Alert archive / Wyoming / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 39, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 12, 1996, 6:08 PM MDT for Albany County, Wyoming. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 12, 1996, 6:08 PM MDT (00:08 UTC)
- Expired
- Jun 12, 1996, 6:45 PM MDT
- In force
- 37 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Albany County, WY
The radar
The Cheyenne radar (KCYS), 95 km from the middle of the area, began a volume at 00:10 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Riverton, WY (KRIW), launched 00:00Z, 0.1 hours before the alert went out and 270 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
- 28 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 3141 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCYS 130012 SVRCYS WYC001-130045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 608 PM MDT WED JUN 12 1996 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 645 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST WYOMING ...NORTHERN ALBANY COUNTY INCLUDING THE TOWN OF GARRET... A SEVERE THUNDERSTORM HAS DEVELOPED 50 MILES NORTH NORTHWEST OF LARAMIE IN NORTHWEST ALBANY COUNTY BETWEEN SHIRLEY BASIN AND GARRET. THE THUNDERSTORM WAS MOVING SOUTHEAST AT 15 MILES AN HOUR. LARGE HAIL OVER THREE QUARTERS OF AN INCH IN DIAMETER AND DAMAGING WINDS OVER 60 MPH ARE POSSIBLE. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! WCJIN-WYSE. BAKER
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, Jun 12, 1:39 PM MDT, 4 hours 29 minutes before
WYZ062-063-065-122000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 135 PM MDT WED JUN 12 1996 AT 130 PM MDT...A THUNDERSTORM PRODUCING VERY HEAVY RAINFALL AND POSSIBLE SMALL HAIL HAD DEVELOPED OVER THE SNOWY MOUNTAINS 25 MILES WEST NORTHWEST OF LARAMIE...OR ABOUT 10 MILES SOUTHEAST OF ARLINGTON. THIS STORM WAS MOVING TO THE EAST AT LESS THAN 10 MPH. DUE TO THE SLOW MOVEMENT...THIS STORM WILL LIKELY PRODUCE LOCALLY HEAVY RAhINFALL. PERSONS IN THE VICINITY OF THE STORM SHOULD TAKE SHELTER AND PREPARE FOR HEAVY RAINS AND LOCALIZED FLOODING. DO NOT DRIVE THROUGH ROADS COVERED BY WATER. MOORE WCJIN-WYSE
Special weather statement, Jun 12, 2:16 PM MDT, 3 hours 52 minutes before
WYZ063-065-122045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 216 PM MDT WED JUN 12 1996 AT 210 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM WITH HEAVY RAINFALL AND POSSIBLE SMALL HAIL ABOUT 25 MILES WEST NORTHWEST OF LARAMIE...OR ABOUT 8 MILES NORTH OF CENTENNIAL. THIS STORM WAS MOVING SOUTH SOUTHEAST AT 10 MPH. ON PRESENT TRACK THIS STORM WILL BE IN THE VICNITY OF CENTENNIAL BY 300 PM. PERSONS IN THE VICINITY OF THIfS STORM SHOULD PREPARE FOR HEAVY RAINFALL AND SMALL HAIL.
Special weather statement, Jun 12, 2:54 PM MDT, 3 hours 14 minutes before
WYZ061-062-063-064-065-066-067-068-069-070-122130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 253 PM MDT WED JUN 12 1996 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR SOUTHEAST WYOMING UNTIL 900 PM MDT... AT 248 PM MDT...A THUNDERSTORM WITH HEAVY RAINFALL AND SMALL HAIL WAS LOCATED 20 MILES WEST NORTHWEST OF LARAMIE...OR 10 MILES NORTHEAST OF CENTENNAIL. THIS STORM HAS A HISTORY OF PRODUCING 1/2 INCH HAIL. MOVEMENT WAS EAST AT 10 MPH. OTHER THUNDERSTORMS...SOME WITH HEAVY RAINFALL AND POSSIBLE SMALL HAIL WERE SCATTERED ACROSS EASTERN CARBON COUNTY INTO WESTERN WESTERN ALBANY COUNTY. SOME OF THE STONGER STORMS IN THIS AREA WERE LOCATED 20 MILES NORTHWEST...10 NORTHWEST MEDICINE BOW...10 MILES SOUTHEAST OF MEDICINE BOW...AND ALSO 15 MILES SOUTHEAST OF CENTENNAIL. THESE STORMS WERE MOVING EAST AT 10 TO 15 MPH. SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER SOUTHEAST WYOMING THIS AFTERNOON AND EVENING. SOME OF THESE STORMS COULD BECOME SEVERE...PRODUCING LARGE HAIL AND VERY STRONG WINDS. PERSONS IN THE WATCH AREA SHOULD BE ON THE LOOKOUT FOR THESE THUNDERSTORMS. IF A STORM APPROACHES MOVE INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS. MOORE WCJIN-WYSE
Special weather statement, Jun 12, 3:30 PM MDT, 2 hours 38 minutes before
WYZ015-059>070-130000-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
330 PM MDT WED JUN 12 1996
...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR SOUTHEAST WYOMING
UNTIL 900 PM MDT THIS EVENING...
