Alert archive / Montana / Flash Flood Warnings in 2007

Flash Flood Warning 1, NWS Billings, MT

May 13, 2007Custer County, Fallon County, Rosebud County, Montana

NWS Billings, MT issued this flash flood warning at May 13, 2007, 9:46 PM MDT for Custer County, Fallon County, Rosebud County, Montana. It was in force for 119 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 13, 2007, 9:46 PM MDT (03:46 UTC)
Expired: May 13, 2007, 11:45 PM MDT
In force: 119 min
Issued by: NWS Billings, MT
Area: Whole counties

Counties Custer County, MT, Fallon County, MT, Rosebud County, MT

The radar

The Glasgow radar (KGGW), 229 km from the middle of the area, began a volume at 03:48 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

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 3.8 hours before the alert went out and 230 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: 179 J/kg
Mixed-layer CIN: -181 J/kg
Mixed-layer LCL: 1243 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 326 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 May 13, 9:24 PM MDT, 22 minutes earlier.

Area forecast discussion, May 13, 9:24 PM MDT, 22 minutes before

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Hazardous weather outlook, May 13, 2:44 PM MDT, 7 hours 2 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BILLINGS MT
244 PM MDT SUN MAY 13 2007

MTZ028>042-056>058-063>068-142100-
SOUTHERN WHEATLAND-MUSSELSHELL-TREASURE-NORTHERN ROSEBUD-CUSTER-
FALLON-NORTHERN STILLWATER-YELLOWSTONE-POWDER RIVER-CARTER-
SOUTHERN BIG HORN-EASTERN CARBON-NORTHERN PARK-
NORTHERN SWEET GRASS-GOLDEN VALLEY-RED LODGE FOOTHILLS-
NORTHERN BIG HORN-SOUTHERN ROSEBUD-JUDITH GAP-PARADISE VALLEY-
LIVINGSTON AREA-BEARTOOTH FOOTHILLS-ABSAROKA/BEARTOOTH MOUNTAINS-
CRAZY MOUNTAINS-
244 PM MDT SUN MAY 13 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
MONTANA...SOUTH CENTRAL MONTANA AND SOUTHEAST MONTANA.

.DAY ONE...THIS AFTERNOON AND TONIGHT
A COLD FRONT WILL BRING SCATTERED THUNDERSTORMS TO THE AREA THIS
AFTERNOON AND TONIGHT. SOME OF THESE STORMS MAY BE SEVERE WITH
LARGE HAIL AND DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

WYZ098-099-142100-
NORTHEAST BIG HORN MOUNTAINS-SHERIDAN FOOTHILLS-
244 PM MDT SUN MAY 13 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
WYOMING.

.DAY ONE...THIS AFTERNOON AND TONIGHT
SMALL STREAMS AND CREEKS WILL REMAIN HIGH THIS EVENING AND
OVERNIGHT. MINOR LOW LAND FLOODING IS EXPECTED...ESPECIALLY ON THE
LITTLE GOOSE CREEK SOUTH OF SHERIDAN. A COLD FRONT WILL PUSH INTO
THE AREA TONIGHT. THIS COLD FRONT WILL PRODUCE COOLER TEMPERATURES
AND CAUSE AREA STREAMS AND CREEKS TO FALL.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Local storm report, May 13, 4:29 PM MDT, 5 hours 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
429 PM MDT SUN MAY 13 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0312 PM     HAIL                                     45.65N 110.48W
05/13/2007  1.00 INCH        PARK               MT   SPOTTER

            SPOTTER REPORTED PEA TO QUARTER SIZE HAIL COVERING ROAD.

0315 PM     HAIL                                     45.99N 110.64W
05/13/2007  1.00 INCH        PARK               MT   SPOTTER

0354 PM     HAIL                                     45.83N 110.02W
05/13/2007  1.00 INCH        SWEET GRASS        MT   SPOTTER

0356 PM     HAIL             BIG TIMBER 7N           45.92N 109.99W
05/13/2007  0.88 INCH        SWEET GRASS        MT   SPOTTER

            HAIL IS SOFT WITH HEAVY RAIN. LIGHT WIND.

