Alert archive / Montana / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 3, NWS Great Falls, MT

May 27, 1994Blaine County, Montana

NWS Great Falls, MT issued this severe thunderstorm warning at May 27, 1994, 5:48 PM MDT for Blaine County, Montana. It was in force for 57 min.

The area

The counties it named.

The facts

Issued
May 27, 1994, 5:48 PM MDT (23:48 UTC)
Expired
May 27, 1994, 6:45 PM MDT
In force
57 min
Issued by
NWS Great Falls, MT
Area
Whole counties

County Blaine County, MT

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 11.8 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-pSkew-T log-p diagram, Great_falls, MT at 12:00Z on 1994-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Great_falls, MT at 12:00Z on 1994-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -25 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1569 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-25 m²/s²
0-3 km storm-relative helicity
29 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

Special weather statement, May 27, 1:18 PM MDT, 4 hours 30 minutes before
MTZ004-272015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HELENA MT
120 PM MDT FRI MAY 27 1994

...THUNDERSTORMS DEVELOPING ACROSS PORTIONS OF SOUTHWEST MONTANA...

AT 115 P.M., SCATTERED SHOWERS AND THUNDERSTORMS WERE INCREASING OVER
SOUTHWEST MONTANA. THE STRONGEST STORM WAS LOCATED OVER NORTHERN MADISON
COUNTY, 20 MILES SOUTHEAST OF BUTTE. THIS STORM HAS PRODUCED SMALL HAIL
GUSTY WINDS AND BRIEF HEAVY RAIN IN THE PAST HOUR IN NORTHERN MADISON
COUNTY. THIS THUNDERSTORM IS MOVING NORTHEAST AT 25 MPH AND WILL MOVE IN
SOUTHERN JEFFERSON AND BROADWATER COUNTIES WITHIN THE NEXT 30 MINUTES.

THUNDERSTORMS WILL CONTINUE TO DEVELOP THIS AFTERNOON AS A COLD FRONT
APPROACHES FROM THE WEST. THESE STORMS WILL HAVE THE POTENTIAL OF
PRODUCING SMALL HAIL, DANGEROUS LIGHTNING, GUSTY WINDS AND BRIEF HEAVY
RAIN.

PERSONS OUT BOATING OR WITH OTHER OUTDOOR INTEREST SHOULD SEEK SHELTER
WHEN A STORM IS APPROACHING. STAY ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS THIS AFTERNOON AS STORMS CAN DEVELOP AND APPROACH RAPIDLY.
STAY TUNED TO THIS SOURCE FOR THE LASTEST WEATHER STATEMENTS OR POSSIBLE
WARNINGS.

FOSTER

&
Special weather statement, May 27, 2:38 PM MDT, 3 hours 10 minutes before
MTZ004-272245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HELENA MT
241 PM MDT FRI MAY 27 1994

...THUNDERSTORMS MOVING THROUGH SOUTHWEST MONTANA...

AT 235 P.M., SHOWERS AND SCATTERED THUNDERSTORMS WERE COVERING MUCH OF
SOUTHWEST MONTANA. THE STRONGEST STORMS WERE LOCATED FROM CANYON FERRY
LAKE IN EASTERN BROADWATER COUNTY SOUTHEAST INTO NORTHERN GALLATIN
COUNTY NEAR BOZEMAN. THESE STORMS HAVE PRODUCED SMALL HAIL UP TO ONE
HALF INCH, STRONG GUSTY WINDS, DANGEROUS LIGHTNING AND BRIEF HEAVY RAIN
AS THEY MOVED THROUGH WHITEHALL AND TOWNSEND DURING THE PAST HOUR.
THESE STORMS WILL CONTINUE MOVING NORTHEAST AT 25 MPH INTO MEAGHER
COUNTY.

SHOWERS AND SCATTERED THUNDERSTORMS WILL CONTINUE FOR THE NEXT FEW HOURS
AS A COLD FRONT MOVES THROUGH SOUTHWEST MONTANA. A FEW THUNDERSTORMS
COULD PRODUCE SMALL HAIL AND STRONG GUSTY WINDS.

STAY ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS THIS AFTERNOON AND
SEEK SHELTER WHEN A STOfRM IS APPROACHING. STAY TUNED TO THIS SOURCE FOR
THE LASTEST WEATHER INFORMATION.

FOSTER

&

The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 4:49 PM MDTSevere Thunderstorm WarningTFXFergus41 min

Nearby

Severe Thunderstorm Warnings in Montana, 1994Every severe thunderstorm warning in 1994

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.