Alert archive / Ohio / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 203, NWS Wilmington, OH

July 18, 20195 counties in Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jul 18, 2019, 3:48 PM EDT for 5 counties in Ohio. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 18, 2019, 3:48 PM EDT (19:48 UTC)
Expired: Jul 18, 2019, 4:15 PM EDT
In force: 27 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Auglaize County, OH, Darke County, OH, Mercer County, OH, Miami County, OH, Shelby County, OH

The radar

The Cincinnati radar (KILN), 111 km from the middle of the area, began a volume at 19:50 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.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.8 hours before the alert went out and 111 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: 262 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 955 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 18, 2:22 PM EDT, 1 hour 26 minutes earlier.

Area forecast discussion, Jul 18, 2:22 PM EDT, 1 hour 26 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>

Hazardous weather outlook, Jul 18, 4:49 AM EDT, 10 hours 59 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

Special weather statement, Jul 18, 2:53 PM EDT, 55 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>

Special weather statement, Jul 18, 3:09 PM EDT, 39 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>

Special weather statement, Jul 18, 3:13 PM EDT, 35 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>

Special weather statement, Jul 18, 3:18 PM EDT, 30 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 18, 3:31 PM EDT, 17 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>

Special weather statement, Jul 18, 3:40 PM EDT, 8 minutes before

Special Weather Statement
National Weather Service Wilmington OH
340 PM EDT Thu Jul 18 2019

OHZ026-034-035-042>044-051-182015-
Auglaize OH-Darke OH-Logan OH-Shelby OH-Hardin OH-Mercer OH-Miami OH-
340 PM EDT Thu Jul 18 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SHELBY...NORTHWESTERN
LOGAN...NORTHERN DARKE...CENTRAL AUGLAIZE...SOUTHWESTERN HARDIN...
SOUTHERN MERCER AND NORTHWESTERN MIAMI COUNTIES UNTIL 415 PM EDT...

At 339 PM EDT, radar indicated strong thunderstorms along a line
extending from near Chippewa Park to Fort Loramie to 6 miles
northwest of Union City, moving southeast at 25 mph.

STORM HAZARDS INCLUDE...
Winds to 45 mph...
Very heavy rain...

Locations impacted include...
Sidney, Piqua, Bellefontaine, Wapakoneta, New Bremen, Minster,
Versailles, St. Henry, Newport, Union City, Anna, Fort Loramie,
Jackson Center, Russells Point, De Graff, Ansonia, Botkins, Lakeview,
New Knoxville and Waynesfield.

This includes I-75 in Ohio between mile markers 85 and 113.

Water will pond on roads and may quickly fill roadside ditches and
small streams.

To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.

LAT...LON 4053 8360 4027 8396 4027 8401 4021 8404
      4012 8475 4016 8481 4038 8480 4045 8447
      4064 8407 4065 8388 4068 8388
TIME...MOT...LOC 1939Z 305DEG 22KT 4058 8389 4036 8436 4028 8490

Hickman

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 8:46 PM EDT	Areal Flood Advisory	ILN	Hocking	3 hr
Jul 18, 3:42 AM EDT	Excessive Heat Warning	ILN	Adams, Auglaize, Brown, Butler, Champaign, Clark and 26 more	4 days
Jul 18, 2:16 PM EDT	Special Weather Statement	ILN	Hamilton	29 min
Jul 18, 2:50 PM EDT	Special Weather Statement	ILN	Darke	25 min
Jul 18, 2:53 PM EDT	Special Weather Statement	ILN	Hamilton	37 min
Jul 18, 2:59 PM EDT	Areal Flood Advisory	ILN	Butler, Hamilton	3 hr
Jul 18, 3:13 PM EDT	Special Weather Statement	ILN	Auglaize, Mercer	32 min
Jul 18, 3:18 PM EDT	Special Weather Statement	ILN	Clermont	27 min
Jul 18, 3:40 PM EDT	Special Weather Statement	ILN	Auglaize, Shelby	35 min
Jul 18, 4:14 PM EDT	Special Weather Statement	ILN	Miami	31 min
Jul 18, 4:29 PM EDT	Special Weather Statement	ILN	Union	31 min
Jul 18, 4:33 PM EDT	Special Weather Statement	ILN	Clinton, Warren	27 min
Jul 18, 4:41 PM EDT	Flash Flood Warning	ILN	Butler	71 min
Jul 18, 4:44 PM EDT	Special Weather Statement	ILN	Delaware, Union	31 min
Jul 18, 4:57 PM EDT	Special Weather Statement	ILN	Clinton	33 min
Jul 18, 5:13 PM EDT	Special Weather Statement	ILN	Delaware	32 min
Jul 18, 3:09 PM EDT	Special Weather Statement	ILN	Campbell	36 min
Jul 18, 4:19 PM EDT	Special Weather Statement	ILN	Kenton, Pendleton	26 min
Jul 18, 4:35 PM EDT	Severe Thunderstorm Warning	ILN	Boone, Campbell, Grant, Kenton, Pendleton	40 min
Jul 18, 5:10 PM EDT	Special Weather Statement	ILN	Pendleton	35 min
Jul 18, 5:45 PM EDT	Special Weather Statement	ILN	Grant	30 min
Jul 17, 9:14 PM EDT	Special Weather Statement	ILN	Dearborn, Ohio	31 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2019 Every severe thunderstorm warning in 2019

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; radar from the NEXRAD Level II archive.