Alert archive / Kentucky / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 59, NWS Wilmington, OH

May 13, 1998Mason County, Kentucky

NWS Wilmington, OH issued this severe thunderstorm warning at May 13, 1998, 9:18 PM EDT for Mason County, Kentucky. It was in force for 47 min. 2 reports 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
May 13, 1998, 9:18 PM EDT (01:18 UTC)
Expired
May 13, 1998, 10:05 PM EDT
In force
47 min
Issued by
NWS Wilmington, OH
Area
Whole counties

County Mason County, KY

The radar

The Cincinnati radar (KILN), 92 km from the middle of the area, began a volume at 01:21 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
May 13, 9:25 PM EDTHail 2.5Germantown, KY
May 13, 9:25 PM EDTThunderstorm Wind 50Germantown, KYTrees downed.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 13, 4:15 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 1.3 hours before the alert went out and 93 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 1998-05-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 470 joules per kilogram.LCLLFCEL10008507005003002001001 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 1998-05-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 202 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
470 J/kg
Mixed-layer CIN
-132 J/kg
Mixed-layer LCL
1112 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
202 m²/s²
0-3 km storm-relative helicity
390 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

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 Wilmington, OH wrote its last area forecast discussion before this severe thunderstorm warning went out at May 13, 8:59 PM EDT, 19 minutes earlier.

Area forecast discussion, May 13, 8:59 PM EDT, 19 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

In the hours before

Local storm report, May 13, 7:36 PM EDT, 1 hour 42 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OHIO
736 PM EDT WED MAY 13 1998

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

0735 PM    BETHEL                    OH   1 INCH HAIL
05/13/98   CLERMONT                       PEA TO QUARTER-SIZED HAIL
                                          REPORTED BY WEATHER
                                          SPOTTER.
Local storm report, May 13, 7:59 PM EDT, 1 hour 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OHIO
759 PM EDT WED MAY 13 1998

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

0755 PM    6 NW WILMINGTON           OH   1 INCH HAIL
05/13/98   CLINTON                        REPORTED BY HAM RADIO
                                          SPOTTER.
Special weather statement, May 13, 8:10 PM EDT, 1 hour 8 minutes before
OHZ015-016-024>026-034-035-042>046-051>056-060>065-070>074-077>082-
088-INZ050-058-059-066-073>075-080-KYZ089>100-140200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
810 PM EDT WED MAY 13 1998

SEVERE THUNDERSTORM WATCH FOR AREAS NORTH OF DAYTON AND COLUMBUS
HAVE BEEN CANCELLED. THE WATCH FOR SOUTHEAST INDIANA...NORTHERN
KENTUCKY AND SOUTHWEST...CENTRAL AND SOUTH-CENTRAL OHIO CONTINUES IN
EFFECT.

STRONG TO SEVERE THUNDERSTORMS CONTINUE TO MOVE ACROSS PORTIONS OF
SOUTHERN OHIO. THESE STORMS WILL CONTINUE TO MOVE SOUTHEAST. MANY OF
THE STORMS THIS EVENING HAVE PRODUCED LARGE HAIL...SOME THE SIZE OF
BASEBALLS. EXPECT AREAS STILL IN THE WATCH TO EXPERIENCE STRONG TO
SEVERE THUNDERSTORMS THROUGH AT LEAST 10 PM.

DISTEFANO
Local storm report, May 13, 8:13 PM EDT, 1 hour 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OHIO
813 PM EDT WED MAY 13 1998

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

0754 PM    HILLSBORO                 OH   .75 INCH HAIL
05/13/98   HIGHLAND                       REPORTED BY HAM OPERATOR

0754 PM    HILLSBORO                 OH   WIND DAMAGE
05/13/98   HIGHLAND                       ROOF OFF AUTO DEALERSHIP

HUGHES
Local storm report, May 13, 8:47 PM EDT, 31 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Local storm report, May 13, 8:53 PM EDT, 25 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 13, 8:47 PM EDTSevere Thunderstorm WarningILNClermont48 min
May 13, 8:30 PM EDTTornado WarningILNMason50 min
May 13, 8:49 PM EDTSevere Thunderstorm WarningILNBracken61 min
May 13, 8:53 PM EDTSevere Thunderstorm WarningILNKenton62 min
May 13, 9:09 PM EDTSevere Thunderstorm WarningILNRobertson61 min
May 13, 9:24 PM EDTSevere Thunderstorm WarningILNGrant51 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 1998Every severe thunderstorm warning in 1998

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; radar from the NEXRAD Level II archive.