Alert archive / Montana / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 5, NWS Missoula, MT

May 28, 1993Lincoln County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at May 28, 1993, 6:59 PM MDT for Lincoln County, Montana. It was in force for 61 min.

The area

The counties it named.

The facts

Issued: May 28, 1993, 6:59 PM MDT (00:59 UTC)
Expired: May 28, 1993, 8:00 PM MDT
In force: 61 min
Issued by: NWS Missoula, MT
Area: Whole counties

County Lincoln County, MT

The nearest sounding before it

Spokane, WA (KOTX), launched 00:00Z, 1.0 hours before the alert went out and 119 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1728 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: 302 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 28, 4:15 PM MDT, 2 hours 44 minutes before

SPECIAL WEATHER STATEMENT...COR...
NATIONAL WEATHER SERVICE MISSOULA, MT
415 PM MDT FRI MAY 28 1993

...SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR WESTERN MONTANA TONIGHT...

RADAR INDICATED VERY STRONG THUNDERSTORMS AND HEAVY RAIN SHOWERS WERE IN
NORTHERN IDAHO AND CLEARWATER COUNTIES MOVING NORTH TOWARD MINERAL...
SANDERS AND MISSOULA COUNTIES IN MONTANA. FREQUENT DANGEROUS LIGHTNING
LARGE HAIL AND STRONG WINDS ARE EXPECTED WITH THESE THUNDERSTORMS. IF
YOUR IN THE PATH OF THESE STORMS SEEK SHELTER. LISTEN TO THIS STATION FOR
FURTHER IMFOMATION AS THEY DEVELOPE.
END/RDE

Special weather statement, May 28, 4:42 PM MDT, 2 hours 17 minutes before

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Special weather statement, May 28, 4:45 PM MDT, 2 hours 14 minutes before

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Special weather statement, May 28, 4:59 PM MDT, 2 hours before

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Special weather statement, May 28, 5:00 PM MDT, 1 hour 59 minutes before

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Special weather statement, May 28, 6:24 PM MDT, 35 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 1:17 PM MDT	Tornado Warning	MSO	Lewis and Clark	28 min

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.