Flash Flood Warning 1, NWS Glasgow, MT

Issued

Jun 22, 2002, 2:45 PM MDT (20:45 UTC)

Expired

Jun 22, 2002, 5:45 PM MDT

In force

3 hr

Issued by

NWS Glasgow, MT

Area

Counties, with a storm outline in the text

County Garfield County, MT

The Billings radar (KBLX), 141 km from the middle of the area, began a volume at 20:45 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.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

000 
WGUS55 KGGW 222045
FFWGGW
MTC033-222345-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GLASGOW MT
243 PM MDT SAT JUN 22 2002

THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN GARFIELD COUNTY IN NORTHEAST MONTANA

* UNTIL 545 PM MDT

* AT 235 PM MDT...NATIONAL WEATHER SERVICE RADAR INDICATED VERY      
  HEAVY RAINFALL 4 MILES SOUTHEAST OF MOSBY...OR ABOUT 25 MILES EAST 
  OF WINNETT...MOVING NORTHWEST AT 15 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...RURAL SOUTHWESTERN GARFIELD COUNTY
  
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.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 4698 10794 4687 10790 4689 10715 4721 10794

.END
77

NWS Glasgow, MT wrote its last area forecast discussion before this flash flood warning went out at Jun 22, 1:29 PM MDT, 1 hour 16 minutes earlier.

NORTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
129 PM MDT SAT JUN 22 2002

.SHORT TERM...FOCUS OF SHORT TERM WILL ONCE AGAIN BE ON SEVERE
THUNDERSTORM DEVELOPMENT. DEWPOINTS ACROSS REGION ARE SOLIDLY IN THE
60S...WITH TEMPERATURES IN THE LOWER TO MID 80S. THIS IS PRODUCING
VERY HIGH CAPE VALUES. THUNDERSTORMS FIRING OVER SOUTHWEST PORTIONS
OF CWA HAVE EXHIBITED EXPLOSIVE DEVELOPMENT AND SHOULD MOVE INTO AN
AREA OF HIGHER INSTABILITY. LIMITING FACTOR SO FAR TODAY HAS BEEN
LACK OF ANY FORCING. AS SHORT WAVE MOVES CLOSER TO CWA EXPECT
WIDESPREAD THUNDERSTORM DEVELOPMENT. AS PER COORDINATION WITH
SPC...BYZ...AND TFX...EXPECT BEST DEVELOPMENT IN THE SHORT TERM OVER
WESTERN HALF OF CWA. REST OF SHORT TERM LOOKS UNSETTLED AS 700MB LOW
TAKES ITS TIME MOVING INTO THE DAKOTAS ON SUNDAY. LINGERING SHOWERS
OVER THE EAST ON MONDAY. WILL NOT MAKE MUCH IN THE WAY OF CHANGES.

.LONG TERM...MODELS STARTING TO SHOW A SLIGHTLY DIFFERENT PATTERN
THAN PREVIOUS RUNS. UPPER LEVEL RIDGE CONTINUES TO DOMINATE THE
WEATHER ON WEDNESDAY AND THURSDAY. MODELS ARE STARTING TO BREAK DOWN
THE RIDGE A BIT ON THURSDAY AND FRIDAY. WITH SUCH AN AMPLIFIED RIDGE
IN PLACE BELIEVE THIS TO BE A BIT QUICK. WILL CONTINUE CURRENT TREND
OF WARM AND DRY THROUGH SATURDAY.  POHL

KGGW TBB 058/075 056/083 056/087 87674111
     BBBB 057/089 056/090 056/090 056/090 8700000000
KGDV TBB 058/076 056/083 054/085 87676111
     BBBB 057/089 056/090 056/090 056/090 8700000000

.GGW...SEVERE THUNDERSTORM WATCH #453 WESTERN HALF OF CWA UNTIL
01Z...

In the hours before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
1046 AM MDT SAT JUN 22 2002

TIME(MDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0400 AM    8 NE CULBERTSON           MT   1.00 INCH HAIL
06/22/02   ROOSEVELT

0215 AM    10NE LINDSAY              MT   1.00 INCH HAIL
06/22/02   DAWSON

1230 AM    POPLAR                    MT   .75 INCH HAIL
06/22/02   ROOSEVELT

Flash Flood Warnings in Montana, 2002Every flash flood warning in 2002

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.