0400 PM     HAIL             IN BIG TIMBER           45.84N 109.95W
05/13/2007  0.88 INCH        SWEET GRASS        MT   SPOTTER

0407 PM     HAIL                                     45.64N 109.89W
05/13/2007  1.00 INCH        SWEET GRASS        MT   SPOTTER

0410 PM     HAIL                                     45.64N 109.89W
05/13/2007  1.00 INCH        SWEET GRASS        MT   COUNTY SHERIFF

0412 PM     HAIL             7 NW BIG TIMBER         45.89N 110.28W
05/13/2007  1.25 INCH        SWEET GRASS        MT   SPOTTER

            HAILING HEAVILY

&&

Local storm report, May 13, 5:41 PM MDT, 4 hours 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
541 PM MDT SUN MAY 13 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0450 PM     HAIL             MELVILLE                45.65N 109.63W
05/13/2007  1.00 INCH        SWEET GRASS        MT   SPOTTER

0510 PM     HAIL             5 N REED POINT          45.77N 109.55W
05/13/2007  0.88 INCH        STILLWATER         MT   SPOTTER

0536 PM     HAIL             9 WNW ACTON             45.95N 108.87W
05/13/2007  1.25 INCH        YELLOWSTONE        MT   SPOTTER

            ANYWHERE FROM PEA SIZE TO QUARTER SIZE HAIL.

&&

Local storm report, May 13, 6:56 PM MDT, 2 hours 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
656 PM MDT SUN MAY 13 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0312 PM     HAIL             WILSALL                 45.65N 110.48W
05/13/2007  1.00 INCH        PARK               MT   SPOTTER

            SPOTTER REPORTED PEA TO QUARTER SIZE HAIL COVERING ROAD.

0315 PM     HAIL             WILSALL                 45.99N 110.64W
05/13/2007  1.00 INCH        PARK               MT   SPOTTER

0354 PM     HAIL                                     45.83N 110.02W
05/13/2007  1.00 INCH        SWEET GRASS        MT   SPOTTER

0356 PM     HAIL             BIG TIMBER 7N           45.92N 109.99W
05/13/2007  0.88 INCH        SWEET GRASS        MT   SPOTTER

            HAIL IS SOFT WITH HEAVY RAIN. LIGHT WIND.

0400 PM     HAIL             IN BIG TIMBER           45.84N 109.95W
05/13/2007  0.88 INCH        SWEET GRASS        MT   SPOTTER

0407 PM     HAIL             BIG TIMBER              45.64N 109.89W
05/13/2007  1.00 INCH        SWEET GRASS        MT   SPOTTER

0410 PM     HAIL             BIG TIMBER              45.64N 109.89W
05/13/2007  1.00 INCH        SWEET GRASS        MT   COUNTY SHERIFF

0412 PM     HAIL             7 NW BIG TIMBER         45.89N 110.28W
05/13/2007  1.25 INCH        SWEET GRASS        MT   SPOTTER

            HAILING HEAVILY

0450 PM     HAIL             BIG TIMBER              45.65N 109.63W
05/13/2007  1.00 INCH        SWEET GRASS        MT   SPOTTER

0510 PM     HAIL             5 N REED POINT          45.77N 109.55W
05/13/2007  0.88 INCH        STILLWATER         MT   SPOTTER

0520 PM     HAIL             4 ESE MOLT              45.85N 108.86W
05/13/2007  1.00 INCH        YELLOWSTONE        MT   SPOTTER

0536 PM     HAIL             9 WNW ACTON             45.95N 108.87W
05/13/2007  1.25 INCH        YELLOWSTONE        MT   SPOTTER

            ANYWHERE FROM PEA SIZE TO QUARTER SIZE HAIL.

0541 PM     HAIL             5 NW ACTON              45.84N 108.82W
05/13/2007  1.75 INCH        YELLOWSTONE        MT   SPOTTER

            LOTS OF QUARTER SIZE HAIL AND A FEW GOLFBALL

0545 PM     HAIL             2 W LAUREL              45.67N 108.82W
05/13/2007  1.00 INCH        YELLOWSTONE        MT   SPOTTER

            WIND GUSTS OF 30-40 MPH.

