Alert archive / Ohio / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 18, NWS Northern Indiana

April 10, 1999Defiance County, Williams County, Ohio

NWS Northern Indiana issued this severe thunderstorm warning at Apr 10, 1999, 10:04 PM EDT for Defiance County, Williams County, Ohio. It was in force for 66 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 10, 1999, 10:04 PM EDT (02:04 UTC)
Expired
Apr 10, 1999, 11:10 PM EDT
In force
66 min
Issued by
NWS Northern Indiana
Area
Whole counties

Counties Defiance County, OH, Williams County, OH

What was reported inside it

TimeReportWhereRemark
Apr 10, 10:15 PM EDTThunderstorm WindHicksville, OHTrees and power lines were reported blown down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 2.1 hours before the alert went out and 232 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, Cncnati-Daytn, OH at 00:00Z on 1999-04-11Temperature 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, Cncnati-Daytn, OH at 00:00Z on 1999-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 square meters per square second.1939587897117Sfc1 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
1256 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
129 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.

NWS Northern Indiana wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 10, 3:25 PM EDT, 6 hours 39 minutes earlier.

Area forecast discussion, Apr 10, 3:25 PM EDT, 6 hours 39 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
225 PM EST SAT APR 10 1999

SORRY FOR THE LATE AND BRIEF AFD...BEEN DEALING WITH CRS.

ETA AND NGM IN GOOD AGREEMENT THROUGH TOMORROW MORNING WITH BRINGING
LOW EASTWARD INTO NORTHERN OHIO. SEVERE THREAT LOOKS QUITE SMALL IN
IWX CWA...WILL NOT MENTION STRONG OR SEVERE IN IWX ZONES.
ELEVATED GENERAL THUNDER IS STILL A GOOD BET THOUGH.

LOW MOVES ON BY TOMORROW KEEPING US COOL AND SHOWERY. WRAP-AROUND
MOISTURE TOMORROW NIGHT WILL CONTINUE THE SCATTERED SHOWERS.
THICKNESSES AND 850 TEMPS INDICATE A FEW FLAKES OF SNOW COULD MIX IN
WITH THE SHOWERS LATE SUNDAY NIGHT BUT ITS NOT SIGNIFICANT ENOUGH TO
WARRANT DEPRESSING THE PUBLIC BY MENTIONING IT IN THE FORECAST.

MONDAY WILL CONTINUE COOL AND CLOUDY AS LOW PRESSURE SPINS TO OUR
NORTHEAST AND HIGH PRESSURE SETTLES DOWN INTO THE UPPER PLAINS.

PREFER COOLER FAN/FMR TEMPS OVER FWC.

SBN WC 040/051 033/052 033 12754
FWA WC 041/052 035/053 034 12754
AOH WC 043/053 037/055 036 12754

.IWX...NONE

REAUGH

In the hours before

Local storm report, Apr 10, 8:09 PM EDT, 1 hour 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
709 PM EST SAT APR 10 1999

TIME(EST)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0z705 PM    1 N SOUTH BEND            IN    1.25 INCH HAIL
04/10/99   ST.JOSEPH                       SPOTTER REPORT
Local storm report, Apr 10, 8:09 PM EDT, 1 hour 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
709 PM EST SAT APR 10 1999

TIME(EST)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0z705 PM    1 N SOUTH BEND            IN    1.25 INCH HAIL
04/10/99   ST.JOSEPH                       SPOTTER REPORT
Local storm report, Apr 10, 8:55 PM EDT, 1 hour 9 minutes before
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Local storm report, Apr 10, 8:55 PM EDT, 1 hour 9 minutes before
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Local storm report, Apr 10, 9:50 PM EDT, 14 minutes before
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Local storm report, Apr 10, 9:50 PM EDT, 14 minutes before
<!doctype html>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 10, 8:01 PM EDTSevere Thunderstorm WarningIWXStarke59 min
Apr 10, 8:14 PM EDTSevere Thunderstorm WarningIWXPulaski61 min
Apr 10, 8:23 PM EDTTornado WarningIWXMarshall67 min
Apr 10, 8:25 PM EDTSevere Thunderstorm WarningIWXElkhart65 min
Apr 10, 8:40 PM EDTSevere Thunderstorm WarningIWXSaint Joseph25 min
Apr 10, 8:45 PM EDTSevere Thunderstorm WarningIWXFulton65 min
Apr 10, 9:01 PM EDTSevere Thunderstorm WarningIWXKosciusko64 min
Apr 10, 9:42 PM EDTSevere Thunderstorm WarningIWXDeKalb, Steuben63 min
Apr 10, 9:42 PM EDTSevere Thunderstorm WarningIWXWhitley63 min
Apr 10, 9:56 PM EDTSevere Thunderstorm WarningIWXAllen64 min
Apr 11, 1:05 AM EDTSevere Thunderstorm WarningIWXMiami35 min
Apr 10, 10:12 PM EDTSevere Thunderstorm WarningIWXPaulding63 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1999Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.