Alert archive / Montana / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 36, NWS Great Falls, MT

August 16, 1993Blaine County, Montana

NWS Great Falls, MT issued this severe thunderstorm warning at Aug 16, 1993, 6:20 PM MDT for Blaine County, Montana. It was in force for 70 min.

The area

The counties it named.

The facts

Issued: Aug 16, 1993, 6:20 PM MDT (00:20 UTC)
Expired: Aug 16, 1993, 7:30 PM MDT
In force: 70 min
Issued by: NWS Great Falls, MT
Area: Whole counties

County Blaine County, MT

The nearest sounding before it

Great_falls, MT (KTFX), launched 00:00Z, 0.3 hours before the alert went out and 163 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

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm 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 5 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 8 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 4 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, 7:06 PM MDT	Tornado Warning	TFX	Blaine, Hill	52 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

Severe Thunderstorm Warnings in Montana, 1993 Every severe thunderstorm warning 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.