Alert archive / Wyoming / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 124, NWS Cheyenne, WY

July 21, 1993Goshen County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 21, 1993, 4:44 PM MDT for Goshen County, Wyoming. It was in force for 31 min.

The area

The counties it named.

The facts

Issued
Jul 21, 1993, 4:44 PM MDT (22:44 UTC)
Expired
Jul 21, 1993, 5:15 PM MDT
In force
31 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Goshen County, WY

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 10.7 hours before the alert went out and 264 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 1993-07-21Temperature 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 km15 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 1993-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
3152 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
46 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, Jul 21, 3:10 PM MDT, 1 hour 34 minutes before
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Special weather statement, Jul 21, 3:10 PM MDT, 1 hour 34 minutes before
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  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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</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.
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      <p id="message2">
        Please try again in a few minutes.
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Special weather statement, Jul 21, 3:35 PM MDT, 1 hour 9 minutes before
WYZ070-212215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
335 PM MDT WED JUL 21 1993

...A TORNADO WATCH HAS BEEN ISSUED FOR THE EXTREME EASTERN WYOMING
UNTIL 900 PM...

AT 330 PM A STRONG THUNDERSTORM WAS INDICATED JUST NORTH OF LINGLE
WYOMING.  LINGLE IS 9 MILES NORTHWEST OF TORRINGTON.  THE STORM WAS
MOVING NORTHEAST AT 25 MILES AN HOUR.

STRONG GUSTY WINDS...HAIL...AND DANGEROUS LIGHTNING ARE LIKELY WITH
THIS STORM.  IF THREATENING WEATHER APPROACHES...TAKE SHELTER
IMMEDIATELY.  REPORT ANY SEVERE WEATHER TO A LOCAL LAW ENFORCEMENT
AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF EASTERN WYOMING UNTIL
9PM THIS EVENING.
<

WCJIN-WYSE
CGB
Special weather statement, Jul 21, 3:38 PM MDT, 1 hour 6 minutes before
WYZ070-212215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
335 PM MDT WED JUL 21 1993

...A TORNADO WATCH HAS BEEN ISSUED FOR THE EXTREME EASTERN WYOMING
UNTIL 900 PM...

AT 330 PM A STRONG THUNDERSTORM WAS INDICATED JUST NORTH OF LINGLE
WYOMING.  LINGLE IS 9 MILES NORTHWEST OF TORRINGTON.  THE STORM WAS
MOVING NORTHEAST AT 25 MILES AN HOUR.

STRONG GUSTY WINDS...HAIL...AND DANGEROUS LIGHTNING ARE LIKELY WITH
THIS STORM.  IF THREATENING WEATHER APPROACHES...TAKE SHELTER
IMMEDIATELY.  REPORT ANY SEVERE WEATHER TO A LOCAL LAW ENFORCEMENT
AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF EASTERN WYOMING UNTIL
9PM THIS EVENIN8G.
<

WCJIN-WYSE
CGB
Special weather statement, Jul 21, 4:14 PM MDT, 30 minutes before
NEZ001-005-011-212315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
414 PM MDT WED JUL 21 1993

...TORNADO WATCH UNTIL 9 PM MDT FOR SIOUX...SCOTTS BLUFF...BANNER...
   KIMBALL...DAWES...BOX BUTTE AND CHEYENNE COUNTIES OF THE PANHANDLE...

AT 412 PM MDT RADAR SHOWED A LINE OF STRONG THUNDERSTORMS ENTERING THE
WESTERN NEBRASKA PANHANDLE.  THE LINE EXTENDED FROM 40 MILES SOUTHWEST
OF SCOTTSBLUFF TO 40 MILES NORTHWEST OF SCOTTSBLUFF.  THE STRONGEST
STORM WAS 30 MILES NORTHWEST OF SCOTTSBLUFF.  THE STORMS WERE MOVING
NORTHEAST AT 25 MILES AN HOUR.

A TORNADO WATCH IS IN EFFECT FOR THE WESTERN NEBRASKA PANHANDLE UNTIL
9 PM MDT.  RESIDENTS OF THE WESTERN PANHANDLE SHOULD REMAIN ALERT TO
RAPIDLY CHANGING CONDITIONS THROUGH THE EVENING HOURS.

BRIEF HEAVY RAIN...GUSTY WIND...SMALL HAIL AND DEADLY LIGHTNING MAY
OCCUR WITH THE STORMS OVER BANNER...SCOTTSBLUFF AND SIOUX COUNTIES
OF THE PANHANDLE THROUGH 515 PM MDT.
EMANUEL
Special weather statement, Jul 21, 4:14 PM MDT, 30 minutes before
NEZ001-005-011-212315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
414 PM MDT WED JUL 21 1993

...TORNADO WATCH UNTIL 9 PM MDT FOR SIOUX...SCOTTS BLUFF...BANNER...
   KIMBALL...DAWES...BOX BUTTE AND CHEYENNE COUNTIES OF THE PANHANDLE...

AT 412 PM MDT RADAR SHOWED A LINE OF STRONG THUNDERSTORMS ENTERING THE
WESTERN NEBRASKA PANHANDLE.  THE LINE EXTENDED FROM 40 MILES SOUTHWEST
OF SCOTTSBLUFF TO 40 MILES NORTHWEST OF SCOTTSBLUFF.  THE STRONGEST
STORM WAS 30 MILES NORTHWEST OF SCOTTSBLUFF.  THE STORMS WERE MOVING
NORTHEAST AT 25 MILES AN HOUR.

A TORNADO WATCH IS IN EFFECT FOR THE WESTERN NEBRASKA PANHANDLE UNTIL
9 PM MDT.  RESIDENTS OF THE WESTERN PANHANDLE SHOULD REMAIN ALERT TO
RAPIDLY CHANGING CONDITIONS THROUGH THE EVENING HOURS.

BRIEF HEAVY RAIN...GUSTY WIND...SMALL HAIL AND DEADLY LIGHTNING MAY
OCCUR WITH THE STORMS OVER BANNER...SCOTTSBLUFF AND SIOUX COUNTIES
OF THE PANHANDLE THROUGH 515 PM MDT.
EMANUEL

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 21, 3:52 PM MDTSevere Thunderstorm WarningCYSGoshen38 min
Jul 21, 4:27 PM MDTSevere Thunderstorm WarningCYSGoshen, Laramie18 min
Jul 21, 5:08 PM MDTTornado WarningCYSJohnson37 min

Nearby

Severe Thunderstorm Warnings in Wyoming, 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.