Alert archive / Montana / Flash Flood Warnings in 2007

Flash Flood Warning 17, NWS Glasgow, MT

July 3, 2007Dawson County, Prairie County, Wibaux County, Montana

NWS Glasgow, MT issued this flash flood warning at Jul 3, 2007, 4:26 AM MDT for Dawson County, Prairie County, Wibaux County, Montana. It was in force for 4 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
Jul 3, 2007, 4:26 AM MDT (10:26 UTC)
Expired
Jul 3, 2007, 8:30 AM MDT
In force
4 hr
Issued by
NWS Glasgow, MT
Area
Whole counties

Counties Dawson County, MT, Prairie County, MT, Wibaux County, MT

The radar

The Glasgow radar (KGGW), 187 km from the middle of the area, began a volume at 10:27 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, 10.4 hours before the alert went out and 187 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-pSkew-T log-p diagram, Glasgow Intl Airport, MT at 00:00Z on 2007-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 608 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Glasgow Intl Airport, MT at 00:00Z on 2007-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
608 J/kg
Mixed-layer CIN
-141 J/kg
Mixed-layer LCL
2366 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
357 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

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 Glasgow, MT wrote its last area forecast discussion before this flash flood warning went out at Jul 3, 3:46 AM MDT, 40 minutes earlier.

Area forecast discussion, Jul 3, 3:46 AM MDT, 40 minutes before
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Hazardous weather outlook, Jul 2, 9:04 AM MDT, 19 hours 22 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GLASGOW MT
904 AM MDT MON JUL 2 2007

MTZ016>027-059>062-031200-
CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY-
DANIELS-SHERIDAN-WESTERN ROOSEVELT-PETROLEUM-GARFIELD-MCCONE-
RICHLAND-DAWSON-PRAIRIE-WIBAUX-NORTHERN PHILLIPS-
SOUTHWEST PHILLIPS-NORTHERN VALLEY-EASTERN ROOSEVELT-
904 AM MDT MON JUL 2 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
MONTANA.

.DAY ONE...TODAY AND TONIGHT
SCATTERED THUNDERSTORMS WILL MOVE EAST ACROSS NORTHEAST MONTANA
TODAY AND TONIGHT. SOME OF THESE STORMS WILL BECOME SEVERE WITH
LARGE HAIL AND DAMAGING WINDS. THE BEST CHANCE OF SEVERE
THUNDERSTORMS WILL BE IN THE LATE AFTERNOON AND EVENING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

NO HAZARDOUS WEATHER EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 6:14 PM MDTSevere Thunderstorm WarningGGWPhillips61 min
Jul 2, 6:15 PM MDTFlash Flood WarningGGWPhillips3 hr
Jul 2, 6:46 PM MDTSevere Thunderstorm WarningGGWValley59 min
Jul 2, 7:15 PM MDTSevere Thunderstorm WarningGGWPhillips60 min
Jul 2, 7:26 PM MDTSevere Thunderstorm WarningGGWPhillips64 min
Jul 2, 7:46 PM MDTSevere Thunderstorm WarningGGWDaniels, Roosevelt, Valley59 min
Jul 2, 8:46 PM MDTSevere Thunderstorm WarningGGWRoosevelt59 min
Jul 2, 8:47 PM MDTSevere Thunderstorm WarningGGWSheridan58 min
Jul 2, 9:41 PM MDTSevere Thunderstorm WarningGGWSheridan41 min
Jul 2, 9:42 PM MDTFlash Flood WarningGGWSheridan3 hr
Jul 2, 9:46 PM MDTSevere Thunderstorm WarningGGWRichland, Roosevelt59 min
Jul 2, 10:45 PM MDTSevere Thunderstorm WarningGGWDawson, Prairie60 min
Jul 2, 11:23 PM MDTSevere Thunderstorm WarningGGWDawson, Prairie, Richland, Wibaux67 min
Jul 2, 11:44 PM MDTSevere Thunderstorm WarningGGWDawson, Prairie46 min
Jul 3, 12:28 AM MDTSevere Thunderstorm WarningGGWDawson, Prairie, Wibaux62 min
Jul 3, 1:16 AM MDTSevere Thunderstorm WarningGGWDawson, Prairie59 min
Jul 3, 1:27 AM MDTSevere Thunderstorm WarningGGWDawson, Prairie, Wibaux63 min
Jul 3, 1:36 AM MDTFlash Flood WarningGGWDawson, Wibaux3 hr
Jul 3, 2:15 AM MDTSevere Thunderstorm WarningGGWDawson, Prairie60 min
Jul 3, 2:31 AM MDTSevere Thunderstorm WarningGGWDawson, Prairie, Wibaux59 min
Jul 3, 3:32 AM MDTSevere Thunderstorm WarningGGWPrairie, Wibaux32 min

Nearby

Flash Flood Warnings in Montana, 2007Every 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.