Alert archive / Montana / Flash Flood Warnings in 2001
Flash Flood Warning 17, NWS Billings, MT
NWS Billings, MT issued this flash flood warning at Jul 17, 2001, 5:29 PM MDT for Yellowstone County, Montana. It was in force for 2 hr. 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 17, 2001, 5:29 PM MDT (23:29 UTC)
- Expired
- Jul 17, 2001, 7:30 PM MDT
- In force
- 2 hr
- Issued by
- NWS Billings, MT
- Area
- Whole counties
County Yellowstone County, MT
The radar
The Billings radar (KBLX), 27 km from the middle of the area, began a volume at 23:33 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, 11.5 hours before the alert went out and 245 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
- 1066 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- -67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Jul 17, 2:10 PM MDT, 3 hours 19 minutes earlier.
Area forecast discussion, Jul 17, 2:10 PM MDT, 3 hours 19 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 16, 7:12 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 63 min |
| Jul 17, 2:05 PM MDT | Severe Thunderstorm Warning | BYZ | Wheatland | 55 min |
| Jul 17, 3:00 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Wheatland | 60 min |
| Jul 17, 3:06 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 24 min |
| Jul 17, 4:03 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 57 min |
| Jul 17, 4:16 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon, Stillwater | 59 min |
| Jul 17, 4:54 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 66 min |
Nearby
Flash Flood Warnings in Montana, 2001Every flash flood warning in 2001
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.