Alert archive / Montana / Flash Flood Warnings in 2001

Flash Flood Warning 12, NWS Billings, MT

July 14, 2001Carbon County, Montana

NWS Billings, MT issued this flash flood warning at Jul 14, 2001, 6:56 PM MDT for Carbon County, Montana. It was in force for 2 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 14, 2001, 6:56 PM MDT (00:56 UTC)
Expired: Jul 14, 2001, 9:00 PM MDT
In force: 2 hr
Issued by: NWS Billings, MT
Area: Whole counties

County Carbon County, MT

The radar

The Billings radar (KBLX), 77 km from the middle of the area, began a volume at 00:58 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 14, 7:14 PM MDT	Heavy Rain	Bridger, MT	1-2 inches of rain in 30 minutes

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 00:00Z, 0.9 hours before the alert went out and 276 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

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

Open this sounding in Storm Lab

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 14, 4:51 PM MDT, 2 hours 5 minutes earlier.

Area forecast discussion, Jul 14, 4:51 PM MDT, 2 hours 5 minutes before

SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
451 PM MDT SAT JUL 14 2001

.SUN AND MON...
THUNDERSTORMS ON THE DOWNTURN OVERALL OVER EASTERN ZONES. STILL SOME
WEAK ACTIVITY DOWNSTREAM WITH NEW ETA SHOWING MAIN WAVE TO MOVE UP
INTO SOUTHWEST MONTANA AROUND 12Z SUNDAY MORNING. SHOULD BE ABLE TO
LOWER POPS WESTERN ZONES...BUT WILL LEAVE AS IS IN EASTERN ZONES FOR
NOW. WILL AT IT WILL CLEAR SOME ZONES FROM THE WATCH. RASCH

.TUE...WED...THU...FRI...SAT...

MOIST SOUTHWEST FLOW ALOFT WILL CONTINUE FOR THE ENTIRE EXTENDED
PERIOD...BRINGING A CHANCE FOR THUNDERSTORMS EACH DAY. WITH THE UPPER
LEVEL TROF MOVING INTO THE AREA...TEMPERATURES BECOME SLIGHTLY BELOW
NORMAL BY THE END OF THE PERIOD. MIDDENDORF

    SUN     MON     TUE     WED     THU     FRI     SAT
-----------------------------------------------------------
BIL 062/087 062/092 064/085 063/082 062/082 060/082 060/083
    24/T    44/T    44/T    44/T    43/T    33/T    33/T
LVM 055/085 057/090 057/084 056/081 055/081 053/081 053/082
    34/T    44/T    44/T    44/T    43/T    33/T    33/T
HDN 060/089 060/094 061/089 060/086 059/086 059/085 059/086
    24/T    44/T    44/T    44/T    43/T    33/T    33/T
MLS 065/093 065/096 065/092 065/090 064/089 062/088 062/089
    74/T    44/T    44/T    44/T    43/T    33/T    33/T
4BQ 064/092 064/095 064/090 063/088 062/087 060/086 060/087
    74/T    44/T    44/T    44/T    43/T    33/T    33/T
BHK 063/091 063/094 064/089 063/087 062/086 060/085 060/086
    74/T    44/T    44/T    44/T    43/T    33/T    33/T
SHR 058/089 059/091 060/090 059/088 058/087 058/086 058/087
    44/T    44/T    44/T    44/T    43/T    33/T    33/T

The office that day

Everything else NWS Billings, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 14, 7:00 PM MDT	Flash Flood Warning	BYZ	Yellowstone	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
Jul 14, 7:30 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	60 min

Nearby

Flash Flood Warnings in Montana, 2001 Every 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.