Alert archive / Wyoming / Severe Thunderstorm Warnings in 1988
Severe Thunderstorm Warning 33, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 18, 1988, 4:23 PM MDT for Platte County, Wyoming. It was in force for 67 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
- Jul 18, 1988, 4:23 PM MDT (22:23 UTC)
- Expired
- Jul 18, 1988, 5:30 PM MDT
- In force
- 67 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Platte County, WY
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 18, 4:42 PM MDT | Hail 1.75 | Platte, 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
Rapid City, SD (KRAP), launched 12:00Z, 10.4 hours before the alert went out and 274 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
- 2057 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 1 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 18, 3:04 PM MDT, 1 hour 19 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 304 PM MDT MON JUL 18 1988 ...TORNADO WATCH FOR SOUTHERN AND WESTERN PANHANDLE UNTIL 9 PM MDT... AT 3 PM MDT THUNDERSTORMS WERE SCATTERED ACROSS THE NORTHERN NEBRASKA PANHANDLE. THE STRONGEST STORM WAS 40 MILES WEST OF CHADRON NEBRASKA ...JUST SOUTHWEST OF HARRISON NEBRASKA. MOVEMENT WAS SOUTHEAST AT 10 MPH. OTHER...MORE INTENSE STORMS WERE IN WYOMING. SMALL HAIL...BRIEF HEAY RAIN AND STRONG WINDS ARE POSSIBLE WITH THE STORMS IN THE SOUTHERN TWO THIRDS OF SIOUX COUNTY UNTIL 415 PM MDT. TORNADO WATCH 309 WILL BE IN EFFECT FOR SIOUX...SCOTTS BLUFF...BANNER ...KIMBALL AND CHEYENNE COUNTIES UNTIL 9 PM MDT TON}IGHT. ELSON
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 9:32 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 38 min |
| Jul 18, 1:38 AM MDT | Severe Thunderstorm Warning | CYS | Dawes | 67 min |
| Jul 18, 4:05 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 55 min |
| Jul 18, 5:01 PM MDT | Tornado Warning | CYS | Scotts Bluff, Sioux | 25 min |
| Jul 18, 5:26 PM MDT | Severe Thunderstorm Warning | CYS | Morrill, Scotts Bluff | 64 min |
| Jul 18, 3:22 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 53 min |
| Jul 18, 4:23 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 47 min |
| Jul 18, 4:44 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 61 min |
| Jul 18, 5:33 PM MDT | Tornado Warning | CYS | Laramie | 57 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 1988Every severe thunderstorm warning in 1988
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.