Alert archive / West Virginia / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 155, NWS Pittsburgh, PA

August 13, 2018Washington County, Pennsylvania; Jefferson County, Ohio; Brooke County, Hancock County, West Virginia

NWS Pittsburgh, PA issued this severe thunderstorm warning at Aug 13, 2018, 3:37 PM EDT for Washington County, Pennsylvania; Jefferson County, Ohio; Brooke County, Hancock County, West Virginia. It was in force for 23 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: Aug 13, 2018, 3:37 PM EDT (19:37 UTC)
Expired: Aug 13, 2018, 4:00 PM EDT
In force: 23 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Jefferson County, OH, Washington County, PA, Brooke County, WV, Hancock County, WV

The radar

The Pittsburgh radar (KPBZ), 34 km from the middle of the area, began a volume at 19:40 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

Pittsburgh, PA (KAGC), launched 12:00Z, 7.6 hours before the alert went out and 38 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: 557 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 1261 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 20 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 Pittsburgh, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 13, 2:26 PM EDT, 1 hour 11 minutes earlier.

Area forecast discussion, Aug 13, 2:26 PM EDT, 1 hour 11 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, Aug 13, 3:08 AM EDT, 12 hours 29 minutes before

Hazardous Weather Outlook
National Weather Service Pittsburgh PA
308 AM EDT Mon Aug 13 2018

MDZ001-OHZ050-059-069-PAZ007>009-013>016-020>023-029-031-073>076-
WVZ001>004-012-021-509>514-140715-
Garrett-Jefferson-Belmont-Monroe-Mercer-Venango-Forest-Lawrence-
Butler-Clarion-Beaver-Allegheny-Armstrong-Indiana-Washington-Greene-
Westmoreland-Westmoreland Ridges-Fayette-Fayette Ridges-Hancock-
Brooke-Ohio-Marshall-Wetzel-Marion-Monongalia-
Ridges of Eastern Monongalia and Northwestern Preston-Preston-
Eastern Preston-Western Tucker-Eastern Tucker-
308 AM EDT Mon Aug 13 2018

This Hazardous Weather Outlook is for western Maryland, east
central Ohio, northwest Pennsylvania, southwest Pennsylvania, west
central Pennsylvania, western Pennsylvania, northern West Virginia
and northern panhandle of West Virginia.

.DAY ONE...Today and Tonight.

Scattered to numerous slow moving showers and thunderstorms are
expected today. Locally heavy rain could result in isolated flooding,
especially in the afternoon and early evening.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

OHZ039>041-048-049-057-058-068-140715-
Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Muskingum-Guernsey-
Noble-
308 AM EDT Mon Aug 13 2018

This Hazardous Weather Outlook is for east central Ohio.

.DAY ONE...Today and Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

In the hours before

Local storm report, Aug 13, 3:10 PM EDT, 27 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, Aug 13, 3:12 PM EDT, 25 minutes before

Special Weather Statement
National Weather Service Pittsburgh PA
312 PM EDT MON AUG 13 2018

PAZ031-131945-
Greene-
312 PM EDT MON AUG 13 2018

...A STRONG THUNDERSTORM CAPABLE OF PRODUCING HAIL...GUSTY WIND AND
HEAVY RAIN WILL AFFECT CENTRAL GREENE COUNTY...

At 312 PM EDT, a strong thunderstorm was located over Waynesburg,
moving southwest at 5 mph.

Wind gusts up to 45 mph and hail up to the size of nickels are
possible with this storm.

Locations impacted include...
Waynesburg...                     Rogersville...

This includes  Interstate 79 in Pennsylvania between mile markers 11
and 18.

Torrential rainfall also is occurring with this storm and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so monitor local radio or television
stations for additional information and possible warnings from the
National Weather Service.

LAT...LON 3998 8025 3994 8011 3981 8013 3991 8036
TIME...MOT...LOC 1912Z 027DEG 6KT 3993 8020

Kramar

Special weather statement, Aug 13, 3:19 PM EDT, 18 minutes before

Special Weather Statement
National Weather Service Pittsburgh PA
319 PM EDT MON AUG 13 2018

OHZ050-WVZ001-002-131945-
Jefferson-Brooke-Hancock-
319 PM EDT MON AUG 13 2018

...A STRONG THUNDERSTORM CAPABLE OF PRODUCING SMALL HAIL...GUSTY WIND
AND HEAVY RAIN WILL AFFECT NORTHEASTERN JEFFERSON...NORTH CENTRAL
BROOKE AND CENTRAL HANCOCK COUNTIES...

At 318 PM EDT, a cluster of strong thunderstorms was located near
New Cumberland, or near Weirton, moving south at 5 mph.

Wind gusts up to 45 mph and small hail are possible with this storm.

Locations impacted include...
Weirton...                        Steubenville...
Wellsville...                     Toronto...
Wintersville...                   Follansbee...
New Cumberland...                 Richmond...
Irondale...                       New Manchester...
Empire...                         Stratton...

