Alert archive / Wyoming / Tornado Warnings in 1991
Tornado Warning 14, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at Jun 1, 1991, 6:08 PM MDT for Laramie County, Wyoming. It was in force for 52 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 1, 1991, 6:08 PM MDT (00:08 UTC)
- Expired
- Jun 1, 1991, 7:00 PM MDT
- In force
- 52 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Laramie County, WY
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 1, 6:20 PM MDT | Hail 0.75 | Laramie, WY |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 0.1 hours before the alert went out and 202 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1289 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -342 m²/s²
- 0-3 km storm-relative helicity
- -213 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -4.4
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 tornado 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 1, 2:27 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, Jun 1, 3:50 PM MDT, 2 hours 18 minutes before
WYZ013-014-012245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 349 PM MDT SAT JUN 1 1991 SCATTERED THUNDERSTORMS CONTINUED OVER SOUTHWEST WYOMING AT 340 PM. A FEW OF THE STORMS WERE LIKELY PRODUCING HEAVY RAIN AND SMALL HAIL ...AS WELL AS DEADLY LIGHTNING. SINCE THE THUNDERSTORMS WERE MOVING NORTHWEST AT ONLY 15 MILES AN HOUR...SOME FLOODING OF LOW LYING AREAS MAY ALSO OCCUR. THUNDERSTORMS WILL CONTINUE OVER SOUTHWEST WTYOMING THROUGH THE EVENING HOURS. PEOPLE IN SOUTHWEST WYOMING SHOULD KEEP AN EYE ON THE SKY THIS AFTERNOON AND EVENING. SHOULD A THUNDERSTORM APPROACH YOUR AREA... SEEK A SAFE PLACE IMMEDIATELY...INDOORS IF POSSIBLE. HATTEN
Special weather statement, Jun 1, 5:23 PM MDT, 45 minutes before
WYZ015-016-017-020000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 523 PM MDT SAT JUN 1 1991 ...SOME STRONG THUNDERSTORMS WERE STARTING TO DEVELOP OVER SOUTHEAST WYOMING AT 520 PM... SCATTERED THUNDERSTORMS WERE DEVELOPING AT 520 PM OVER THE SOUTHERN PARTS OF ALBANY AND LARAMIE COUNTIES. THE STRONGEST STORM WAS LOCATED NEAR BURNS...OR ABOUT 25 MILES EAST OF CHEYENNE. OTHER STORMS WERE BECOMING QUITE STRONG OVER THE EXTREME SOUTHERN END OF THE LARAMIE MOUNTAIN RANGE...ABOUT 20 MILES SOUTHEAST OF LARAMIE. THE STORMS WERE MOVING TO THE NORTHWEST AT ABOUT 25 MILES AN HOUR. PEOPLE IN LARAMIE AND ALBANY COUNTIES SHOULD KEEP AN EYE ON THE SKY THIS EVENING. THESE STORMS WILL LIKELY PRODUCE HAIL...GUSTY WINDS... AND LOCALLY HEAVY RAINS. A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE FOOTHILLS OF THE LARAMIE AND SNOWY RANGES OVERNIGHT. JAD
Special weather statement, Jun 1, 5:34 PM MDT, 34 minutes before
WYZ013-014-020015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 533 PM MDT SAT JUN 1 1991 ...THUNDERSTORMS WITH HEAVY RAIN WERE MOVING THROUGH SOUTHWEST WYOMING AT 525 PM... A BAND OF THUNDERSTORMS WAS LOCATED ACROSS SOUTHWEST WYOMING AT 525 PM. THE BAND EXTENDED ACROSS MUCH OF CENTRAL AND SOUTHERN SWEETWATER COUNTY...AND ON WEST INTO UINTA AND SOUTHERN LINCOLN COUNTIES. THE MAIN WEATHER HAZARD WITH THESE STORMS HAS BEEN SOME HEAVY RAIN AND DEADALY LIGHTNING. PEA TO MARBLE SIZE HAIL WAS REPORTED AT 520 PM AT COKEVILLE...WHICH IS 30 MILES NORTHWEST OF KEMMERER. PEOPLE IN SOUTHWEST WYOMING SHOULD REMAIN ALERT TO THESE STORMS. THEY WILL CONTINUE TO PRODUCE SMALL HAIL AND HEAVY RAINS THROUGH THIS EVENING. SOME SMALL STREAMS MAY BRIEFLY OVERFLOW THEIR BANKS...AND MOTORISTS SHOULD BE ON THE LOOKOUT FOR WATER ON ROADS. JAD
Special weather statement, Jun 1, 5:47 PM MDT, 21 minutes before
NEZ001-005-011-020030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 545 PM MDT SAT JUN 1 1991 ...STRONG THUNDERSTORM IN THE SOUTHWESR NEBRASKA PANHANDLE... AT 540 PM MDT...RADAR INDICATED A STRONG THUNDERSTORM 5 MILES NORTHWEST OF KIMBALL OR 35 MILES NORTHWEST OF SIDNEY NEBRASKA MOVING TO THE NORTHWEST AT 25 MPH. OTHER THUNDERSHOWERS WERE SCATTERED ACROSS BANNER AND SCOTTS BLUFF COUNTIES OF THE CENTRAL AND SOUTHERN NEBRASKA PANHANDLE. BRIEF HEAVY RAIN...STRONG GUSTY WIND AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS AS THEY MOVE NORTHWEST ACROSS KIMBALL...BANNER AND SCOTTS BLUFF COUNTIES UNTIL 630 PM MDT. KIRK
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 7:00 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 60 min |
| Jun 1, 7:50 PM MDT | Flash Flood Warning | CYS | Albany, Laramie | 4 hr |
| Jun 1, 10:50 PM MDT | Flash Flood Warning | CYS | Goshen, Laramie, Platte | 2 hr |
| Jun 2, 5:33 PM MDT | Flash Flood Warning | CYS | Sweetwater | 4 hr |
Nearby
Tornado Warnings in Wyoming, 1991Every tornado warning in 1991Tornadoes in 1991
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.