Alert archive / Colorado / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 44, NWS Denver/Boulder, CO

June 20, 1992Logan County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 20, 1992, 4:41 PM MDT for Logan County, Colorado. It was in force for 34 min.

The area

The counties it named.

The facts

Issued
Jun 20, 1992, 4:41 PM MDT (22:41 UTC)
Expired
Jun 20, 1992, 5:15 PM MDT
In force
34 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

County Logan County, CO

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 10.7 hours before the alert went out and 96 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 1992-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 158 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 1992-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 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
158 J/kg
Mixed-layer CIN
-455 J/kg
Mixed-layer LCL
938 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 20, 11:17 AM MDT, 5 hours 24 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Special weather statement, Jun 20, 1:10 PM MDT, 3 hours 31 minutes before
COZ011-012-013-202000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
110 PM MDT  SAT  JUN 20 1992

AT 1PM THUNDERSTORMS WERE DEVELOPING OVER THE FOOTHILLS OF THE FRONT
RANGE.  THE STRONGEST STORM WAS 5 MILES SOUTHWEST OF EVERGREEN IN
JEFFERSON COUNTY...OR 25 MILES SOUTHWEST OF DENVER.  THUNDERSTORMS
WERE MOVING TOWARD THE EAST AND SOUTHEAST AT ABOUT 10 MPH.

THUNDERSTORMS ARE LIKELY TO SPREAD AWAY FROM THE FOOTHILLS AND OUT INTO
TH[E PLAINS AFTER 2PM THIS AFTERNOON.  SEVERE THUNDERSTORMS ARE A
POSSIBILITY.  ALSO HEAVY RAIN COULD PRODUCE LOCAL FLOODING.

STAY TUNED TO LOCAL NEWS STATIONS AND TO NOAA WEATHER RADIO FOR WEATHER
FORECAST UPDATES.

HOLZINGER
Special weather statement, Jun 20, 2:08 PM MDT, 2 hours 33 minutes before
COZ011-012-013-202100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
205 PM MDT  SAT  JUN 20 1992

...TORNADO WATCH INCLUDING MOST OF NORTHEAST COLORADO...

A TORNADO WATCH HAS BEEN ISSUED FOR MOST OF EASTERN COLORARDO UNTIL
8PM.  IN NORTHEAST COLORADO THIS WATCH INCLUDES ADAMS...ARAPAHOE...
DENVER...DOUGLAS...LOGAN...MORGAN...WASHINGTON...WELD...WESTERN
YUMA...EASTERN LARIMER...EASTERN BOULDER...NORTHEASTERN JEFFERSON...
AND EXTREME WESTERN PHILLIPS COUNTIES.

THUNDERSTORMS WERE CONTINUING TO DEVELOP OVER THE NORTHEAST FOOTHILLS
AT 2PM.  THE STRONGEST THUNDERSTORM WAS OVER BUFFALO CREEK IN SOUTHERN
JEFFERSON COUNTY...30 MILES SOUTHWEST OF DENVER.  THIS STORM WAS
CONTINUING TO MOVE TOWARD THE SOUTHEAST AT 10 MPH AND IS LIKELY TO
BE PRODUCING HEAVY RAIN...HAIL...AND DANGEROUS LIGHTNING.

A FEW WEAKER THUNDERSTORMS WERE DEVELOPING FROM JUST WEST OF FORT
COLLINS...SOUTHWARD THROUGH SOUTHERN JEFFERSON COUNTY.

BE PREPARED TO TAKE SHELTER IF THREATENING WEATHER APPROACHES.
STAY TUNED TO LOCAL NEWS STATIONS

HOLZINGER
Special weather statement, Jun 20, 2:51 PM MDT, 1 hour 50 minutes before
COZ004-202200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
250 PM MDT  SAT  JUN 20 1992

...STRONG THUNDERSTORM IN SOUTH CENTRAL PARK COUNTY...

AT 245PM A STRONG THUNDERSTORM WAS LOCATED 5 TO 10 MILES EAST OF HARTSEL
IN SOUTH CENTRAL PARK COUNTY...OR 60 MILES SOUTHWEST OF DENVER.  THIS
STORM HAD JUST DEVELOPED AND WAS MOVING TOWARD THE EAST OR SOUTHEAST
AT 10 TO 15 MPH.

STRONG WINDS...HAIL...BRIEF HEAVY RAIN...AND FREQUENT DANSGEROUS
LIGHTNING ARE POSSIBLE WITH THIS STORM.  THIS STORM APPEARS TO BE MOVING
TOWARD SPINNEY MOUNTAIN RESERVOIR AND ELEVEN MILE CANYON RESERVOIR.
BOATERS SHOULD HEAD FOR SHORE UNTIL THIS STORM PASSES.

HOLZINGER
Special weather statement, Jun 20, 3:57 PM MDT, 44 minutes before
COZ011-012-013-202300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
355 PM MDT  SAT  JUN 20 1992

...THUNDERSTORMS DEVELOPING IN VARIOUS PARTS OF NORTHEAST COLORADO...

AT 350PM THUNDERSTORMS WERE DEVELOPING IN VARIOUS PARTS OF NORTHEAST
COLORADO.

ONE THUNDERSTORM WAS IN CENTRAL LARIMER COUNTY...ABOUT 10 MILES
SOUTHEAST OF RUSTIC...OR 25 MILES WEST OF FORT COLLINS.  THE
NORTHERN PART OF A THUNDERSTORM IN EL PASO COUNTY EXTENDED NORTHWARD
TO LARKSPUR IN SOUTHERN DOUGLAS COUNTY...OR 35 MILES SOUTH OF DENVER.
ALSO...A FEW THUNDERSTORMS WERE DEVELOPING OVER LOGAN...PHILLIPS...
AND SEDGWICK COUNTIES.

ALL THUNDERSTORMS ARE MOVING TOWARD THE SOUTHEAST AT 15 TO 25 MPH.
BRIEF HEAVY RAIN...FREQUENT LIGHTNING...AND STRONG WINDS ARE LIKELY
WITH THESE THUNDERSTORMS.  SEVERE THUNDERSTORMS AND POSSIBLE TORNADOS
ARE POSSIBLE AS A TORNADO WATCH CONTINUES UNTIL 8PM FOR MOST OF EASTERN
COLORADO.

BE PREPARED TO MOVE INDOORS IF TH%REATENING WEATHER IS IN YOUR AREA.
STAY TUNED TO LOCAL NEWS STATIONS AND TO NOAA WEATHER RADIO FOR UPDATES
ON THE LATEST WEATHER.

HOLZINGER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 2:23 PM MDTSevere Thunderstorm WarningBOUDouglas, Jefferson37 min
Jun 20, 5:07 PM MDTSevere Thunderstorm WarningBOUWeld53 min
Jun 20, 5:20 PM MDTSevere Thunderstorm WarningBOULogan, Washington, Yuma40 min
Jun 20, 5:20 PM MDTSevere Thunderstorm WarningBOUWeld40 min
Jun 20, 5:45 PM MDTTornado WarningBOUAdams15 min
Jun 20, 5:53 PM MDTSevere Thunderstorm WarningBOULogan, Washington, Yuma52 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1992Every severe thunderstorm warning in 1992

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.