A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF CENTRAL AND
SOUTHEAST WYOMING UNTIL 900 PM THIS EVENING. COUNTIES IN THE WATCH
ARE:
NATRONA CONVERSE CARBON ALBANY
GOSHEN LARAMIE PLATTE
CITIES INCLUDED IN THE WATCH ARE:
CASPER CHEYENNE DOUGLAS LARAMIE
RAWLINS TORRINGTON WHEATLAND
THUNDERSTORMS HAVE DEVELOPED IN SOUTHEAST WYOMING. SHORTLY BEFORE
330 PM MDT...THE STRONGEST WERE IN ALBANY COUNTY. ONE STRONG STORM WAS
ABOUT 20 MILES SOUTHWEST OF LARAMIE. ANOTHER WAS ABOUT 45 MILES
NORTHWEST OF LARAMIE. THESE STORMS WERE MOVING EAST AROUND 20 MILES AN
HOUR.
LARGE HAIL...STRONG GUSTY WINDS...AND DANGEROUS LIGHTNING CAN BE
EXPECTED THESE STORMS. BRIEF HEAVY RAIN IS ALSO POSSIBLE. IF
THREATENING WEATHER APPROACHES...TAKE SHELTER...PREFERABLY INDOORS.
IF YOU OBSERVE ANY SEVERE WEATHER SUCH AS LARGE HAIL OR DAMAGING WINDS
...REPORT SUCH INCIDENTS TO A LAW ENFORCEMENT AGENCY. REQUE&ST THAT
THEY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.
CGB
WCJIN-WYSE-WYSW-WYNE-WYNWSpecial weather statement, Jun 12, 4:17 PM MDT, 1 hour 51 minutes before
WYZ059-060-061-062-063-064-065-066-067-068-069-070-122315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 415 PM MDT WED JUN 12 1996 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT FOR MUCH OF SOUTHEAST WYOMING... AT 410 PM MDT...THUNDERSTORMS CONTINUED TO DEVELOP OVER SOUTHEAST WYOMING. THE STRONGEST THUNDERSTORMS WERE IN NORTHEAST CARBON COUNTY 55 MILES NORTHEAST OF RAWLINS. THESE THUNDERSTORMS WERE MOVING INTO SOUTHWEST CONVERSE COUNTY. SMALL HAIL AND STRONG WIND GUSTS ALONG WITH BRIEF HEAVY RAIN CAN BE EXPECTED. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 15 MPH. WEAKER THUNDERSTORMS EXTENDED SOUTH ACROSS ALBANY COUNTY. THUNDERSTORMS HAD NONT YET DEVELOPED EAST OF THE LARAMIE RANGE IN PLATTE...LARAMIE... NIOBRARA AND GOSHEN COUNTIES. HOWEVER THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER THE NEXT FEW HOURS. WCJIN-WYSE-WYNE. BAKER
Special weather statement, Jun 12, 5:30 PM MDT, 38 minutes before
WYZ059-060-061-062-063-064-065-066-067-068-069-070-130030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 529 PM MDT WED JUN 12 1996 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MUCH OF SOUTHEAST WYOMING UNTIL 900 PM MDT... AT 525 PM MDT...THUNDERSTORMS CONTINUE OVER SOUTHEAST WYOMING. THUNDERSTORMS WERE OVER SOUTHERN ALBANY COUNTY AND WERE MOVING INTO SOUTHWEST LARAMIE COUNTY. THE STRONGEST THUNDERSTORM WAS 25 MILES NORTHWEST OF CHEYENNE MOVING EAST AT 15 MPH. THIS THUNDERSTORM MAY PRODUCE SMALL HAIL...STRONG GUSTY WINDS AND BRIEF HEAVY RAIN. THUNDERSTORMS ARE EXPECTED TO CONTINUE TO MOVE ACROSS SOUTHEAST WYOMING THIS EVENING. A SEVERE THUNDERSTORM WATCH ~IS IN EFFECT UNTIL 900 PM MDT. STAY TUNED TO YOUR FAVORITE NEWS RADIO FOR THE LATEST INFORMATION ON THESE THUNDERSTORMS. WCJIN-WYSE-WYNE. BAKER
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 6:26 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 34 min |
| Jun 12, 6:47 PM MDT | Severe Thunderstorm Warning | CYS | Albany | 28 min |
| Jun 12, 7:18 PM MDT | Severe Thunderstorm Warning | CYS | Albany | 27 min |
| Jun 13, 3:32 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 28 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 1996Every severe thunderstorm warning in 1996
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; radar from the NEXRAD Level II archive.