Alert archive / Montana / Excessive Heat Warnings in 2021
Excessive Heat Warning 3, NWS Billings, MT
NWS Billings, MT issued this excessive heat warning at Jul 16, 2021, 11:06 AM MDT for 12 counties in Montana; Sheridan County, Wyoming. It took effect at Jul 17, 2021, 12:00 PM MDT. It was in force for 5 days. 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 16, 2021, 11:06 AM MDT (17:06 UTC)
- In effect from
- Jul 17, 2021, 12:00 PM MDT
- Expired
- Jul 22, 2021, 6:55 PM MDT
- In force
- 5 days
- Issued by
- NWS Billings, MT
Counties Big Horn County, MT, Carbon County, MT, Carter County, MT, Custer County, MT, Fallon County, MT, Golden Valley County, MT, Musselshell County, MT, Powder River County, MT, Rosebud County, MT, Stillwater County, MT, Treasure County, MT, Yellowstone County, MT, Sheridan County, WY
The radar
The Billings radar (KBLX), 114 km from the middle of the area, began a volume at 17:05 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
Great_falls, MT (KTFX), launched 12:00Z, 5.1 hours before the alert went out and 320 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
- 2867 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- -16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this excessive heat 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 excessive heat warning went out at Jul 16, 8:08 AM MDT, 2 hours 58 minutes earlier.
Area forecast discussion, Jul 16, 8:08 AM MDT, 2 hours 58 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 |
|---|---|---|---|---|
| Jul 15, 9:31 PM MDT | Special Weather Statement | BYZ | Park | 29 min |
| Jul 16, 3:14 PM MDT | Heat Advisory | BYZ | Carbon, Golden Valley, Park, Stillwater, Sweet Grass, Wheatland | 3 days |
| Jul 16, 3:50 PM MDT | Special Weather Statement | BYZ | Stillwater | 40 min |
| Jul 16, 4:28 PM MDT | Special Weather Statement | BYZ | Yellowstone | 47 min |
| Jul 16, 4:49 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 41 min |
| Jul 16, 5:35 PM MDT | Special Weather Statement | BYZ | Sheridan | 55 min |
Nearby
Excessive Heat Warnings in Montana, 2021Excessive Heat Warnings in Wyoming, 2021Every excessive heat warning in 2021
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.