Alert archive / Montana / Flash Flood Warnings in 1998

Flash Flood Warning 4, NWS Billings, MT

July 4, 1998Custer County, Montana

NWS Billings, MT issued this flash flood warning at Jul 4, 1998, 10:24 PM MDT for Custer County, Montana. It was in force for 61 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: Jul 4, 1998, 10:24 PM MDT (04:24 UTC)
Expired: Jul 4, 1998, 11:25 PM MDT
In force: 61 min
Issued by: NWS Billings, MT
Area: Whole counties

County Custer County, MT

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 4.4 hours before the alert went out and 232 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: 2813 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1162 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 8.3

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 4, 9:49 PM MDT, 35 minutes earlier.

Area forecast discussion, Jul 4, 9:49 PM MDT, 35 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
Jul 4, 6:16 PM MDT	Severe Thunderstorm Warning	BYZ	Wheatland	59 min
Jul 4, 7:06 PM MDT	Severe Thunderstorm Warning	BYZ	Carter	64 min
Jul 4, 7:23 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	62 min
Jul 4, 8:10 PM MDT	Severe Thunderstorm Warning	BYZ	Golden Valley, Stillwater, Yellowstone	60 min
Jul 4, 8:10 PM MDT	Severe Thunderstorm Warning	BYZ	Musselshell	60 min
Jul 4, 8:21 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	64 min
Jul 4, 8:34 PM MDT	Tornado Warning	BYZ	Yellowstone	31 min
Jul 4, 9:13 PM MDT	Tornado Warning	BYZ	Yellowstone	27 min
Jul 4, 9:22 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	58 min
Jul 4, 9:41 PM MDT	Severe Thunderstorm Warning	BYZ	Yellowstone	59 min
Jul 4, 9:49 PM MDT	Severe Thunderstorm Warning	BYZ	Rosebud	61 min
Jul 4, 9:55 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn	60 min
Jul 4, 10:24 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	61 min
Jul 4, 10:49 PM MDT	Severe Thunderstorm Warning	BYZ	Rosebud	61 min
Jul 4, 10:56 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Treasure	64 min
Jul 4, 11:11 PM MDT	Flash Flood Warning	BYZ	Custer	64 min
Jul 5, 4:17 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn	63 min
Jul 5, 4:45 PM MDT	Severe Thunderstorm Warning	BYZ	Powder River, Rosebud	65 min
Jul 5, 5:01 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Yellowstone	64 min
Jul 5, 5:15 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn	65 min
Jul 5, 5:26 PM MDT	Severe Thunderstorm Warning	BYZ	Powder River	64 min
Jul 5, 5:49 PM MDT	Severe Thunderstorm Warning	BYZ	Powder River	66 min
Jul 5, 5:55 PM MDT	Severe Thunderstorm Warning	BYZ	Stillwater	65 min

Nearby

Flash Flood Warnings in Montana, 1998 Every flash flood warning in 1998

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.