Alert archive / Montana / Flash Flood Warnings in 2001
Flash Flood Warning 24, NWS Billings, MT
NWS Billings, MT issued this flash flood warning at Jul 26, 2001, 12:00 PM MDT for Golden Valley County, Montana. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 26, 2001, 12:00 PM MDT (18:00 UTC)
- Expired
- Jul 26, 2001, 3:00 PM MDT
- In force
- 3 hr
- Issued by
- NWS Billings, MT
- Area
- Whole counties
County Golden Valley County, MT
The radar
The Billings radar (KBLX), 73 km from the middle of the area, began a volume at 18:02 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 26, 1:00 PM MDT | Flash Flood | Ryegate, MT | Water covered a 1 mile stretch of roadway |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Great_falls, MT (KTFX), launched 12:00Z, 6.0 hours before the alert went out and 162 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
- 1272 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 271 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 26, 9:05 AM MDT, 2 hours 55 minutes earlier.
Area forecast discussion, Jul 26, 9:05 AM MDT, 2 hours 55 minutes before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
905 AM MDT THU JUL 26 2001
.TDY AND FRI...
THUNDERSTORMS HAVE ALREADY DEVELOPED THIS MORNING NORTH OF BILLINGS.
WEAK WAVE MOVING INTO NORTHEAST MONTANA. ETA GRABS ONTO ANOTHER WAVE AND
PUSHES IT INTO SOUTH CENTRAL MONTANA EARLY THIS AFTERNOON. CAPES HIGHS
AND LIS LOW. 12Z ETA HAVE EAST INFLOW OVER THE EAST HALF OF THE AREA.
DEWPOINTS ALREADY IN THE 60S FROM BILLINGS EAST. LIKE THE IDEA OF SEVERE
WHERE IT IS...AND WILL KEEP IT. MONSOONAL MOISTURE BEING DRAWN INTO THE
FORECAST AREA FROM UTAH AND WYOMING. PRECIPITABLE WATER VALUES OF 1.3
INCHES AT RAPID CITY AT 12Z. EAST FLOW SHOULD KEEP VALUES HIGH OVER THE
EAST HALF OF THE AREA. WILL INCLUDE HEAVY RAIN IN THE ZONES FIRST AND
SECOND PERIOD. TEMPERATURES LOOK ON TRACK. WILL UPDATE. HUMPHREY
.SAT...SUN...MON...TUE...WED...
THINGS ARE STILL LOOKING IMPRESSIVE FOR SATURDAY WITH PRELIMINARY
LIFTED INDICES ON THE AVN INDICATING -9 AND LAPSE RATES OVER 9C/KM FROM
700-500 MB. WITH PWS REMAINING IN THE .75 TO 1.00 RANGE AND
FAVORABLE WIND PROFILES...FRONTAL LIFT AND HEIGHT FALLS DUE TO A STRONG
PACIFIC SHORTWAVE SWINGING ACROSS THE NORTHWEST PART OF THE STATE...A
SIGNIFICANT SEVERE WEATHER EVENT APPEARS TO BE TAKING SHAPE. LATEST
AVN CONTINUES TO KEEP SOUTHWEST FLOW IN THE PATTERN WITH A NEW UPPER
LOW DIGGING INTO NORTHERN CALIFORNIA. NO CHANGES. BORSUM
TDY FRI SAT SUN MON TUE WED
-------------------------------------------------------
BIL 085 058/088 062/091 059/084 062/087 060/085 058/083
4/T 42/T 34/T 43/T 33/T 33/T 33/T
LVM 085 054/087 059/088 056/081 059/084 057/082 057/080
3/T 32/T 34/T 43/T 33/T 33/T 33/T
HDN 087 058/090 061/093 057/086 060/089 058/087 056/085
4/T 42/T 34/T 43/T 33/T 33/T 33/T
MLS 086 062/088 064/094 064/087 064/090 062/088 060/086
4/T 60/U 34/T 43/T 33/T 33/T 33/T
4BQ 087 062/089 063/093 063/086 063/089 061/087 059/085
4/T 60/U 34/T 43/T 33/T 33/T 33/T
BHK 086 061/087 061/091 060/084 060/087 059/085 057/083
4/T 60/U 34/T 43/T 33/T 33/T 33/T
SHR 087 058/089 059/091 057/085 059/088 057/086 055/084
4/T 40/U 34/T 43/T 33/T 33/T 33/TThe office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 6:42 PM MDT | Tornado Warning | BYZ | Fallon | 63 min |
| Jul 25, 7:00 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 30 min |
| Jul 25, 7:30 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 30 min |
| Jul 25, 7:45 PM MDT | Tornado Warning | BYZ | Fallon | 55 min |
| Jul 25, 8:00 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 60 min |
| Jul 26, 11:00 AM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Wheatland | 60 min |
| Jul 26, 12:00 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley | 60 min |
| Jul 26, 12:42 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 63 min |
| Jul 26, 12:59 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley | 61 min |
| Jul 26, 1:46 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 59 min |
| Jul 26, 2:26 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Yellowstone | 64 min |
| Jul 26, 2:30 PM MDT | Severe Thunderstorm Warning | BYZ | Treasure | 60 min |
| Jul 26, 3:12 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 63 min |
| Jul 26, 3:27 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 93 min |
| Jul 26, 3:30 PM MDT | Severe Thunderstorm Warning | BYZ | Treasure | 60 min |
| Jul 26, 3:34 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 56 min |
| Jul 26, 3:37 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 53 min |
| Jul 26, 4:15 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 60 min |
| Jul 26, 5:15 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 60 min |
| Jul 26, 5:18 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 57 min |
| Jul 26, 5:52 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.