Alert archive / Wyoming / Special Weather Statements in 2018
Special Weather Statement, NWS Cheyenne, WY
NWS Cheyenne, WY issued this special weather statement at May 14, 2018, 12:07 AM MDT. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 14, 2018, 12:07 AM MDT (06:07 UTC)
- Expired
- May 14, 2018, 12:45 AM MDT
- In force
- 38 min
- Issued by
- NWS Cheyenne, WY
The radar
The Riverton/Lander radar (KRIW), 203 km from the middle of the area, began a volume at 06:09 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, 6.1 hours before the alert went out and 201 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
- 58 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 2000 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
648 WWUS85 KCYS 140607 SPSCYS Special Weather Statement National Weather Service Cheyenne WY 1207 AM MDT MON MAY 14 2018 WYZ109-111-112-140645- Sierra Madre Range WY-Central Carbon County WY- Southwest Carbon County WY- 1207 AM MDT MON MAY 14 2018 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CARBON COUNTY UNTIL 1245 AM MDT... At 1206 AM MDT, Doppler radar was tracking a strong thunderstorm near Dad, or 28 miles southeast of Wamsutter, moving northeast at 30 mph. Half inch hail and winds in excess of 40 mph will be possible with this storm. This storm will remain over mainly rural areas of southwestern Carbon County. 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. && LAT...LON 4124 10765 4137 10779 4163 10743 4141 10721 TIME...MOT...LOC 0606Z 231DEG 25KT 4134 10763 $$ Jamski
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 6:44 PM MDT | Special Weather Statement | CYS | Laramie | 31 min |
| May 14, 12:47 PM MDT | Severe Thunderstorm Warning | CYS | Albany | 58 min |
| May 14, 1:42 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Laramie | 21 min |
| May 14, 2:07 PM MDT | Special Weather Statement | CYS | Laramie | 38 min |
| May 14, 2:32 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 31 min |
| May 14, 2:45 PM MDT | Special Weather Statement | CYS | Platte | 45 min |
| May 14, 2:59 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 42 min |
| May 14, 3:00 PM MDT | Special Weather Statement | CYS | Converse | 45 min |
| May 14, 3:02 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 58 min |
| May 14, 3:24 PM MDT | Special Weather Statement | CYS | Laramie | 51 min |
| May 14, 3:36 PM MDT | Special Weather Statement | CYS | Goshen | 54 min |
| May 14, 3:39 PM MDT | Areal Flood Advisory | CYS | Laramie | 3 hr |
| May 14, 3:55 PM MDT | Special Weather Statement | CYS | Laramie | 50 min |
| May 14, 4:00 PM MDT | Flash Flood Warning | CYS | Laramie | 3 hr |
| May 14, 3:58 PM MDT | Special Weather Statement | CYS | Banner | 47 min |
| May 14, 4:00 PM MDT | Special Weather Statement | CYS | Sioux | 45 min |
| May 14, 4:33 PM MDT | Special Weather Statement | CYS | Sioux | 42 min |
| May 14, 4:44 PM MDT | Special Weather Statement | CYS | Kimball | 46 min |
| May 14, 4:56 PM MDT | Special Weather Statement | CYS | Box Butte, Sioux | 49 min |
| May 14, 5:29 PM MDT | Special Weather Statement | CYS | Kimball | 46 min |
| May 14, 5:48 PM MDT | Special Weather Statement | CYS | Box Butte | 42 min |
Nearby
Special Weather Statements in Wyoming, 2018Every special weather statement in 2018
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.