Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 1, NWS Green Bay, WI

April 15, 1994Columbia County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Apr 15, 1994, 12:06 AM CDT for Columbia County, Wisconsin. It was in force for 54 min.

The area

The counties it named.

The facts

Issued
Apr 15, 1994, 12:06 AM CDT (05:06 UTC)
Expired
Apr 15, 1994, 1:00 AM CDT
In force
54 min
Issued by
NWS Green Bay, WI
Area
Whole counties

County Columbia County, WI

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 5.1 hours before the alert went out and 373 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, Minneapolis, MN at 00:00Z on 1994-04-15Temperature 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, Minneapolis, MN at 00:00Z on 1994-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.1939587897Sfc1 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
2199 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
178 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, Apr 15, 12:03 AM CDT, 3 minutes before
WIZ050-150700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1200 AM CDT FRI APR 15 1994

...STRONG THUNDERST0RMS HEADED TOWARD MANITOWOC COUNTY...

AT 1150 PM...STRONG THUNDERSTORMS WERE LOCATED ABOUT 30 MILES
SOUTHWEST OF MANITOWOC OR NEAR PLYMOUTH IN SHEBOYGAN COUNTY.  THESE
STORMS WERE MOVING TO THE NORTH AROUND 40 MPH AND WILL BE MOVING INTO
THE CITY OF MANITOWOC BY 1 AM CDT.

THESE STORMS LIKELY CONTAIN HEAVY RAINS...STROBNG WINDS...SMALL HAIL
AND DEADLY LIGHTNING.

IF THREATENING WEATHER APPROACHES...SEEK SAFE SHELTER INDOORS.
BOATERS ON AREA LAKES AND THE LAKESHORE AREA SHOULD HEAD FOR
SHORE IMMEDIATELY.

ISAACSON

The office that day

Everything else NWS Green Bay, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 15, 12:16 AM CDTSevere Thunderstorm WarningGRBRock59 min
Apr 15, 12:39 AM CDTSevere Thunderstorm WarningGRBJuneau66 min
Apr 15, 12:55 AM CDTSevere Thunderstorm WarningGRBDane65 min
Apr 15, 2:10 AM CDTSevere Thunderstorm WarningGRBWinnebago35 min
Apr 15, 2:30 AM CDTSevere Thunderstorm WarningGRBDane, Iowa45 min
Apr 15, 2:56 AM CDTSevere Thunderstorm WarningGRBGreen49 min
Apr 15, 3:08 AM CDTSevere Thunderstorm WarningGRBColumbia52 min
Apr 15, 3:22 AM CDTSevere Thunderstorm WarningGRBDane53 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 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.