LOVELAND...OR ABOUT 15
MILES SOUTH OF FORT COLLINS.

ALSO THE PUBLIC REPORTED 3/4 INCH HAIL 2 1/2 MILES SOUTH OF 
LOVELAND AT 235 PM MDT.

THE STORM WAS MOVING EAST-SOUTHEAST AT 10 TO 15 MPH.

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR EXTREME EASTERN
COLORADO UNTIL 900 PM MDT.

HEITKAMP
LAT...LON 4011 10499 4016 10519 4045 10504 4041 10480


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The office that day

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

IssuedProductOfficeCountiesLasted
May 29, 3:04 PM MDTSevere Thunderstorm WarningBOUWeld26 min
May 29, 3:13 PM MDTTornado WarningBOUWeld32 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1993Every severe thunderstorm warning in 1993

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.