Alert archive / Montana / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 35, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at May 27, 2018, 12:52 AM MDT for Big Horn County, Rosebud County, Montana. It was in force for 23 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 27, 2018, 12:52 AM MDT (06:52 UTC)
- Expired
- May 27, 2018, 1:15 AM MDT
- In force
- 23 min
- Issued by
- NWS Billings, MT
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Big Horn County, MT, Rosebud County, MT
The radar
The Billings radar (KBLX), 116 km from the middle of the area, began a volume at 06:55 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
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 6.9 hours before the alert went out and 269 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
- 1409 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 2385 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.0
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 Billings, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at May 26, 9:22 PM MDT, 3 hours 30 minutes earlier.
Area forecast discussion, May 26, 9:22 PM MDT, 3 hours 30 minutes before
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Hazardous Weather Outlook National Weather Service Billings MT 220 PM MDT Sat May 26 2018 MTZ028>042-056>058-063>068-WYZ098-099-272030- Southern Wheatland-Musselshell-Treasure-Northern Rosebud-Custer- Fallon-Northern Stillwater-Yellowstone-Powder River-Carter- Southern Big Horn-Eastern Carbon-Northern Park- Northern Sweet Grass-Golden Valley-Red Lodge Foothills- Northern Big Horn-Southern Rosebud-Judith Gap-Paradise Valley- Livingston Area-Beartooth Foothills-Absaroka/Beartooth Mountains- Crazy Mountains-Northeast Bighorn Mountains-Sheridan Foothills- 220 PM MDT Sat May 26 2018 This Hazardous Weather Outlook is for portions of central Montana...south central Montana...southeast Montana and north central Wyoming. * WHAT...Strong to severe thunderstorms producing hail and gusty winds late this afternoon through tonight and again tomorrow afternoon. Very heavy rainfall Sunday and Monday could produce localized flooding. * WHERE...Southern Montana and northern Wyoming. * WHEN...Memorial Day Weekend. * ADDITIONAL HAZARD CONCERNS...Anyone with outdoor plans this Memorial Day weekend should monitor the weather forecast, and be ready to take cover. PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay tuned for updates. Begin preparations to mitigate any impacts that could result from the hazardous weather.
In the hours before
Special weather statement, May 26, 11:44 PM MDT, 1 hour 8 minutes before
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</html>Special weather statement, May 27, 12:37 AM MDT, 15 minutes before
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</html>The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 6:09 PM MDT | Special Weather Statement | BYZ | Sweet Grass | 51 min |
| May 26, 6:32 PM MDT | Special Weather Statement | BYZ | Yellowstone | 28 min |
| May 26, 6:46 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 42 min |
| May 26, 7:00 PM MDT | Special Weather Statement | BYZ | Golden Valley | 30 min |
| May 26, 7:07 PM MDT | Severe Thunderstorm Warning | BYZ | Wheatland | 15 min |
| May 26, 7:29 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Sweet Grass, Wheatland | 61 min |
| May 26, 7:54 PM MDT | Flash Flood Warning | BYZ | Golden Valley, Wheatland | 3 hr |
| May 26, 8:00 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Stillwater, Wheatland | 60 min |
| May 26, 8:16 PM MDT | Special Weather Statement | BYZ | Sweet Grass | 44 min |
| May 26, 8:57 PM MDT | Special Weather Statement | BYZ | Stillwater | 63 min |
| May 26, 9:18 PM MDT | Special Weather Statement | BYZ | Garfield | 27 min |
| May 26, 9:20 PM MDT | Flash Flood Warning | BYZ | Golden Valley, Stillwater, Wheatland | 115 min |
| May 26, 10:05 PM MDT | Special Weather Statement | BYZ | Stillwater | 25 min |
| May 26, 11:44 PM MDT | Special Weather Statement | BYZ | Big Horn | 31 min |
| May 27, 12:24 AM MDT | Special Weather Statement | BYZ | 36 min | |
| May 27, 12:39 AM MDT | Special Weather Statement | BYZ | Custer | 36 min |
| May 27, 1:15 AM MDT | Special Weather Statement | BYZ | Powder River | 30 min |
| May 27, 1:25 AM MDT | Special Weather Statement | BYZ | Fallon | 35 min |
| May 27, 2:26 AM MDT | Special Weather Statement | BYZ | Fallon | 34 min |
| May 27, 3:05 AM MDT | Special Weather Statement | BYZ | Fallon | 25 min |
| May 27, 4:25 AM MDT | Flood Watch | BYZ | Big Horn, Carbon, Carter, Powder River | 40 hr |
| May 27, 12:27 PM MDT | River Flood Warning | BYZ | Rosebud | 5 days |
| May 27, 5:46 PM MDT | Special Weather Statement | BYZ | Stillwater | 44 min |
| May 26, 11:22 PM MDT | Special Weather Statement | BYZ | Sheridan | 38 min |
| May 27, 12:04 AM MDT | Special Weather Statement | BYZ | Sheridan | 26 min |
| May 27, 12:31 AM MDT | Special Weather Statement | BYZ | Sheridan | 29 min |
| May 27, 12:37 AM MDT | Special Weather Statement | BYZ | Sheridan | 23 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2018Every severe thunderstorm warning 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.