Severe Thunderstorm Watch 558

Issued

Jul 9, 2000, 2:00 PM MDT (20:00 UTC)

Expired

Jul 9, 2000, 8:00 PM MDT

In force

6 hr

Issued by

the Storm Prediction Center

Counties Big Horn County, MT, Blaine County, MT, Carbon County, MT, Fergus County, MT, Garfield County, MT, Golden Valley County, MT, Musselshell County, MT, Petroleum County, MT, Phillips County, MT, Stillwater County, MT, Sweet Grass County, MT, Treasure County, MT, Valley County, MT, Wheatland County, MT, Yellowstone County, MT

The Billings radar (KBLX), 87 km from the middle of the area, began a volume at 20:01 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.

210 
WWUS9 KMKC 091942
SEL8  

SEL8  
MKC WW 091937
MTZ000-100200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 558
STORM PREDICTION CENTER NORMAN OK
137 PM MDT SUN JUL 9 2000

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   CENTRAL AND EASTERN MONTANA                            

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 200 PM UNTIL 800
PM MDT.

HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 80 STATUTE MILES
EAST AND WEST OF A LINE FROM 60 MILES SOUTH SOUTHWEST OF BILLINGS
MONTANA TO 80 MILES NORTHWEST OF GLASGOW MONTANA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.


DISCUSSION...STORMS INCREASING OVER HIGHER TERRAIN SRN MT AS
HEATING CONTINUES TO DESTABIZE AIRMASS.  WITH ELY LOW LEVEL FLOW OF
MOISTURE AND MODERATE SWLY MID/UPPER FLOW...CONDITIONS FAVORABLE
FOR STORMS BECOMING SEVERE.  SUPERCELLS ARE LIKELY TO DEVELOP LATER
THIS AFTERNOON...PARTICULARLY N CENTRAL MT ENHANCING LARGE HAIL AND
WIND THREAT.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 3 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.  MEAN STORM
MOTION VECTOR 24030.


...HALES

490,1060 445,1072 445,1103 490,1093

Severe Thunderstorm Watches in Montana, 2000Every severe thunderstorm watch in 2000

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.