Alert archive / Wyoming / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 29, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at May 11, 1998, 5:18 AM MDT for Albany County, Wyoming. It was in force for 32 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
- May 11, 1998, 5:18 AM MDT (11:18 UTC)
- Expired
- May 11, 1998, 5:50 AM MDT
- In force
- 32 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 11:17 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, 11.3 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
- 1 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 881 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 175 m²/s²
- 0-3 km storm-relative helicity
- 313 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
318 WUUS1 KCYS 111120 SVRCYS WYC001-111150- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTED NATIONAL WEATHER SERVICE CHEYENNE WY 518 AM MDT MON MAY 11 1998 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN ALBANY COUNTY IN SOUTHEASTERN WYOMING * UNTIL 550 AM MDT * AT 515 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 30 MILES NORTH NORTHEAST OF LARAMIE ALONG HIGHWAY 34...MILE MARKER 26.... MOVING NORTHEAST AT 25 MPH.. * THE SEVERE THUNDERSTORM WILL BE NEAR... THIS STORM WILL REMAIN OVER THE LARAMIE RANGE. DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS LRE WCJIN-WYSE
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
Local storm report, May 10, 11:35 PM MDT, 5 hours 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1135 PM MDT SUN MAY 10 1998
TIME(MDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1131 AM 27 NW CHEYENNE WY 0.75 INCH HAIL
05/10/98 LARAMIE
0200 PM 20-25 N CHEYENNE WY 1.75 INCH HAIL
05/10/98 LARAMIE
0330 PM LAGRANGE WY 0.75 INCH HAIL
05/10/98 GOSHEN
0610 PM 23 W ALBIN WY 0.75 INCH HAIL
05/10/98 LARAMIE
0645 PM 20 W ALBIN WY 0.75 INCH HAIL
05/10/98 LARAMIE
0725 PM ALBIN WY 0.75 INCH HAIL
05/10/98 LARAMIE
0744 PM 12 W HARRISBURG NE 0.75 INCH HAIL
05/10/98 BANNERLocal storm report, May 10, 11:35 PM MDT, 5 hours 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1135 PM MDT SUN MAY 10 1998
TIME(MDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1131 AM 27 NW CHEYENNE WY 0.75 INCH HAIL
05/10/98 LARAMIE
0200 PM 20-25 N CHEYENNE WY 1.75 INCH HAIL
05/10/98 LARAMIE
0330 PM LAGRANGE WY 0.75 INCH HAIL
05/10/98 GOSHEN
0610 PM 23 W ALBIN WY 0.75 INCH HAIL
05/10/98 LARAMIE
0645 PM 20 W ALBIN WY 0.75 INCH HAIL
05/10/98 LARAMIE
0725 PM ALBIN WY 0.75 INCH HAIL
05/10/98 LARAMIE
0744 PM 12 W HARRISBURG NE 0.75 INCH HAIL
05/10/98 BANNERThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 6:06 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 39 min |
| May 10, 6:40 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 60 min |
| May 10, 6:44 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 61 min |
| May 10, 9:26 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 34 min |
| May 10, 9:57 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 48 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 1998Every severe thunderstorm warning in 1998
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.