Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 53, NWS State College, PA

July 1, 2023Clinton County, Lycoming County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jul 1, 2023, 3:18 PM EDT for Clinton County, Lycoming County, Pennsylvania. It was in force for 42 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 1, 2023, 3:18 PM EDT (19:18 UTC)
Expired
Jul 1, 2023, 4:00 PM EDT
In force
42 min
Issued by
NWS State College, PA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Clinton County, PA, Lycoming County, PA

The radar

The State College radar (KCCX), 68 km from the middle of the area, began a volume at 19:20 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

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.3 hours before the alert went out and 214 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, Buffalo Intl Airport, NY at 12:00Z on 2023-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 911 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, Buffalo Intl Airport, NY at 12:00Z on 2023-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 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
911 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
772 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
77 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 State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 1, 12:39 PM EDT, 2 hours 39 minutes earlier.

Area forecast discussion, Jul 1, 12:39 PM EDT, 2 hours 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>
Hazardous weather outlook, Jul 1, 4:38 AM EDT, 10 hours 40 minutes before
Hazardous Weather Outlook
National Weather Service State College PA
438 AM EDT Sat Jul 1 2023

PAZ004>006-010>012-017>019-037-041-042-045-046-049>053-058-020845-
Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Clearfield-
Northern Centre-Southern Centre-Tioga-Northern Lycoming-Sullivan-
Southern Clinton-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-Schuylkill-
438 AM EDT Sat Jul 1 2023

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Strong to severe thunderstorms with gusty winds and small hail
are possible in a few locations late this afternoon or evening.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Heavy showers and thunderstorms are possible in some locations
Sunday, which could result in isolated flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ024>028-033>036-056-057-059-063>066-020845-
Cambria-Blair-Huntingdon-Mifflin-Juniata-Somerset-Bedford-Fulton-
Franklin-Perry-Dauphin-Lebanon-Cumberland-Adams-York-Lancaster-
438 AM EDT Sat Jul 1 2023

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Strong to severe thunderstorms with gusty winds and small hail
are possible in a few locations late this afternoon or evening.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Severe thunderstorms with damaging wind gusts, torrential downpours
and large hail exceeding 1 inch in diameter are possible in a few
locations Sunday afternoon or evening.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Jul 1, 10:06 AM EDT, 5 hours 12 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 1, 12:59 PM EDT, 2 hours 19 minutes before
Special Weather Statement
National Weather Service State College PA
1259 PM EDT Sat Jul 1 2023

PAZ033-034-011730-
Bedford PA-Somerset PA-
1259 PM EDT Sat Jul 1 2023

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN BEDFORD AND EAST
CENTRAL SOMERSET COUNTIES THROUGH 130 PM EDT...

At 1259 PM EDT, Doppler radar was tracking a strong thunderstorm 13
miles south of Windber, moving east at 15 mph.

HAZARD...Pea size hail.

SOURCE...Radar indicated.

IMPACT...Minor hail damage to vegetation possible.

Locations impacted include...
Central City, Indian Lake, Schellsburg, Manns Choice and New Paris.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3999 7883 4006 7888 4023 7864 4002 7852
TIME...MOT...LOC 1659Z 248DEG 12KT 4004 7882

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...<30 MPH

DeVoir
Special weather statement, Jul 1, 3:05 PM EDT, 13 minutes before
Special Weather Statement
National Weather Service State College PA
305 PM EDT Sat Jul 1 2023

PAZ012-041-045-046-011930-
Southern Lycoming PA-Southern Clinton PA-Northern Clinton PA-
Northern Lycoming PA-
305 PM EDT Sat Jul 1 2023

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN LYCOMING AND EAST
CENTRAL CLINTON COUNTIES THROUGH 330 PM EDT...

At 304 PM EDT, Doppler radar was tracking a strong thunderstorm
north of Lock Haven, moving east at 20 mph.

HAZARD...Wind gusts up to 50 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation
         possible.

Locations impacted include...
Lock Haven, Jersey Shore, Avis, Dunnstown, McElhattan, Salladasburg
and Lock Haven University.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4115 7756 4124 7758 4133 7722 4111 7719
TIME...MOT...LOC 1904Z 261DEG 17KT 4120 7748

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

Travis

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 10:06 AM EDTSpecial Weather StatementCTPBedford24 min
Jul 1, 12:59 PM EDTSpecial Weather StatementCTPBedford31 min
Jul 1, 3:05 PM EDTSpecial Weather StatementCTPClinton25 min
Jul 1, 4:55 PM EDTAreal Flood AdvisoryCTPBlair2 hr
Jul 1, 5:24 PM EDTAreal Flood AdvisoryCTPBlair, Huntingdon2 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2023Every severe thunderstorm warning in 2023

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.