Alert archive / Wyoming / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 21, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at May 28, 1993, 7:26 PM MDT for Goshen County, Wyoming. It was in force for 28 min.
The area
The counties it named.
The facts
- Issued
- May 28, 1993, 7:26 PM MDT (01:26 UTC)
- Expired
- May 28, 1993, 7:54 PM MDT
- In force
- 28 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Goshen County, WY
The nearest sounding before it
Rapid City, SD (KRAP), launched 00:00Z, 1.4 hours before the alert went out and 251 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
- 923 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 153 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 290128 RRA SVRCYS WYC015-290230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 726 PM MDT FRI MAY 28 1993 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 830 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST WYOMING ...NORTHERN GOSHEN COUNTY RADAR INDICATED A SEVERE THUNDERSTORM ENTERING THE NORTHWEST END OF GOSHEN COUNTY IN SOUTHEAST WYOMING. LARGE HAIL AND HEAVY RAIN IS EXPECTED FROM THIS STORM. THE THUNDERSTORM WAS MOVING EAST VERY SLOWLY AT ABOUT 10 MILES AN HOUR AND MAY CAUSE FLOODING. THE TOWN OF JAY EM WILL LIKELY BE IMPACTED BY THIS SEVERE THUNDERSTORM. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. PAL
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, May 28, 4:50 PM MDT, 2 hours 36 minutes before
WYZ059>062-067>073-290030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 450 PM MDT FRI MAY 28 1993 ...A SEVERE THUNDERSTORM WATCH CONTINUES FOR MUCH OF SOUTHEAST WYOMING UNTIL 900 PM... THE SEVERE THUNDERSTORM WATCH FOR MOST OF SOUTHEAST WYOMING REMAINS IN EFFECT UNTIL 900 PM. THE WATCH MEANS THAT THUNDERSTORMS MAY PRODUCE STRONG WIND GUSTS...LARGE HAIL AND HEAVY RAINFALL. AT 440 PM...INTENSE THUNDERSTORMS CONTINUED OVER SOUTHEAST WYOMING. THE STORMS WERE PRODUCING HEAVY RAIN...HAIL...GUSTY WINDS AND DANGEROUS LIGHTNING. THE INTENSE STORMS WERE LOCATED FROM 15 MILES SOUTH OF TORRINGTON TO 5 MILES NORTH OF CHEYENNE. IN ADDITION...INTENSE THUNDERSTORMS HAD DEVELOPED ABOUT 15 MILES EAST OF CHEYENNE. NO SEVERE WEATHER HAS BEEN REPORTED WITH ANY OF THE INTENSE STORMS. HOWEVER...ONE HALF INCH DIAMETER HAIL WAS REPORTED 20 MILES SOUTH OF TORRINGTON AT 430 PM. HEAVY RAIN WAS NOTED WITH MOST STORMS. ALL OF THE STORMS WERE MOVING NORTHEAST...BUT DEVELOPING BACK TO THE SOUTHWEST. AT 445 PM...THREE QUARTER INCH DIAMETER HAIL WAS REPORTED AT NUNN COLORADO. THIS STORM MAY MOVE INTO SOUTHERN LARAMIE COUNTY BY 515 PM. THUNDERSTORMS WILL CONTINUE IN SOUTHEAST WYOMING THROUGH THE EVENING HOURS. DURING THAT TIME...SOME OF THE STORMS MAY PRODUCE SEVERE WEATHER. WHEN A THUNDERSTORM APPROACHES...MOVE INDOORS FOR SAFETY. BE AWARE OF THE POTENTIAL FOR HEAVY RAIN AND FLASH FLOODING. DO NOT ATTEMPT TO CROSS ROADS OR BRIDGES WHERE WATER IS RUNNING OVER. WYJIN-WYSE WEILAND
Special weather statement, May 28, 4:56 PM MDT, 2 hours 30 minutes before
