Alert archive / Colorado / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 106, NWS Denver/Boulder, CO

July 23, 1992Yuma County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 23, 1992, 9:52 PM MDT for Yuma County, Colorado. It was in force for 38 min.

The area

The counties it named.

The facts

Issued: Jul 23, 1992, 9:52 PM MDT (03:52 UTC)
Expired: Jul 23, 1992, 10:30 PM MDT
In force: 38 min
Issued by: NWS Denver/Boulder, CO
Area: Whole counties

County Yuma County, CO

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 3.9 hours before the alert went out and 70 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: 249 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 2707 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 91 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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, Jul 23, 4:54 PM MDT, 4 hours 58 minutes before

COC005-121-240030-

SMALL STREAM FLOOD ADVISORY
NATIONAL WEATHER SERVICE DENVER CO
455 PM MDT THU JUL 23 1992

..SMALL STREAM FLOOD ADVISORY FOR EXTREME EASTERN ARAPAHOE AND
EXTREME SOUTHWESTERN WASHINGTON COUNTIES UNTIL 630 PM...

THE NATIONAL WEATHER SERVICE HAS ISSUED A SMALL STREAM FLOOD ADVISORY
FOR EXTREME EASTERN ARAPAHOE AND EXTREME SOUTHWESTERN WASHINGTON
COUNTIES UNITL 630 PM.  THE ADVISORY INCLUDES THE AREA FROM COTTONWOOD
VALLEY IN EASTERN ARAPAHOE COUNTY TO 5 MILES EAST OF COLORADO HIGHWAY 71
AND FROM THE SOUTHERN COUNTY LINES OF ARAPAHOE AND WASHINGTON COUNTIES
TO COLORADO HIGHWAY 36.  THIS INCLUDES LAST CHANCE.

AT 450 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG
THUNDERSTORM OVER EXTREME SOUTHWESTERN WASHINGTON AND EASTERN ARAPAHOE
COUNTIES.  HEAVY RAIN HAS BEEN FALLING IN THIS AREA...ABOUT 9 MILES
SOUTH OF LAST CHANCE...FOR ABOUT 2 HOURS SINCE 230 PM.  DOPPLER RADAR
RAINFALL ESTIMATES INDICATE 3 TO 4 INCHES OF RAIN HAVE FALLEN IN THIS
REGION.  THE STORMS CONTINUE TO DEVELOP OVER THIS PART OF THE COUNTIES
AND ARE MOVING VERY LITTLE.

THUNDERSTORMS ARE EXPECTED TO REMAIN HERE UNTIL AT LEAST 630 PM.
PERSONS LIVING IN THIS AREA OR TRAVELLING NEARBY SHOULD BE ON THE
LOOKOUT FOR POSSIBLE FLOODING OF ROADS AND LOW-LYING AREAS.  BE
ESPECIALLY CAREFUL AROUND ANY SMALL STREAMS OR WASHES WHERE WATER COULD
RISE QUICKLY.  RUNOFF FROM THESE STORMS COULD ALSO MOVE TOWARD COLORADO
HIGHWAYS 71 AND 36...CAUSING FLOODING PROBLEMS.

STAY TUNED TO NATIONAL WEATHER SERVICE RADIO...COMMERCIAL RADIO OR
TELEVISION FOR LATER STATEMENTS OR POSSIBLE WARNINGS.

DELGADO

Special weather statement, Jul 23, 5:16 PM MDT, 4 hours 36 minutes before

COZ012-013-240000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
515 PM MDT THU JUL 23 1992

...LINE OF VERY HEAVY THUNDERSTORMS MOVING EASTWARD INTO LOGAN COUNTY...

AT 505 PM MDT...RADAR SHOWED A LINE OF VERY STRONG THUNDERSTORMS IN
EXTREME NORTHEAST WELD COUNTY MOVING INTO WESTERN LOGAN COUNTY.  BRIEF
HEAVY RAIN...INTENSE LIGHTNING AND STRONG WINDS WILL BE LIKELY AS THESE
STORMS MOVE THROUGH LOGAN COUNTY BETWEEN NOW AND 6 PM.  T<HERE IS ALSO
A GOOD CHANCE FOR HAIL.

PEOPLE IN EXTREME EASTERN WELD AND NORTHWEST LOGAN COUNTY...ESPECIALLY
IN THE TOWNS OF STERLING AND PEETZ...SHOULD BE READY TO TAKE SHELTER
AS THIS WEATHER MOVES INTO YOUR LOCALITY.

DULONG

Special weather statement, Jul 23, 6:11 PM MDT, 3 hours 41 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, Jul 23, 7:47 PM MDT, 2 hours 5 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, Jul 23, 8:47 PM MDT, 1 hour 5 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>

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 6:01 PM MDT	Tornado Warning	BOU	Logan, Morgan, Weld	29 min
Jul 23, 6:33 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Morgan, Weld	27 min
Jul 23, 6:33 PM MDT	Severe Thunderstorm Warning	BOU	Washington	27 min
Jul 23, 8:46 PM MDT	Severe Thunderstorm Warning	BOU	Washington	59 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.