Alert archive / Montana / Tornado Warnings in 1993

Tornado Warning 5, NWS Great Falls, MT

August 16, 1993Blaine County, Hill County, Montana

NWS Great Falls, MT issued this tornado warning at Aug 16, 1993, 7:06 PM MDT for Blaine County, Hill County, Montana. It was in force for 52 min.

The area

The counties it named.

The facts

Issued: Aug 16, 1993, 7:06 PM MDT (01:06 UTC)
Expired: Aug 16, 1993, 7:58 PM MDT
In force: 52 min
Issued by: NWS Great Falls, MT
Area: Whole counties

Counties Blaine County, MT, Hill County, MT

The nearest sounding before it

Great_falls, MT (KTFX), launched 00:00Z, 1.1 hours before the alert went out and 143 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 19 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 1136 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -47 m²/s²
0-3 km storm-relative helicity: -43 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KGTF 170107
TORHVR
MTC005-041-170200-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HAVRE MT
ISSUED BY GREAT FALLS MT
706 PM MDT MON AUG 16 1993
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  800 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTH CENTRAL MONTANA
 
   ...NORTHERN BLAINE COUNTY...NORTHERN HILL COUNTY
 
A TORNADO WAS OBSERVED ON THE GROUND EAST OF KREMLIN AROUND 7 PM.
THE TORNADO HAS SINCE LIFTED OFF THE GROUND. THE THUNDERSTORMS THAT
PRODUCED THIS TORNADO ARE MOVING TO THE NORTH AROUND 30 MPH AND ARE
CAPABLE OF PRODUCING MORE TORNADOS.
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING.  AS An LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH
OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
 
 
 
DLB

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Aug 16, 1:15 PM MDT, 5 hours 51 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE HAVRE MT
115 PM MDT MON AUG 16 1993

STORM REPORT FOR AUG 15TH:

MDT
900 PM TO 12 M   12S HOGELAND       3/4 INCH SIZE HAIL...WIND...AND
                 N BLAINE CO        2.3 INCHES OF RAIN. 50 PCT CROP
                                    DAMAGE. REPORT OF 2.5 INCHES OF
                                    RAIN 2 MILES W.

900 PM           7W HOGELAND        3/4 INCH SIZE HAIL...WIND GUSTS
                 N BLAINE CO        TO 40 MPH...1.9 INCHES OF RAIN.
                                    CROP DAMAGE UNCERTAIN.

800 TO 1100 PM   6W TURNER          1/2 INCH SIZE HAIL. 0.5 INCHES OF
                 N BLAINE CO        RAIN.

900 PM TO 12 M   PORT OF TURNER     WIND GUSTS TO 47 MPH. 0.3 INCHES
                 BORDER CROSSING    OF RAIN.
                 N BLAINE CO
SIMONSEN

Special weather statement, Aug 16, 2:12 PM MDT, 4 hours 54 minutes before

MTZ004-162115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HELENA MT
214 PM MDT MON AUG 16 1993

...THUNDERSTORMS MOVING THROUGH SOUTHWEST MONTANA...

AT 2 PM MDT...WEATHER RADAR INDICATED A LINE OF SHOWERS AND
THUNDERSTORMS OVER THE BIG BELT MOUNTAINS STRETCHING FROM
SOUTHWEST LEWIS AND CLARK COUNTY SOUTHEAST INTO NORTHERN
GALLATIN COUNTY. A SECOND CELL WAS LOCATED OVER THE CRAZY
MOUNTAINS IN SOUTHWEST MEAGHER COUNTY. AT 140 PM MDT...
A SPOTTER IN WINSTON...20 MILES SOUTHEAST OF HELENA IN
NORTHERN BROADWATER COUNTY...REPORTED BRIEF HEAVY RAIN
AND PEA SIZE HAIL FROM THESE STORMS AS THEY MOVED THROUGH
THE AREA. THESE STORMS WERE MOVING TO THE NORTH AT NEARLY
25 MILES AN HOUR.

SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP AND
MOVE THROUGH SOUTHWEST MONTANA THIS AFTERNOON. SOME
STORMS MAY CONTAIN HEAVY RAIN AND HAIL. IF A STORM SHOULD
APPROACH...SEEK SHELTER IN A STRONG BUILDING UNTIL IT
PASSES.

HUSTON

 "

Local storm report, Aug 16, 2:16 PM MDT, 4 hours 50 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE HAVRE MT
115 PM MDT MON AUG 16 1993

STORM REPORT FOR AUG 15TH:

MDT
900 PM TO 12 M   12S HOGELAND       3/4 INCH SIZE HAIL...WIND...AND
                 N BLAINE CO        2.3 INCHES OF RAIN. 50 PCT CROP
                                    DAMAGE. REPORT OF 2.5 INCHES OF
                                    RAIN 2 MILES W.

900 PM           7W HOGELAND        3/4 INCH SIZE HAIL...WIND GUSTS
                 N BLAINE CO        TO 40 MPH...1.9 INCHES OF RAIN.
                                    CROP DAMAGE UNCERTAIN.

800 TO 1100 PM   6W TURNER          1/2 INCH SIZE HAIL. 0.5 INCHES OF
                 N BLAINE CO        RAIN.

900 PM TO 12 M   PORT :OF TURNER     WIND GUSTS TO 47 MPH. 0.3 INCHES
                 BORDER CROSSING    OF RAIN.
                 N BLAINE CO
SIMONSEN

The office that day

Everything else NWS Great Falls, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 16, 6:20 PM MDT	Severe Thunderstorm Warning	TFX	Blaine	70 min
Aug 16, 8:06 PM MDT	Severe Thunderstorm Warning	TFX	Blaine	39 min
Aug 16, 8:56 PM MDT	Flash Flood Warning	TFX	Liberty, Toole	3 hr
Aug 16, 8:56 PM MDT	Flash Flood Warning	TFX	Blaine, Hill	3 hr

Nearby

Tornado Warnings in Montana, 1993 Every tornado warning in 1993 Tornadoes in 1993

Sources

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.