Severe Thunderstorm Warning 5, NWS Great Falls, MT

MTZ004-252000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HELENA MT
1256 PM MDT TUE JUN 25 1991

THUNDERSTORMS ARE BEGINNING TO DEVELOP IN SOUTHWESTERN MONTANA
THIS AFTERNOON. THUNDER IS BEING HEARD IN BUTTE FROM A STORM
THAT IS TO THE WEST OF THE CITY.  THIS STORM IS MOVING NORTHEAST
AT 12 MILES AN HOUR. MISSOULA RADAR CLASSIFIES THIS STORM AS
STRONG.  LIGHTNING DETECTION CHARTS SHOW THIS STORM
PRODUCING ABOUT 20 STRIKES IN THE PAST HALF HOUR.  OTHER
THUNDERSTORMS ARE GROWING IN THE VICINITY OF HELENA.

THUNDERSTORMS WILL CONTINUE TO DEVELOP AS THE AFTERNOON GOES ON.
IT IS POSSIBLE THAT THEY COULD PRODUCE HEAVY RAIN...HAIL...AND
LIGHTNING.  TRAVELERS AND PEOPLE INVOLVED IN OUTDOOR INTERESTS
SHOULD MONITOR NOAA WEATHER RADIO AND OTHER MEDIA TO KEEP UPDATED
ON THE WEATHER.

MTZ004-252115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HELENA MT
211 PM MDT TUE JUN 25 1991

THUNDERSTORMS HAVE REACHED THE HELENA VALLEY. THEY ARE PRODUCING
LIGHT SHOWERS AT THE HELENA AIRPORT AND SOUTH WINDS TO 23 MPH.
THERE HAVE BEEN SOME LIGHTNING STRIKES BUT NOT MANY.  THESE
THUNDERSTORMS ARE MOVING TO THE NORTHEAST AT 12 MPH.

OTHER SCATTERED THUNDERSTORMS CONTINUE IN SOUTHWEST MONTANA BUT
RADAR SHOWS THEM BEING OF LIGHT INTENSITY.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
3:05 PM MDT TUE JUN 25 1991

A WEATHER OBSERVER AT SUN RIVER REPORTED 1/2 INCH SIZE HAIL SHORTLY
AFTER 3 PM MDT. THE THUNDERSTORM WAS ALSO PRODUCING HEAVY RAINS.
THE OBSERVER COMMENTED THAT THE STORM APPEARED TO BE INTENSIFYING.

THE SUN RIVER IS LOCATED ABOUT 10 MILE NORTH AND WEST OF GREAT FALLS.
THIS THUNDERSTORM IS MOVING NORTHEAST. LIGTNING DETECTION CHARTS
VARIFY CLOUD TO GROUND CONTACT WITH THIS STORM.

IF YOU SEE ANY THUNDERSTORM APPROACHING, STAY INDOORS AND ALERT.
THIS IS NOT EXPECTED TO BECOME A SEVERE STORM AT THIS TIME.

WRC/END