WYZ059>062-067>073-290030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 450 PM MDT FRI MAY 28 1993 ...A SEVERE THUNDERSTORM WATCH CONTINUES FOR MUCH OF SOUTHEAST WYOMING UNTIL 900 PM... THE SEVERE THUNDERSTORM WATCH FOR MOST OF SOUTHEAST WYOMING REMAINS IN EFFECT UNTIL 900 PM. THE WATCH MEANS THAT THUNDERSTORMS MAY PRODUCE STRONG WIND GUSTS...LARGE HAIL AND HEAVY RAINFALL. AT 440 PM...INTENSE THUNDERSTORMS CONTINUED OVER SOUTHEAST WYOMING. THE STORMS WERE PRODUCING HEAVY RAIN...HAIL...GUSTY WINDS AND DANGEROUS LIGHTNING. THE INTENSE STORMS WERE LOCATED FROM 15 MILES SOUTH OF TORRINGTON TO 5 MILES NORTH OF CHEYENNE. IN ADDITION...INTENSE THUNDERSTORMS HAD DEVELOPED ABOUT 15 MILES EAST OF CHEYENNE. NO SEVERE WEATHER HAS BEEN REPORTED WITH ANY OF THE INTENSE STORMS. HOWEVER...ONE HALF INCH DIAMETER HAIL WAS REPORTED 20 MILES SOUTH OF TORRINGTON AT 430 PM. HEAVY RAIN WAS NOTED WITH MOST STORMS. ALL OF THE STORMS WERE MOVING NORTHEAST...BUT DEVELOPING BACK TO THE SOUTHWEST. AT 445 PM...THREE QUARTER INCH DIAMETER HAIL WAS REPORTED AT NUNN COLORADO. THIS STORM MAY MOVE INTO SOUTHERN LARAMIE COUNTY BY 515 PM. THUNDERSTORMS WILL CONTINUE IN SOUTHEAST WYOMING THROUGH THE EVENING HOURS. DURING THAT TIME...SOME OF THE STORMS MAY PRODUCE SEVERE WEATHER. WHEN A THUNDERSTORM APPROACHES...MOVE INDOORS FOR SAFETY. BE AWARE OF THE POTENTIAL FOR HEAVY RAIN AND FLASH FLOODING. DO NOT ATTEMPT TO CROSS ROADS OR BRIDGES WHERE WATER IS RUNNING OVER. WYJIN-WYSE WEILAND
Special weather statement, May 28, 5:30 PM MDT, 1 hour 56 minutes before
NEZ001-005-011-290230 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 530 PM MDT FRI MAY 28 1993 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9 PM MDT FOR ALL OF THE NEBRASKA PANHANDLE... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM MDT FOR ALL OF THE NEBRASKA PANHANDLE. AT 528 PM RADAR SHOWED AN AREA OF SHOWERS AND THUNDERSTORMS OVER EASTERN WYOMING JUST WEST OF THE NEBRASKA BORDER. THESE STORMS HAD SHOWN LITTLE MOVEMENT. SHOWERS AND THUNDERSTORMS WILL STILL BE POSSIBLE OVER PRIMARILY THE WESTERN PANHANDLE THROUGH EARLY THIS EVENING. OTHERWISE SKIES SHOULD BE PARTLY CLOUDY TO CLOUDY OVER ALL OF THE PANHANDLE. TEMPERATUURES SHOULD COOL OFF INTO THE MID 60S TO LOWER 70S BY 8 PM. RESIDENTS OF THE PANHANDLE SHOULD KEEP ALERT TO CHANGING WEATHER CONDITIONS BY LISTENING TO NOAA WEATHER RADIO OR LOCAL RADIO/TELEVISION STATIONS. EMANUEL
Special weather statement, May 28, 5:32 PM MDT, 1 hour 54 minutes before
NEZ001-005-011-290230 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 530 PM MDT FRI MAY 28 1993 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9 PM MDT FOR ALL OF THE NEBRASKA PANHANDLE... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM MDT FOR ALL OF THE NEBRASKA PANHANDLE. AT 528 PM RADAR SHOWED AN AREA OF SHOWERS AND THUNDERSTORMS OVER EASTERN WYOMING JUST WEST OF THE NEBRASKA BORDER. THESE STORMS HAD SHOWN LITTLE MOVEMENT. SHOWERS AND THUNDERSTORMS WILL STILL BE POSSIBLE OVER PRIMARILY THE WESTERN PANHANDLE THROUGH EARLY THIS EVENING. OTHERWISE SKIES SHOULD BE PARTLY CLOUDY TO CLOUDY OVER ALL OF THE PANHANDLE. TEMPERATUURES SHOULD COOL OFF INTO THE MID 60S TO LOWER 70S BY 8 PM. RESIDENTS OF THE PANHANDLE SHOULD KEEP ALERT TO CHANGING WEATHER CONDITIONS BY LISTENING TO NOAA WEATHER RADIO OR LOCAL RADIO/TELEVISION STATIONS. EMANUEL
