Alert archive / Montana / Flash Flood Warnings in 2001
Flash Flood Warning 13, NWS Billings, MT
NWS Billings, MT issued this flash flood warning at Jul 14, 2001, 7:00 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 14, 2001, 7:00 PM MDT (01:00 UTC)
- Expired
- Jul 14, 2001, 9:00 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 01:04 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 00:00Z, 1.0 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
- 1706 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 2312 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS55 KBYZ 150100
FFWBIL
FFWBIL
MTC111-150300-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BILLINGS MT
700 PM MDT SAT JUL 14 2001
THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WESTERN YELLOWSTONE COUNTY IN SOUTH CENTRAL MONTANA
* UNTIL 900 PM MDT
* AT 700 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAIN OVER THE WARNED AREA.
* SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN THE
WARNED AREA.
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS...STREETS AND UNDERPASSES.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND
IMMEDIATELY.
$$
LAT...LON 4619 10813 4554 10813 4549 10866 4570 10887
4600 10878The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 6:56 PM MDT | Flash Flood Warning | BYZ | Carbon | 2 hr |
| Jul 14, 7:21 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 54 min |
| Jul 14, 7:49 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 56 min |
| Jul 14, 8:20 PM MDT | Flash Flood Warning | BYZ | Big Horn | 115 min |
| Jul 14, 8:29 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 61 min |
| Jul 14, 11:13 PM MDT | Flash Flood Warning | BYZ | Carter | 2 hr |
| Jul 15, 3:17 PM MDT | Flash Flood Warning | BYZ | Treasure | 3 hr |
| Jul 15, 3:31 PM MDT | Severe Thunderstorm Warning | BYZ | Treasure | 59 min |
| Jul 15, 4:44 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 61 min |
| Jul 15, 5:31 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 59 min |
| Jul 15, 5:44 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 61 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.