Alert archive / Wyoming / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 155, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 3, 2019, 2:04 PM MDT for Platte County, Wyoming. It was in force for 56 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
- Jul 3, 2019, 2:04 PM MDT (20:04 UTC)
- Expired
- Jul 3, 2019, 3:00 PM MDT
- In force
- 56 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Platte County, WY
The radar
The Cheyenne radar (KCYS), 110 km from the middle of the area, began a volume at 20:07 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 3, 1:29 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Rapid City, SD (KUNR), launched 12:00Z, 8.1 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
- 35 J/kg
- Mixed-layer CIN
- -377 J/kg
- Mixed-layer LCL
- 1609 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
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.
NWS Cheyenne, WY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 3, 11:57 AM MDT, 2 hours 7 minutes earlier.
Area forecast discussion, Jul 3, 11:57 AM MDT, 2 hours 7 minutes before
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</html>Hazardous weather outlook, Jul 3, 11:05 AM MDT, 2 hours 59 minutes before
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Special weather statement, Jul 3, 1:36 PM MDT, 28 minutes before
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</html>Special weather statement, Jul 3, 1:49 PM MDT, 15 minutes before
Special Weather Statement National Weather Service Cheyenne WY 149 PM MDT Wed Jul 3 2019 WYZ106-107-032030- East Platte County WY- Central Laramie Range and Southwest Platte County WY- 149 PM MDT Wed Jul 3 2019 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN ALBANY AND SOUTHERN PLATTE COUNTIES UNTIL 230 PM MDT... At 149 PM MDT, Doppler radar was tracking a strong thunderstorm 11 miles west of Bordeaux, or 15 miles southwest of Wheatland, moving east at 15 mph. Pea size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Wheatland, Chugcreek, Lakeview North, Bordeaux, Y-O Ranch, Slater and Westview Circle. This includes Interstate 25 in Wyoming between mile markers 64 and 83. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && A Severe Thunderstorm Watch remains in effect until 1000 PM MDT for southeastern Wyoming. LAT...LON 4180 10524 4187 10532 4213 10495 4186 10475 TIME...MOT...LOC 1949Z 248DEG 14KT 4189 10516 Allen
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 6:08 PM MDT | Special Weather Statement | CYS | Converse | 37 min |
| Jul 2, 6:11 PM MDT | Special Weather Statement | CYS | Laramie | 34 min |
| Jul 2, 6:24 PM MDT | Special Weather Statement | CYS | Goshen | 36 min |
| Jul 2, 6:33 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 42 min |
| Jul 2, 6:34 PM MDT | Flash Flood Warning | CYS | Goshen | 3 hr |
| Jul 2, 6:39 PM MDT | Special Weather Statement | CYS | Converse | 36 min |
| Jul 2, 7:43 PM MDT | Special Weather Statement | CYS | Goshen | 32 min |
| Jul 2, 9:33 PM MDT | Areal Flood Advisory | CYS | Goshen | 3 hr |
| Jul 3, 1:36 PM MDT | Special Weather Statement | CYS | Platte | 39 min |
| Jul 3, 1:49 PM MDT | Special Weather Statement | CYS | Platte | 41 min |
| Jul 3, 2:26 PM MDT | Special Weather Statement | CYS | Converse | 49 min |
| Jul 3, 2:46 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 44 min |
| Jul 3, 3:23 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Platte | 67 min |
| Jul 3, 4:02 PM MDT | Special Weather Statement | CYS | Niobrara | 43 min |
| Jul 3, 4:23 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 20 min |
| Jul 3, 4:28 PM MDT | Tornado Warning | CYS | Niobrara | 32 min |
| Jul 3, 4:33 PM MDT | Special Weather Statement | CYS | Goshen | 57 min |
| Jul 3, 5:36 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 21 min |
| Jul 2, 7:29 PM MDT | Special Weather Statement | CYS | Banner | 31 min |
| Jul 3, 5:25 PM MDT | Special Weather Statement | CYS | Scotts Bluff | 50 min |
| Jul 3, 5:58 PM MDT | Special Weather Statement | CYS | Dawes | 47 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2019Every severe thunderstorm warning in 2019
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.