Alert archive / Wyoming / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 113, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 19, 1993, 6:52 PM MDT for Goshen County, Laramie County, Wyoming. It was in force for 38 min.
The area
The counties it named.
The facts
- Issued
- Jul 19, 1993, 6:52 PM MDT (00:52 UTC)
- Expired
- Jul 19, 1993, 7:30 PM MDT
- In force
- 38 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
Counties Goshen County, WY, Laramie County, WY
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 0.9 hours before the alert went out and 230 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
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCYS 200054 RRA SVRCYS WYC015-021-200130- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 652 PM MDT MON JUL 19 1993 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 730 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST WYOMING ...SOUTHERN GOSHEN COUNTY...NORTH CENTRAL LARAMIE COUNTY THIS INCLUDES THE COMMUNITY OF LA GRANGE WHICH IS 29 MILES SOUTH OF TORRINGTON. RADAR INDICATED A SEVERE THUNDERSTORM HAD DEVELOPED RAPIDLY 30 MILES NORTH OF CHEYENNE AS OF 650 PM MDT. THE STORM WAS MOVING EAST AT 15 TO 20 MILES AN HOUR. THE STORM WAS MOVING THROUGH OPEN COUNTRY. HOWEVER...BY 720 PM THE STORM WILL BE MOVING TO LA GRANGE. THREE QUARTER INCH HAIL...WIND GUSTS TO 60 MILES AN HOUR AND VERY HEAVY RAIN ARE POSSIBLE WITH THIS STORM. TAKE COVER INDOORS AS THE STORM APPROACHES. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. WCJIN-WYSE CAS
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, 5:15 PM MDT, 1 hour 37 minutes before
NEZ001-005-011-200015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 515 PM MDT MON JUL 19 1993 ...TORNADO WATCH IN EFFECT UNTIL 8 PM FOR THE WESTERN PANHANDLE... A TORNADO WATCH IS IN EFFECT UNTIL 8 PM FOR SIOUX...SCOTTS BLUFF... BANNER...KIMBALL...MORRILL AND CHEYENNE COUNTIES OF THE NEBRASKA PANHANDLE. AT 513 PM MDT RADAR INDICATED A FEW THUNDERSTORMS HAD FORMED OVER THE SOUTHWEST PART OF THE NEBRASKA PANHANDLE. THE STORMS HAD FORMED ALONG A LINE FROM 25 MILES SOUTHEAST OF SCOTTSBLUFF TO 45 MILES SOUTHWEST OF SCOTTSBLUFF. MOVEMENT WAS NORTHEAST AT 20 MILES AN HOUR. HEAVY RAIN...GUSTY WIND...SMALL HAIL AND DEADLY LIGHTNING MAY OCCUR WITH THESE STORMS OVER KIMBALL...BANNER...WESTERN MORRILL AND WESTERN CHEYENNE COUNTIES OF THE NEBRASKA PANHANDLE UNTIL 615 PM MDT. EMANUEL
Special weather statement, Jul 19, 5:15 PM MDT, 1 hour 37 minutes before
NEZ001-005-011-200015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 515 PM MDT MON JUL 19 1993 ...TORNADO WATCH IN EFFECT UNTIL 8 PM FOR THE WESTERN PANHANDLE... A TORNADO WATCH IS IN EFFECT UNTIL 8 PM FOR SIOUX...SCOTTS BLUFF... BANNER...KIMBALL...MORRILL AND CHEYENNE COUNTIES OF THE NEBRASKA PANHANDLE. AT 513 PM MDT RADAR INDICATED A FEW THUNDERSTORMS HAD FORMED OVER THE SOUTHWEST PART OF THE NEBRASKA PANHANDLE. THE STORMS HAD FORMED ALONG A LINE FROM 25 MILES SOUTHEAST OF SCOTTSBLUFF TO 45 MILES SOUTHWEST OF SCOTTSBLUFF. MOVEMENT WAS NORTHEAST AT 20 MILES AN HOUR. HEAVY RAIN...GUSTY WIND...SMALL HAIL AND DEADLY LIGHTNING MAY OCCUR WITH THESE STORMS OVER KIMBALL...BANNER...WESTERN MORRILL AND WESTERN CHEYENNE COUNTIES OF THE NEBRASKA PANHANDLE UNTIL 615 PM MDT. EMANUEL
Special weather statement, Jul 19, 5:21 PM MDT, 1 hour 31 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, 1 hour 31 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, 56 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, 56 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
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 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 19, 9:15 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 30 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.