Flash Flood Warning 13, NWS Glasgow, MT

Issued

Jul 18, 2001, 1:07 AM MDT (07:07 UTC)

Expired

Jul 18, 2001, 4:00 AM MDT

In force

3 hr

Issued by

NWS Glasgow, MT

Area

Whole counties; the outline is the Mesonet’s reconstruction

County Prairie County, MT

The Glasgow radar (KGGW), 173 km from the middle of the area, began a volume at 07:10 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 180709
FFWGGW

MTC079-181000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GLASGOW MT
107 AM MDT WED JUL 18 2001

THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A

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

* UNTIL 400 AM MDT

* AT 100 AM MDT...WEATHER SERVICE DOPPLER RADAR INDICATED   
  THUNDERSTORMS WITH VERY HEAVY RAINFALL NEAR TERRY MOVING 
  NORTHEAST AT 20 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...FALLON AND TERRY.

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 BEGaINS RISING.

LAT...LON 4697 10583 4656 10520 4683 10468 4688 10527
          4716 10545

.END
$$
87

NWS Glasgow, MT wrote its last area forecast discussion before this flash flood warning went out at Jul 17, 8:20 PM MDT, 4 hours 47 minutes earlier.

NORTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
820 PM MDT TUE JUL 17 2001

...SEVERE THUNDERSTORM WATCH FOR ENTIRE CWA THROUGH 10 PM...

STRONG STORMS CONTINUING OVER WEST CENTRAL PORTIONS OF CWA ATTM.
STRONGEST INSTABILITY REMAINS OVER FAR EASTERN ZONES. WILL BE A RACE
TO SEE IF UPPER LEVEL DYNAMICS CAN MAKE IT THERE BEFORE DIURNAL
COOLING BEGINS. EXPLOSIVE THUNDERSTORM DEVELOPMENT NORTH OF SHERIDAN
COUNTY IN CANADA HAS ME A BIT CONCERNED. INSTABILITY AXIS LIES ALONG
NORTH DAKOTA BORDER SOUTH OF THIS STORM. ALTHOUGH NOT BEING
INDICATED WELL ON RADAR. STORMS JUST NOW BEGINNING TO FIRE OVER
RICHLAND COUNTY (CAN SEE THEM OFF TO THE EAST OUT OF WINDOW). IF
THESE STORMS SHOW THE SAME EXPLOSIVE DEVELOPMENT AS THE CANADIAN
STORM...COULD HAVE A LONGER THAN EXPECTED EVENT. WILL LEAVE
WATCH/ZONE ARRANGEMENT ALONE FOR NOW.   POHL

EXTENDED...UPPER LOW REMAINS OVER ALBERTA UNTIL SAT WHEN IT MOVES
EAST AS AN OPEN TROF. THEN AN UPPER TROF DEVELOPS OVER WEST COAST
OVER THE WEEKEND THAT CONTINUES INTO EARLY NEXT WEEK. EXCEPT FOR A
BRIEF PERIOD ON SUNDAY...ERN MT IS IN SW FLOW ALOFT FOR THE ENTIRE
EXTENDED PERIOD WITH FREQUENT SHORTWAVES. GIVEN THE UNSETTLED
PATTERN...WILL NEED TO MENTION A CHANCE OF THUNDERSTORMS EACH DAY.
FORRESTER

KGGW 062/084 060/085 062/082 058/083 056/085 058/084 061/085
      TTTBBBB  793323/7933333
KGDV 063/085 061/085 061/085 057/085 058j/085 058/084 060/084
      TTTBBBB  794423/7933333

In the hours before

MTZ016-021-059-060-180430-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
1000 PM MDT TUE JUL 17 2001

THE NATIONAL WEATHER SERVICE HAS CLEARED A PORTION OF SEVERE
THUNDERSTORM WATCH NUMBER 565. AREAS CLEARED FROM THE SEVERE
THUNDERSTORM WATCH INCLUDE:

IN NORTHEAST MONTANA:

PETROLEUM             PHILLIPS

THIS INCLUDES THE CITIES OF MALTA...WHITEWATER...WINNETT AND ZORTMAN.

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.