0555 PM     HAIL             MOLT                    45.64N 108.90W
05/13/2007  1.75 INCH        STILLWATER         MT   HAM RADIO

0559 PM     HAIL             BILLINGS                45.93N 108.17W
05/13/2007  0.88 INCH        YELLOWSTONE        MT   SPOTTER

0604 PM     HAIL             SHEPHERD                45.93N 108.17W
05/13/2007  1.75 INCH        YELLOWSTONE        MT   SPOTTER

0610 PM     HAIL             2 WSW WORDEN            45.95N 108.21W
05/13/2007  0.88 INCH        YELLOWSTONE        MT   SPOTTER

0610 PM     TSTM WND GST     2 WSW WORDEN            45.95N 108.21W
05/13/2007  70 MPH           YELLOWSTONE        MT   SPOTTER

0611 PM     HAIL             5 NE SHEPHERD           46.00N 108.31W
05/13/2007  1.25 INCH        YELLOWSTONE        MT   SPOTTER

            ALSO AT THE FEEDLOT STEAKHOUSE

0615 PM     HAIL             WORDEN                  45.96N 108.16W
05/13/2007  1.00 INCH        YELLOWSTONE        MT   HAM RADIO

0615 PM     HAIL             1N  WORDEN              45.97N 108.16W
05/13/2007  1.75 INCH        YELLOWSTONE        MT   SPOTTER

            POPLAR TREES 2-3 FEET DIAMETER SNAPPED IN HALF A COUPLE
            FEET OFF THE GROUND.  ALSO HAD SHINLGES RIPPED OFF HOME.

0615 PM     TSTM WND GST     1N  WORDEN              45.97N 108.16W
05/13/2007  70 MPH           YELLOWSTONE        MT   SPOTTER

            POPLAR TREES 2-3 FEET DIAMETER SNAPPED IN HALF A COUPLE
            FEET OFF THE GROUND.  ALSO HAD SHINLGES RIPPED OFF HOME.

0615 PM     TSTM WND DMG     1N  WORDEN              45.97N 108.16W
05/13/2007                   YELLOWSTONE        MT   SPOTTER

            POPLAR TREES 2-3 FEET DIAMETER SNAPPED IN HALF A COUPLE
            FEET OFF THE GROUND.  ALSO HAD SHINLGES RIPPED OFF HOME.

0618 PM     HAIL             5 NE SHEPHERD           46.00N 108.31W
05/13/2007  1.75 INCH        YELLOWSTONE        MT   SPOTTER

            QUARTER TO GOLFBALL SIZE HAIL.

0621 PM     HAIL             1 EAST WORDEN           45.96N 108.14W
05/13/2007  1.00 INCH        YELLOWSTONE        MT   SPOTTER

0621 PM     TSTM WND GST     1 EAST WORDEN           45.96N 108.14W
05/13/2007  70 MPH           YELLOWSTONE        MT   SPOTTER

0623 PM     HAIL             BILLINGS                45.75N 108.57W
05/13/2007  0.75 INCH        YELLOWSTONE        MT   SPOTTER

0623 PM     TSTM WND GST     3 W POMPEYS PILLAR      45.99N 108.00W
05/13/2007  70 MPH           YELLOWSTONE        MT   SPOTTER

            MARBLE SIZED HAIL

0642 PM     HAIL             BILLINGS                45.84N 108.49W
05/13/2007  0.88 INCH        YELLOWSTONE        MT   SPOTTER

&&

Local storm report, May 13, 7:27 PM MDT, 2 hours 19 minutes before

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Local storm report, May 13, 8:18 PM MDT, 1 hour 28 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 6:12 PM MDT	Severe Thunderstorm Warning	BYZ	Yellowstone	33 min
May 13, 6:19 PM MDT	Severe Thunderstorm Warning	BYZ	Musselshell	44 min
May 13, 6:37 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Rosebud, Treasure	53 min
May 13, 6:38 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Yellowstone	67 min
May 13, 6:54 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Treasure, Yellowstone	57 min
May 13, 7:27 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	63 min
May 13, 7:30 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Rosebud, Treasure	45 min
May 13, 7:46 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Rosebud	59 min
May 13, 8:14 PM MDT	Severe Thunderstorm Warning	BYZ	Rosebud	31 min
May 13, 8:22 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	53 min
May 13, 8:56 PM MDT	Severe Thunderstorm Warning	BYZ	Carter, Fallon	64 min
May 13, 9:13 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	32 min
May 13, 9:22 PM MDT	Severe Thunderstorm Warning	BYZ	Powder River	23 min
May 13, 9:58 PM MDT	Severe Thunderstorm Warning	BYZ	Carter, Fallon	47 min

Nearby

Flash Flood Warnings in Montana, 2007 Every flash flood warning in 2007

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.