Flash Flood Warning 28, NWS Glasgow, MT

Issued

Jul 24, 2001, 8:35 PM MDT (02:35 UTC)

Expired

Jul 25, 2001, 2:30 AM MDT

In force

6 hr

Issued by

NWS Glasgow, MT

Area

Whole counties; the outline is the Mesonet’s reconstruction

County McCone County, MT

The Glasgow radar (KGGW), 81 km from the middle of the area, began a volume at 02:38 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.

000 
WGUS55 KGGW 250237
FFWGGW
MTC055-250830-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GLASGOW MT
835 PM MDT TUE JUL 24 2001

THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MCCONE COUNTY IN NORTHEAST MONTANA

* UNTIL 230 AM MDT

* AT 835 PM MDT...WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAINFALL 20 MILES WEST OF VIDA...OR
  ABOUT 23 MILES SOUTHWEST OF WOLF POINT...MOVING SOUTHEAST AT 10 MPH.

* SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN THE
  WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH
  FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH
  FLOODING INCLUDE...VIDA

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL 
CREEKS AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES AND 
COULEES...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

LAT...LON 4800 10637 4789 10633 4790 10626 4738 10628
          4737 10615 4720 10615 4720 10544 4753 10546
          4756 10540 4781 10541 4781 10527 4803 10525
          4799 10593

.END
99

NWS Glasgow, MT wrote its last area forecast discussion before this flash flood warning went out at Jul 24, 8:05 PM MDT, 30 minutes earlier.

NORTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
805 PM MDT TUE JUL 24 2001

SURFACE TROUGH EXTENDING FROM A LOW IN SOUTHERN SASKATCHEWAN HAS
BEEN THE FOCUS FOR CONVECTION TONIGHT. ISOLATED SUPERCELL DEVELOPED
ALONG THIS BOUNDRY...TURNED RIGHT...AND IS NOW MOVING SOUTHEAST...
JUST SOUTHEAST OF GGW. EXPECT THIS CONVECTION TO CONTINUE TO TRACK
SOUTHEAST ALONG THE BOUNDRY THROUGH MY SOUTHERN ZONES...WITH MORE
CONVECTION DEVELOPING OVER THE WESTERN CWA AHEAD OF A STRONG
SHORTWAVE TROUGH ENTERING CENTRAL MONTANA. CURRENT ZONES LOOK GOOD.
NO UPDATES UNTIL SEVERE THUNDERSTORM WATCH 620 EXPIRES AT 10 PM.
WATERHOUSE

EXTENDED...MODELS AGREE ON GENERAL PATTERN FOR DAYS 3 THROUGH 7.
WILL GO WITH AVN/MRF SINCE AVN MOST CLOSELY RESEMBLES ETA IN SHORT
TERM. MAIN CHG TO FORECAST WILL BE TO INTRODUCE TSTORMS INTO FCST
FOR SATURDAY. FRI SHOULD STAY DRY WITH WEAK RIDGING BETWEEN EXITING
SYSTEM AND PAC NW TROF. PACNW TROF SWINGS IN JUST AT THE WRONG TIME
(SAT PM) WITH A LOT OF INSTABILITY SO TS A GOOD BET WITH POSSIBLE
SVR WX EPISODE SAT EVE/NGT. PATTERN FOR SUN-TUE LOOKS TO BE ONE OF
RIDGE BLDG OFF WEST COAST WITH LONG WAVE TROF MOVING INLAND. WILL
KEEP UNSETTLED WX FOR SUN-TUE.        WRIGHT

KGGW 057/083 055/084 057/087 057/089 056/084 055/083 054/082
      BBBTTTT  765222/9526333
KGDV 057/081 056/083 057/086 056/088 057/082 055/083 054/079
      BBBTTTT  764323/9526333

B

Flash Flood Warnings in Montana, 2001Every flash flood warning in 2001

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.