Alert archive / Montana / Flash Flood Warnings in 2001
Flash Flood Warning 5, NWS Billings, MT
NWS Billings, MT issued this flash flood warning at Jun 30, 2001, 1:25 AM MDT for Powder River 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
- Jun 30, 2001, 1:25 AM MDT (07:25 UTC)
- Expired
- Jun 30, 2001, 3:30 AM MDT
- In force
- 2 hr
- Issued by
- NWS Billings, MT
- Area
- Whole counties
County Powder River County, MT
The radar
The Billings radar (KBLX), 237 km from the middle of the area, began a volume at 07:26 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
Rapid City, SD (KUNR), launched 00:00Z, 7.4 hours before the alert went out and 262 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
- 917 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 2203 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KBYZ 300725 FFWBIL FFWBIL MTC075-300930- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE BILLINGS MT 125 AM MDT SAT JUN 30 2001 THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A * FLASH FLOOD WARNING FOR... POWDER RIVER COUNTY IN SOUTHEAST MONTANA * UNTIL 330 AM MDT * AT 125 AM 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. ABSOLUTELY DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. $$ LAT...LON 4557 10569 4569 10602 4535 10570
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 Jun 29, 8:46 PM MDT, 4 hours 39 minutes earlier.
Area forecast discussion, Jun 29, 8:46 PM MDT, 4 hours 39 minutes before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
846 PM MDT FRI JUN 29 2001
.SAT AND SUN...
SEVERE THUNDERSTORM WATCH STILL CONTINUES IN THE WESTERN ZONES UNTIL
1100 PM. SUBTLE SHORTWAVE SEEN ON WATER VAPOR IMAGERY MIGHT HELP BREAK
THE CAP FOR CONVECTIVE INITIATION. SO FAR...JUST SOME WEAK CONVECTION...
WHICH COULD HELP TO ERODE THE CAP. THE NEW ETA APPEARS TO KEEP THE MAIN
ACTION NORTH OF THE MT/WY BORDER. THEREFORE WILL UPDATE THE WYOMING
ZONES TO BRING DOWN THE POPS. OTHERWISE...NO OTHER UPDATES. STROBIN
.MON...TUE...WED...THU...FRI...
MID CONTINENT RIDGE OF HIGH PRESSURE WILL MOVE WEST AND CENTER NEAR THE
WEST COAST BY WEDNESDAY. A CANADIAN COOL FRONT WILL MOVE INTO THE MID
SECTION OF THE U.S. BEGINNING WEDNESDAY. THIS WILL BRING THE WARMEST DAY
TO THE NORTHERN ROCKIES ON TUESDAY WITH COOLING THROUGH THE REMAINDER OF
THE WEEK. AS THE RIDGE SHIFTS WEST...SUBSIDENCE IN THE RIDGE WILL LIMIT
THUNDERSTORM DEVELOPMENT TO MAINLY DRY CONDITIONS THROUGH THURSDAY
WITH INCREASING CHANCES OF THUNDERSTORMS FRIDAY AS A WARMER RETURN FLOW
DEVELOPS ACROSS THE AREA. GUIDANCE TEMPERATURES WERE A BIT TOO LOW FOR
TUESDAY AND WENT WITH LOCALLY DEVELOPED NUMBERS INSTEAD. THORICHT
SAT SUN MON TUE WED THU FRI
-----------------------------------------------------------
BIL 063/082 062/083 058/082 056/086 057/083 056/082 054/083
44/T 43/T 22/B 22/B 22/B 22/B 33/T
LVM 055/082 055/081 055/080 052/082 053/080 052/079 050/080
33/T 33/T 22/B 22/B 22/B 22/B 33/T
HDN 061/083 060/085 057/084 054/088 055/085 053/084 051/084
44/T 43/T 22/B 22/B 22/B 22/B 33/T
MLS 065/084 064/085 059/085 060/088 059/083 055/082 054/084
33/T 64/T 22/B 22/B 22/B 22/B 33/T
4BQ 065/084 063/083 058/083 058/087 057/082 054/081 053/083
33/T 64/T 22/B 22/B 22/B 22/B 33/T
BHK 063/084 062/083 066/081 055/085 055/081 053/080 052/081
33/T 64/T 22/B 22/B 22/B 22/B 33/T
SHR 060/084 057/085 055/081 054/086 052/081 051/080 050/082
33/T 43/T 22/B 22/B 22/B 22/B 33/TThe office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 11:03 PM MDT | Severe Thunderstorm Warning | BYZ | Treasure | 42 min |
| Jun 29, 11:16 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Powder River | 44 min |
| Jun 29, 11:43 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 47 min |
| Jun 29, 11:52 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 53 min |
| Jun 29, 11:59 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 61 min |
| Jun 30, 12:03 AM MDT | Severe Thunderstorm Warning | BYZ | Custer | 57 min |
| Jun 30, 12:23 AM MDT | Severe Thunderstorm Warning | BYZ | Powder River, Rosebud | 67 min |
| Jun 30, 12:41 AM MDT | Tornado Warning | BYZ | Rosebud | 34 min |
| Jun 30, 12:44 AM MDT | Severe Thunderstorm Warning | BYZ | Carter | 61 min |
| Jun 30, 12:57 AM MDT | Flash Flood Warning | BYZ | Rosebud | 2 hr |
| Jun 30, 12:59 AM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 61 min |
| Jun 30, 1:58 AM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 32 min |
| Jun 30, 3:02 AM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 58 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.