Alert archive / Ohio / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 93, NWS Wilmington, OH

July 9, 1999Auglaize County, Shelby County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jul 9, 1999, 6:00 PM EDT for Auglaize County, Shelby County, Ohio. It was in force for 35 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: Jul 9, 1999, 6:00 PM EDT (22:00 UTC)
Expired: Jul 9, 1999, 6:35 PM EDT
In force: 35 min
Issued by: NWS Wilmington, OH
Area: Whole counties

Counties Auglaize County, OH, Shelby County, OH

The radar

The Cincinnati radar (KILN), 119 km from the middle of the area, began a volume at 22:01 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

Time	Report	Where	Remark
Jul 9, 6:10 PM EDT	Thunderstorm Wind 50	Wapakoneta, OH	Trees downed.
Jul 9, 6:33 PM EDT	Thunderstorm Wind 60	Jackson Center, OH	Roofs were damaged on several buildings and trees were knocked 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jul 9, 5:15 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.0 hours before the alert went out and 118 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: 1992 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 252 m²/s²
0-3 km storm-relative helicity: 257 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 Wilmington, OH wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 9, 3:42 PM EDT, 2 hours 18 minutes earlier.

Area forecast discussion, Jul 9, 3:42 PM EDT, 2 hours 18 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON OH
342 PM EDT FRI JUL 9 1999

CLEMISILN ALREADY OUT.

NGM AND ETA ARE SIMILAR THIS RUN ON TIMING OF COLD FRONT DROPPING
ACROSS FA AND 300 JET MAX.

NGM DEWPOINTS WERE UNDER DONE AGAIN THIS RUN...PLACING 60 DEWPOINTS
WERE 70 WERE OBSERVED. THEREFORE NGM CAPES AND INSTABILITIES ARE WAY
UNDERESTIMATED.

MEANWHILE ETA IS THE ONLY MODEL WHICH HAS THE TAIL OF THE 850 MB JET
MAX ACROSS WV INTO KY.  WITH THIS JET...THE ETA PRODUCES A STRONG
850 CONVERGENT AREA AND COMBINES IT WITH THE UPPER LEVEL DIVERGENCE
TO PRODUCE A WIDE AREA OF UPPER VELOCITIES.

THINK THAT THE ETA MIGHT BE A LITTLE TO AGGRESSIVE WITH THE 850
WINDS...SO WILL TREND TOWARDS THE ETA SOLUTION...POSITION OF THE
QPF...BUT WILL TAPER IT DOWN A LITTLE.

WILL CONTINUE WITH LIKELY POPS IN THE WEST...BUT WILL GO HIGH CHANCE
IN THE EAST...WHERE THE FORCING IS A LITTLE WEAKER.

FRONT IS LOCATED FROM SOUTH OF CMH-DAY BY 12Z SATURDAY...SO WILL
CONTINUE WITH THE POPS IN THE SOUTHERN COUNTIES.  DRY AIR PUSHES IN
FOR SATURDAY NIGHT AND SUNDAY.

NGM MOS TEMPERATURES IN THE BALLPARK FOR THE FIRST 3 PERIODS...BUT A
LOOK LITTLE WARM FOR SUNDAY...CONSIDERING THAT THE THE 850
TEMPERATURES WILL BE ABOUT 10 C.

.ILN...NONE

SITES

In the hours before

Local storm report, Jul 9, 5:26 PM EDT, 34 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, Jul 9, 5:51 PM EDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OHIO
551 PM EDT FRI JUL 09 1999

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

0541 PM    ADA 1 E                   OH   WIND DAMAGE
07/09/99   HARDIN                         TELEVISION TOWER BLOWN
                                          DOWN AND ROOF DAMAGE.
                                          POSSIBLE TORNADO
                                          TOUCHDOWN.

DIAN-RRE

Local storm report, Jul 9, 5:51 PM EDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OHIO
551 PM EDT FRI JUL 09 1999

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

0541 PM    ADA 1 E                   OH   WIND DAMAGE
07/09/99   HARDIN                         TELEVISION TOWER BLOWN
                                          DOWN AND ROOF DAMAGE.
                                          POSSIBLE TORNADO
                                          TOUCHDOWN.

DIAN-RRE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 5:01 PM EDT	Severe Thunderstorm Warning	ILN	Hardin	44 min
Jul 9, 6:34 PM EDT	Severe Thunderstorm Warning	ILN	Champaign	61 min
Jul 9, 6:58 PM EDT	Tornado Warning	ILN	Miami	32 min
Jul 9, 7:04 PM EDT	Severe Thunderstorm Warning	ILN	Montgomery, Preble	66 min
Jul 9, 7:14 PM EDT	Severe Thunderstorm Warning	ILN	Union	46 min
Jul 9, 7:31 PM EDT	Severe Thunderstorm Warning	ILN	Clark	59 min
Jul 9, 7:44 PM EDT	Severe Thunderstorm Warning	ILN	Franklin	66 min
Jul 9, 7:51 PM EDT	Severe Thunderstorm Warning	ILN	Licking	64 min
Jul 9, 6:48 PM EDT	Severe Thunderstorm Warning	ILN	Wayne	47 min
Jul 9, 7:53 PM EDT	Severe Thunderstorm Warning	ILN	Franklin	47 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1999 Every 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; radar from the NEXRAD Level II archive.