Alert archive / Colorado / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 119, NWS Denver/Boulder, CO

August 11, 1992Denver County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Aug 11, 1992, 10:56 PM MDT for Denver County, Colorado. It was in force for 34 min.

The area

The counties it named.

The facts

Issued: Aug 11, 1992, 10:56 PM MDT (04:56 UTC)
Expired: Aug 11, 1992, 11:30 PM MDT
In force: 34 min
Issued by: NWS Denver/Boulder, CO
Area: Whole counties

County Denver County, CO

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 4.9 hours before the alert went out and 141 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1643 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 1320 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 45 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, Aug 11, 5:58 PM MDT, 4 hours 58 minutes before

COZ-012-013-120030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
600 PM MDT TUE AUG 11 1992

...THUNDERSTORMS CONTINUE TO DEVELOP IN THE NORTHEAST PLAINS...

AT 557 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTOMS MOVING THROUGH WASHINGTON COUNTY.  THE STRONGER STORM WAS
LOCATED ABOUT 5 MILES EAST OF HILLROSE.  OTHER STORMS WERE DEVELOPING IN
NORTHEASTERN WELD...MORGAN AND EASTERN ADAMS COUNTIES.  THE STORMS WERE
MOVING SOUTHEAST AT ABOUT 12 MPH.

THESE STORMS COULD PRODUCE BRIEF HEAVY RAIN...FREQUENT DEADLY
LIGHTNING...GUSTY WINDS AND POSSIBLY SOME HAIL.  IF YOU ARE IN THE
VICINITY OF THESE THUNDERSTORMS...GO INTO A STURDY BUILDING AND STAY
AWAY FROM WINDOWS.  ALSO...DO NOT USE THE PHONE OR ELECTRICAL APPLIANCES
WHEN LIGHTNING IS AROUND UNLESS ABSOLUTELY NECESSARY.

STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS.

DELGADO

Special weather statement, Aug 11, 8:55 PM MDT, 2 hours 1 minute before

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Special weather statement, Aug 11, 9:58 PM MDT, 58 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.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 6:18 PM MDT	Severe Thunderstorm Warning	BOU	Washington	27 min
Aug 11, 7:02 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	43 min
Aug 11, 7:48 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	42 min
Aug 11, 9:10 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe, Washington	40 min
Aug 11, 10:20 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe, Denver, Douglas, Jefferson	25 min
Aug 11, 10:56 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Douglas, Jefferson	34 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1992 Every 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.