Special weather statement, May 28, 6:35 PM MDT, 51 minutes before
WYZ072-073-290130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 635 PM MDT FRI MAY 28 1993 ...A SEVERE THUNDERSTORM WATCH CONTINUES FOR MUCH OF SOUTHEAST WYOMING UNTIL 900 PM... THE SEVERE THUNDERSTORM WATCH FOR MOST OF SOUTHEAST WYOMING REMAINS IN EFFECT UNTIL 900 PM. THE WATCH MEANS THAT THUNDERSTORMS MAY PRODUCE STRONG WIND GUSTS...LARGE HAIL AND HEAVY RAINFALL. AT 630 PM...INTENSE THUNDERSTORMS HAD DEVELOPED BACK INTO CHEYENNE. THESE INTENSE STORMS WERE PRODUCING HEAVY RAIN AND HAIL. AT 625 PM... PEA SIZED TO ONE HALF INCH DIAMETER HAIL WAS OBSERVED OVER MUCH OF CHEYENNE. THE THUNDERSTORM WAS NEARLY STATIONARY...SO THUNDERSTORMS WILL CONTINUE IN THE SOUTHEAST CORNER OF THE STATE THROUGH THE EVENING. < IN ADDITION...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN LARAMIE AND SOUTHEAST GOSHEN COUNTIES UNTIL 645 PM. ALSO... A FLASH FLOOS WATCH IS IN EFFECT FOR SOUTHERN NIOBRARA...GOSHEN AND EASTERN LARAMIE COUNTIES UNTIL MIDNIGHT. WHEN A THUNDERSTORM APPROACHES...MOVE INDOORS FOR SAFETY. BE AWARE OF THE POTENTIAL FOR HEAVY RAIN AND FLASH FLOODING. DO NOT ATTEMPT TO CROSS ROADS OR BRIDGES WHERE WATER IS RUNNING OVER. WYJIN-WYSE WEILAND
Special weather statement, May 28, 6:37 PM MDT, 49 minutes before
WYZ072-073-290130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 635 PM MDT FRI MAY 28 1993 ...A SEVERE THUNDERSTORM WATCH CONTINUES FOR MUCH OF SOUTHEAST WYOMING UNTIL 900 PM... THE SEVERE THUNDERSTORM WATCH FOR MOST OF SOUTHEAST WYOMING REMAINS IN EFFECT UNTIL 900 PM. THE WATCH MEANS THAT THUNDERSTORMS MAY PRODUCE STRONG WIND GUSTS...LARGE HAIL AND HEAVY RAINFALL. AT 630 PM...INTENSE THUNDERSTORMS HAD DEVELOPED BACK INTO CHEYENNE. THESE INTENSE STORMS WERE PRODUCING HEAVY RAIN AND HAIL. AT 625 PM... PEA SIZED TO ONE HALF INCH DIAMETER HAIL WAS OBSERVED OVER MUCH OF CHEYENNE. THE THUNDERSTORM WAS NEARLY STATIONARY...SO THUNDERSTORMS WILL CONTINUE IN THE SOUTHEAST CORNER OF THE STATE THROUGH THE EVENING. < IN ADDITION...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN LARAMIE AND SOUTHEAST GOSHEN COUNTIES UNTIL 645 PM. ALSO... A FLASH FLOOS WATCH IS IN EFFECT FOR SOUTHERN NIOBRARA...GOSHEN AND EASTERN LARAMIE COUNTIES UNTIL MIDNIGHT. WHEN A THUNDERSTORM APPROACHES...MOVE INDOORS FOR SAFETY. BE AWARE OF THE POTENTIAL FOR HEAVY RAIN AND FLASH FLOODING. DO NOT ATTEMPT TO CROSS ROADS OR BRIDGES WHERE WATER IS RUNNING OVER. WYJIN-WYSE 2WEILAND
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 6:55 PM MDT | Tornado Warning | CYS | Johnson | 35 min |
| May 28, 7:07 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 47 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.