Alert archive / Wyoming / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 121, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 19, 1993, 9:15 PM MDT for Laramie County, Wyoming. It was in force for 30 min.
The area
The counties it named.
The facts
- Issued
- Jul 19, 1993, 9:15 PM MDT (03:15 UTC)
- Expired
- Jul 19, 1993, 9:45 PM MDT
- In force
- 30 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Laramie County, WY
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 3.3 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
- 4 J/kg
- Mixed-layer CIN
- -315 J/kg
- Mixed-layer LCL
- 2652 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 19, 5:21 PM MDT, 3 hours 54 minutes before
WYZ070-072-073-200030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 521 PM MDT MON JUL 19 1993 AT 505 PM MDT...A WEATHER SERVICE OBSERVER IN PINE BLUFFS REPORTED PEA TO MARBLE SIZED HAIL. PINE BLUFFS IS ALONG INTERSTATE 80 NEAR THE NEBRASKA BORDER ABOUT 38 MILES EAST OF CHEYENNE. AS EXPECTED...STRONG THUNDERSTORMS DEVELOPED RAPIDLY IN THAT AREA AROUND 5 PM AND WERE MOVING NORTHEAST AT 25 MILES AN HOUR. MORE THUNDERSTORMS ARE LIKELY TO DEVELOP ALONG THE WYOMING/NEBRASKA BORDER OVER THE NEXT HOUR OR SO. BESIDES PINE BLUFFS...OTHER COMMUNITIES LIKE LA GRANGE...HAWK SPRINGS...AND TORRINGTON COULD SEE STRONG THUNDERSTORMS. A TORNADO WATCH REMAINS IN EFFECT FOR SOUTHEAST AND EAST CENTRAL WYOMING UNTIL 8 PM. SOME THUNDERSTORMS COULD BECOME SEVERE...AND EVEN PRODUCE TORNADOES. WHEN THUNDERSTORMS APPROACH...USE GOOD SENSE AND MOVE INDOORS. STAY THERE UNTIL THE STORMS HAVE PASSED. WCJIN-WYSE CAS &
Special weather statement, Jul 19, 5:21 PM MDT, 3 hours 54 minutes before
WYZ070-072-073-200030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 521 PM MDT MON JUL 19 1993 AT 505 PM MDT...A WEATHER SERVICE OBSERVER IN PINE BLUFFS REPORTED PEA TO MARBLE SIZED HAIL. PINE BLUFFS IS ALONG INTERSTATE 80 NEAR THE NEBRASKA BORDER ABOUT 38 MILES EAST OF CHEYENNE. AS EXPECTED...STRONG THUNDERSTORMS DEVELOPED RAPIDLY IN THAT AREA AROUND 5 PM AND WERE MOVING NORTHEAST AT 25 MILES AN HOUR. MORE THUNDERSTORMS ARE LIKELY TO DEVELOP ALONG THE WYOMING/NEBRASKA BORDER OVER THE NEXT HOUR OR SO. BESIDES PINE BLUFFS...OTHER COMMUNITIES LIKE LA GRANGE...HAWK SPRINGS...AND TORRINGTON COULD SEE STRONG THUNDERSTORMS. A TORNADO WATCH REMAINS IN EFFECT FOR SOUTHEAST AND EAST CENTRAL WYOMING UNTIL 8 PM. SOME THUNDERSTORMS COULD BECOME SEVERE...AND EVEN PRODUCE TORNADOES. WHEN THUNDERSTORMS APPROACH...USE GOOD SENSE AND MOVE INDOORS. STAY THERE UNTIL THE STORMS HAVE PASSED. WCJIN-WYSE CAS &
Special weather statement, Jul 19, 5:56 PM MDT, 3 hours 19 minutes before
