Severe Thunderstorm Warning 82, NWS Great Falls, MT

Issued

Jul 10, 2000, 2:53 PM MDT (20:53 UTC)

Expired

Jul 10, 2000, 3:45 PM MDT

In force

52 min

Issued by

NWS Great Falls, MT

Area

Whole counties; the outline is the Mesonet’s reconstruction

County Blaine County, MT

The Glasgow radar (KGGW), 154 km from the middle of the area, began a volume at 20:52 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 
WUUS55 KTFX 102058
SVRGTF
MTC005-102145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING...FOR GOLF BALL SIZE HAIL
NATIONAL WEATHER SERVICE GREAT FALLS MT
253 PM MDT MON JUL 10 2000

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL AND NORTHEASTERN BLAINE COUNTY IN NORTH CENTRAL MONTANA

* UNTIL 345 PM MDT

* AT 243 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM OVER HARLEM...MOVING NORTHEAST AT 20 MPH.
A REPORT OF GOLF BALL SIZE HAIL WAS REPORTED WITH THIS STORM IN 
HARLEM. ANOTHER SEVERE STORM WAS LOCATED 8 MILES SOUTHWEST OF 
HARLEM...OR 5 MILES EAST OF ZURICH.


* THE SEVERE THUNDERSTORM OVER HARLEM WILL BE NEAR...
  5 MILES SOUTHWEST OF TURNER AT 345 PM MDT

* THE STORM EAST OF ZURICH WILL BE APPROACHING HARLEM  BY 310 PM.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN GREAT FALLS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM MDT MONDAY
AFTERNOON FOR CENTRAL MONTANA. 

LAT...LON 4858 10899 4846 10836 4881 10833 4899 10827

NWS Great Falls, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 10, 9:25 AM MDT, 5 hours 28 minutes earlier.

SOUTHWEST AND NORTH CENTRAL MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREAT FALLS MT
925 AM MDT MON JUL 10 2000
...UPDATES PLANNED FOR ZONES AND STATE...
LATEST ETA RUN CONTINUES PREVIOUS IDEA OF VEERING SW FLOW ALOFT TO MORE
WLY ON TUE. LATEST RUN IS MORE UNSTABLE FOR THIS AFTERNOON THAN
YESTERDAY MORNINGS RUN. HOWEVER CAN FIND NO SIGNIFICANT SHORTWAVES
AFFECTING AREA FOR THIS AFTERNOON. AS FAR AS UPDATES GO...WILL BACK OFF
ON POPS FOR CTB ZONE AS DOWNSLOPE WINDS HAVE DEVELOPED. SATELLITE
IMAGERY INDICATES A BAND OF MOISTURE ORIGINATING IN THE GREAT BASIN IS
AFFECTING FAR SE PORTION OF THE FORECAST AREA SO WILL BUMP UP POPS AT
WEY. FOR HVR AND LWT ZONES LATEST ETA FORECAST SOUNDINGS FOR 00Z TUE
INDICAT CAPES STILL IN EXCESS OF 1000 JOULES PER KG OVER AREA. SHEAR
WILL NOT BE AS GREAT AS YESTERDAY BUT AIRMASS IS STILL QUITE MOIST. PLAN
ON MENTIONING THREAT OF GUSTY WINDS AND SMALL HAIL WITH THUNDERSTORMS.
WITH DOWNSLOPE WINDS WILL RAISE HIGH AT CTB A COUPLE OF DEGREES.
OTHERWISE FORECAST HIGHS FOR TODAY LOOK IN BALLPARK.

.EXTENDED...RIDGE IS THE PREDOMINATE WEATHER MAKER THROUGH THE PERIOD
ALTHOUGH THE AXIS DOES SHIFT EASTWARD WITH TIME. WARM AND DRY CONDITIONS
ARE EXPECTED THROUGH DAYS 3 AND 4 AS 700MB TEMPS WARM CONSIDERABLY.
SHOWERS AND THUNDERSTORMS ARE POSSIBLE ON DAY 5 AS ANOTHER TROF STARTS
TO SWING THROUGH BC INCREASING THE SW FLOW OVER THE AREA ONCE AGAIN.
CURRENT EXTENDED LOOKS GOOD WITH ONLY MINIMAL CHANGES. GOUDSWARD

BLANK

CCF NUMBERS
GTF BU 082/052 084/055 091 052000
CTB BU 077/048 080/050 087 051100
HLN BU 084/050 086/055 092 052000
BZN BU 083/048 086/050 090 052020
WEY BU 077/040 080/044 086 053020
DLN BU 082/048 084/050 088 052010
HVR BU 082/054 085/056 093 053100
LWT BU 080/052 084/052 091 053100

Severe Thunderstorm Warnings in Montana, 2000Every severe thunderstorm warning 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.