Alert archive / Indiana / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 2, NWS Northern Indiana

April 12, 1994Allen County, Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Apr 12, 1994, 8:23 PM EST for Allen County, Indiana. It was in force for 37 min.

The area

The counties it named.

The facts

Issued
Apr 12, 1994, 8:23 PM EST (01:23 UTC)
Expired
Apr 12, 1994, 9:00 PM EST
In force
37 min
Issued by
NWS Northern Indiana
Area
Whole counties

County Allen County, IN

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 00:00Z, 1.4 hours before the alert went out and 151 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, Dayton/James M C, OH at 00:00Z on 1994-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 532 joules per kilogram.LCLEL10008507005003002001001 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, Dayton/James M C, OH at 00:00Z on 1994-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 272 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
532 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
964 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
272 m²/s²
0-3 km storm-relative helicity
303 m²/s²
Significant tornado parameter
0.9
Supercell composite
4.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFWA 130123
SVRFWA
INC003-130200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE FORT WAYNE IN
823 PM EST TUE APR 12 1994

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 900 PM EST FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE NORTHEAST PART OF INDIANA
      ALLEN

AT 815 PM EST RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES
SOUTHWEST OF FORT WAYNE INDIANA. THESE STORM WAS MOVING NORTHEAST
AT 30 MILES AN HOUR.

PEOPLE IN THE AREA AROUND THE CITY OF FORT WAYNE
SHOULD LOOK FOR SHELTER IN A STRONG BUILDING.  DO NOT STAND NEAR
WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES UNTIL THE
STORM HAS PASSED.  MOTORISTS SHOULD AVOID LOW WATER CROSSINGS.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BU0SINESS. HEAVY RAINS FLOOD ROADWAYS QUICKLY...AVOID
DRIVING INTO AREAS WHERE WATER COVERS THE ROAD.

HAYES

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 12, 6:33 PM EST, 1 hour 50 minutes before
INZ004-005-MIZ078-079-130125-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SOUTH BEND IN
630 PM EST TUE APR 12 1994

...THUNDERSTORMS MOVING THROUGH MICHIANA THIS EVENING...

AT 625 PM EST...RADAR INDICATED AN AREA OF THUNDERSTORMS 10 MILES
WIDE EXTENDING FROM 7 MILES NORTH OF SOUTH BEND INDIANA...TO 50 MILES
NORTH OF SOUTH BEND INDIANA...OR 15 MILES NORTH NORTHWEST OF PAW PAW
MICHIGAN...TO JUST OVER EDWARDSBURG MICHIGAN. THE STORMS ARE MOVING TO
THE NORTHEAST AT 30 MILES AND HOUR.

THESE STORMS WILL PRODUCE BRIEF HEAVY RAIN...DANGEROUS LIGHTNING AND
POSSIBLE SMALL HAIL. SEEK SAFE SHELTER UPON THE APPROACH OF THESE
STORMS. STAY AWAY FROM WINDOWS AND ELECTRICAL APPLIANCES.

GALLAGHER
Special weather statement, Apr 12, 7:14 PM EST, 1 hour 9 minutes before
INZ006>009-017-018-024>027-032>034-OHZ001-004-015-130115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WAYNE IN
712 PM EST TUE APR 12 1994

...THUNDERSTORMS WERE MOVING TOWARD NORTHEAST INDIANA...

AT 705 PM EST/805 EDT...A THUNDERSTORM WAS LOCATED 20 MILES SOUTHEAST
OF SOUTH BEND INDIANA. THIS STORM WAS MOVING NORTHEAST AT 30 MILES AN
HOUR. IT CONTAINED DANGEROUS LIGHTNING AND BRIEF HEAVY RAIN.

BY 815 PM EST OR 915 PM EDT...THIS THUNDERSTORM WILL BE LOCATED 50
MILES NORTH OF FORT WAYNE OR NEAR HOWE IN LAGRANGE COUNTY INDIANA.
STAY INSIDE AS THIS STORM MOVES ACROSS YOUR AREA OF NORTHEAST INDIANA.

THUNDERSTORMS WERE FORMING ON A LINE FROM 25 MILES NORTH OF KOKOMO
INDIANA TO NEAR GRAND RAPIDS MICHIGAN. STAY TUNED TO NOAA WEATHER RADIO
FOR UPDATES.

HAYES
Special weather statement, Apr 12, 7:52 PM EST, 31 minutes before
INZ004-005-MIZ078-079-130245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SOUTH BEND IN
745 PM EST TUE APR 12 1994

...THUNDERSTORMS WERE MOVING THROUGH MICHIANA THIS EVENING...

AT 740 PM EST...RADAR INDICATED AN AREA OF THUNDERSTORMS 10 MILES
WIDE EXTENDING FROM 20 MILES EAST OF SOUTH BEND INDIANA...TO 10 MILES
NORTHEAST OF GRAND RAPIDS MICHIGAN. THE STORMS WERE MOVING TO THE
NORTHEAST AT 30 MILES AND HOUR.

THESE STORMS HAVE PRODUCED PEA SIZE TO 1/2 INCH HAIL AS THEY MOVED
THROUGH CASS COUNTY MICHIGAN AT 640 PM EST/740 PM EDT.

THESE STORMS WILL PRODUCE BRIEF HEAVY RAIN...DANGEROUS LIGHTNING AND
HAIL. SEEK SHELTER IN A SAFE STRUCTURE AS THESE STORMS APPROACH YOUR
AREA. REPORT ANY SIGNIFICANT WEATHER TO YOUR NEAREST LAW ENFORCEMENT
OFFICE FOR RELAY TO THE NATIONAL WEATHER SERVICE.
GALLAGHER

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 12, 9:02 PM ESTSevere Thunderstorm WarningIWXDeKalb28 min
Apr 12, 9:13 PM ESTSevere Thunderstorm WarningIWXSteuben32 min

Nearby

Severe Thunderstorm Warnings in Indiana, 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.