Torrential rainfall also is occurring with this storm and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4050 8052 4034 8057 4042 8083 4056 8078
      4058 8068 4058 8067 4059 8067 4060 8062
TIME...MOT...LOC 1918Z 012DEG 6KT 4049 8059

Kramar

Special weather statement, Aug 13, 3:28 PM EDT, 9 minutes before

Special Weather Statement
National Weather Service Pittsburgh PA
328 PM EDT MON AUG 13 2018

OHZ058-132000-
Guernsey-
328 PM EDT MON AUG 13 2018

...A STRONG THUNDERSTORM CAPABLE OF PRODUCING HAIL...GUSTY WIND AND
HEAVY RAIN WILL AFFECT EAST CENTRAL GUERNSEY COUNTY...

At 328 PM EDT, a strong thunderstorm was located near Barnesville.
the storm is nearly stationary.

Wind gusts up to 55 mph and hail up to the size of nickels are
possible with this storm.

Locations impacted include...
Fairview...

This includes  Interstate 70 in Ohio between mile markers 191 and
198.

Torrential rainfall also is occurring with this storm and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so monitor local radio or television
stations for additional information and possible warnings from the
National Weather Service.

LAT...LON 4010 8138 4011 8123 4002 8123 3998 8136
TIME...MOT...LOC 1928Z 081DEG 4KT 4006 8126

Kramar

Local storm report, Aug 13, 3:32 PM EDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
332 PM EDT MON AUG 13 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0252 PM     FLASH FLOOD      2 SE BRYANT             40.55N  79.92W
08/13/2018                   ALLEGHENY          PA   TRAINED SPOTTER

&&

EVENT NUMBER PBZ1803372

JD

Local storm report, Aug 13, 3:33 PM EDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
333 PM EDT MON AUG 13 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0332 PM     HAIL             2 S EMPIRE              40.48N  80.62W
08/13/2018  M0.88 INCH       JEFFERSON          OH   TRAINED SPOTTER

&&

EVENT NUMBER PBZ1803373

98

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 13, 12:04 PM EDT	Special Weather Statement	PBZ	Armstrong	26 min
Aug 13, 12:20 PM EDT	Flash Flood Warning	PBZ	Armstrong	87 min
Aug 13, 12:51 PM EDT	Special Weather Statement	PBZ	Allegheny	24 min
Aug 13, 1:08 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Westmoreland	22 min
Aug 13, 1:13 PM EDT	Flash Flood Warning	PBZ	Allegheny	2 hr
Aug 13, 1:23 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	37 min
Aug 13, 1:30 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny	30 min
Aug 13, 1:40 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny	13 min
Aug 13, 1:48 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Westmoreland	27 min
Aug 13, 2:05 PM EDT	Areal Flood Advisory	PBZ	Armstrong, Indiana, Jefferson	115 min
Aug 13, 2:11 PM EDT	Special Weather Statement	PBZ	Fayette	34 min
Aug 13, 2:13 PM EDT	Special Weather Statement	PBZ	Washington	32 min
Aug 13, 2:19 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington	26 min
Aug 13, 2:43 PM EDT	Special Weather Statement	PBZ	Washington	32 min
Aug 13, 2:49 PM EDT	Special Weather Statement	PBZ	Fayette	26 min
Aug 13, 3:12 PM EDT	Special Weather Statement	PBZ	Greene	33 min
Aug 13, 3:15 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer, Venango	30 min
Aug 13, 3:33 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Washington	27 min
Aug 13, 1:46 PM EDT	Special Weather Statement	PBZ	Tuscarawas	29 min
Aug 13, 3:28 PM EDT	Special Weather Statement	PBZ	Guernsey	32 min
Aug 13, 4:10 PM EDT	Special Weather Statement	PBZ	Harrison	35 min
Aug 13, 4:12 PM EDT	Severe Thunderstorm Warning	PBZ	Harrison	48 min
Aug 13, 4:57 PM EDT	Severe Thunderstorm Warning	PBZ	Guernsey, Harrison, Tuscarawas	48 min
Aug 13, 5:43 PM EDT	Special Weather Statement	PBZ	Guernsey	32 min
Aug 13, 6:00 PM EDT	Special Weather Statement	PBZ	Guernsey	30 min
Aug 13, 6:41 PM EDT	Flash Flood Warning	PBZ	Guernsey, Muskingum	60 min
Aug 13, 3:19 PM EDT	Special Weather Statement	PBZ	Hancock	26 min
Aug 13, 3:45 PM EDT	Severe Thunderstorm Warning	PBZ	Marion, Monongalia, Preston	29 min
Aug 13, 3:59 PM EDT	Flash Flood Warning	PBZ	Marion	3 hr
Aug 13, 4:00 PM EDT	Special Weather Statement	PBZ	Brooke, Hancock	30 min

Nearby

Severe Thunderstorm Warnings in West Virginia, 2018 Severe Thunderstorm Warnings in Pennsylvania, 2018 Severe Thunderstorm Warnings in Ohio, 2018 Every severe thunderstorm warning in 2018

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.