Alert archive / Montana / Flash Flood Warnings in 2013
Flash Flood Warning 1, NWS Glasgow, MT
NWS Glasgow, MT issued this flash flood warning at May 18, 2013, 9:41 PM MDT for McCone County, Montana. It was in force for 94 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 18, 2013, 9:41 PM MDT (03:41 UTC)
- Expired
- May 18, 2013, 11:15 PM MDT
- In force
- 94 min
- Issued by
- NWS Glasgow, MT
- Area
- Storm-based polygon
- Flood severity
- None
County McCone County, MT
The radar
The Glasgow radar (KGGW), 88 km from the middle of the area, began a volume at 03:41 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, 3.7 hours before the alert went out and 88 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
- 148 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 753 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 May 18, 9:31 PM MDT, 10 minutes earlier.
Area forecast discussion, May 18, 9:31 PM MDT, 10 minutes before
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</html>Hazardous weather outlook, May 18, 3:13 PM MDT, 6 hours 28 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GLASGOW MT 313 PM MDT SAT MAY 18 2013 MTZ016>027-059>062-191200- 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- 313 PM MDT SAT MAY 18 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT A BROAD AND WET STORM SYSTEM WILL BRING PERIODS OF RAIN AND A FEW THUNDERSHOWERS TO THE AREA THROUGH MONDAY. TOTAL RAINFALL ACCUMULATIONS THROUGH THE PERIOD WILL BE UP TO AN INCH TO 2 INCHES. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY RAINY SYSTEM WILL CONTINUE THROUGH MONDAY...WITH SOME THUNDERSHOWERS ON SUNDAY AFTERNOON. THE HEAVIEST PERIOD OF RAIN WILL BE SUNDAY NIGHT AND MONDAY MORNING IN THE WIBAUX...PRAIRE...AND DAWSON COUNTY AREA. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
In the hours before
Special weather statement, May 18, 5:28 PM MDT, 4 hours 13 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GLASGOW MT 528 PM MDT SAT MAY 18 2013 MTZ025>027-190030- DAWSON-PRAIRIE-WIBAUX- 528 PM MDT SAT MAY 18 2013 THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... WESTERN WIBAUX COUNTY IN NORTHEAST MONTANA... EASTERN PRAIRIE COUNTY IN NORTHEAST MONTANA... SOUTHEASTERN DAWSON COUNTY IN NORTHEAST MONTANA... UNTIL 630 PM MDT. AT 518 PM MDT...STORM SPOTTERS REPORTED A STRONG THUNDERSTORM 12 MILES EAST OF FALLON...MOVING NORTHEAST AT 15 MPH. PEA-SIZED HAIL AND GUSTS TO 40 MPH ACCOMPANIED THIS STORM. WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS IN THE ADVISORY INCLUDE... HOYT... LAT...LON 4709 10449 4680 10433 4671 10489 4688 10501 TIME...MOT...LOC 2327Z 245DEG 11KT 4683 10483 TFJ WEATHER.GOV/GLASGOW
Local storm report, May 18, 7:23 PM MDT, 2 hours 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
723 PM MDT SAT MAY 18 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0600 PM HEAVY RAIN 12 WNW GLASGOW 48.26N 106.88W
05/18/2013 E1.50 INCH VALLEY MT PUBLIC
IN ONE HOUR ENDING 6 PM MDT.
&&
TEDJLocal storm report, May 18, 9:13 PM MDT, 28 minutes before
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</html>The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 8:00 PM MDT | Areal Flood Advisory | GGW | McCone, Prairie | 3 hr |
Nearby
Flash Flood Warnings in Montana, 2013Every flash flood warning in 2013
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.