WYZ066-067-068-069-070-071-072-073-200100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 556 PM MDT MON JUL 19 1993 AT 545 PM MDT...A LINE OF THUNDERSTORMS HAD DEVELOPED OVER ALBANY AND EXTREME SOUTHWEST PLATTE COUNTIES OF SOUTHEAST WYOMING. TWO STRONG STORMS WERE NOTED ON THIS LINE. ONE WAS NEAR BOSLER OR ABOUT 19 MILES NORTH OF LARAMIE. THE OTHER WAS IN THE SOUTHWEST CORNER OF PLATTE COUNTY...ABOUT 20 MILES SOUTHWEST OF CHUGWATER. THE STORMS WERE MOVING NORTHEAST AT 20 TO 25 MILES AN HOUR. PEA TO MARBLE SIZED HAIL...WINDS TO 45 MILES AN HOUR...AND LOCALLY HEAVY RAIN ARE LIKELY. AS THESE STORMS MOVE NORTHEAST...THEY WILL ENCOUNTER MORE FAVORABLE CONDTIONS AND COULD BECOME SEVERE. WHEN THUNDERSTORMS ARE IN THE AREA...MAKE THE RIGHT CHOICE AND MOVE INDOORS UNTIL THEY ARE OUT OF THE AREA. THESE STORMS ARE MOVING THROUGH HILLY AND MOUNTAINOUS TERRAIN. HEAVY RAIN FALLING IN THESE AREAS COULD PRODUCE LOCALIZED FLASH FLOODING. A TORNADO WATCH REMAINS IN EFFECT UNTIL 8 PM FOR SOUTHEAST AND EAST CENTRAL WYOMING. WCJIN-WYSE CAS
Special weather statement, Jul 19, 5:56 PM MDT, 3 hours 19 minutes before
WYZ066-067-068-069-070-071-072-073-200100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 556 PM MDT MON JUL 19 1993 AT 545 PM MDT...A LINE OF THUNDERSTORMS HAD DEVELOPED OVER ALBANY AND EXTREME SOUTHWEST PLATTE COUNTIES OF SOUTHEAST WYOMING. TWO STRONG STORMS WERE NOTED ON THIS LINE. ONE WAS NEAR BOSLER OR ABOUT 19 MILES NORTH OF LARAMIE. THE OTHER WAS IN THE SOUTHWEST CORNER OF PLATTE COUNTY...ABOUT 20 MILES SOUTHWEST OF CHUGWATER. THE STORMS WERE MOVING NORTHEAST AT 20 TO 25 MILES AN HOUR. PEA TO MARBLE SIZED HAIL...WINDS TO 45 MILES AN HOUR...AND LOCALLY HEAVY RAIN ARE LIKELY. AS THESE STORMS MOVE NORTHEAST...THEY WILL ENCOUNTER MORE FAVORABLE CONDTIONS AND COULD BECOME SEVERE. WHEN THUNDERSTORMS ARE IN THE AREA...MAKE THE RIGHT CHOICE AND MOVE INDOORS UNTIL THEY ARE OUT OF THE AREA. THESE STORMS ARE MOVING THROUGH HILLY AND MOUNTAINOUS TERRAIN. HEAVY RAIN FALLING IN THESE AREAS COULD PRODUCE LOCALIZED FLASH FLOODING. A TORNADO WATCH REMAINS IN EFFECT UNTIL 8 PM FOR SOUTHEAST AND EAST CENTRAL WYOMING. WCJIN-WYSE CAS
Special weather statement, Jul 19, 7:27 PM MDT, 1 hour 48 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 19, 7:28 PM MDT, 1 hour 47 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 Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 6:54 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte | 36 min |
| Jul 19, 7:29 PM MDT | Severe Thunderstorm Warning | CYS | Sheridan | 31 min |
| Jul 19, 8:25 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Kimball | 35 min |
| Jul 19, 9:00 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 30 min |
| Jul 19, 6:11 PM MDT | Tornado Warning | CYS | Johnson | 34 min |
| Jul 19, 6:21 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 25 min |
| Jul 19, 6:52 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie | 38 min |
| Jul 19, 7:12 PM MDT | Severe Thunderstorm Warning | CYS | Sheridan | 31 min |
| Jul 19, 7:45 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 45 min |
| Jul 19, 8:22 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 53 min |
| Jul 20, 1:45 PM MDT | Tornado Warning | CYS | Big Horn | 15 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.