Alert archive / Pennsylvania / Special Weather Statements in 2021

Special Weather Statement, NWS State College, PA

August 10, 2021Berks County, Pennsylvania

NWS State College, PA issued this special weather statement at Aug 10, 2021, 3:23 PM EDT for Berks County, Pennsylvania. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 10, 2021, 3:23 PM EDT (19:23 UTC)
Expired: Aug 10, 2021, 4:00 PM EDT
In force: 37 min
Issued by: NWS State College, PA
Hail: 0.00 in
Wind: 55

County Berks County, PA

The radar

The State College radar (KCCX), 161 km from the middle of the area, began a volume at 19:23 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.4 hours before the alert went out and 181 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: 529 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 1096 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 10, 3:18 PM EDT, 5 minutes earlier.

Area forecast discussion, Aug 10, 3:18 PM EDT, 5 minutes before

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<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <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.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Hazardous weather outlook, Aug 10, 12:58 PM EDT, 2 hours 25 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
1258 PM EDT Tue Aug 10 2021

PAZ004>006-010>012-017-018-024-033>035-037-041-042-111700-
Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Clearfield-
Northern Centre-Cambria-Somerset-Bedford-Fulton-Tioga-
Northern Lycoming-Sullivan-
1258 PM EDT Tue Aug 10 2021

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This afternoon and tonight.

Strong to severe thunderstorms with gusty winds are possible this
afternoon and early evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Strong to severe thunderstorms with gusty winds are possible both
Wednesday and Thursday afternoon and evening.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ028-036-046-049>053-056>059-063>066-111700-
Juniata-Franklin-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-
Adams-York-Lancaster-
1258 PM EDT Tue Aug 10 2021

...HEAT ADVISORY IN EFFECT FROM NOON TO 7 PM EDT WEDNESDAY...
...HEAT ADVISORY IN EFFECT FROM NOON TO 7 PM EDT THURSDAY...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This afternoon and tonight.

Strong to severe thunderstorms with gusty winds are possible this
afternoon and evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Heat Advisory.

Strong to severe thunderstorms with gusty winds are possible both
Wednesday and Thursday afternoon and evening.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ019-025>027-045-111700-
Southern Centre-Blair-Huntingdon-Mifflin-Southern Clinton-
1258 PM EDT Tue Aug 10 2021

...HEAT ADVISORY IN EFFECT FROM NOON TO 7 PM EDT THURSDAY...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This afternoon and tonight.

Strong to severe thunderstorms with gusty winds are possible this
afternoon and evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Heat Advisory.

Strong to severe thunderstorms with gusty winds are possible both
Wednesday and Thursday afternoon and evening.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

In the hours before

Special weather statement, Aug 10, 2:21 PM EDT, 1 hour 2 minutes before

Special Weather Statement
National Weather Service State College PA
221 PM EDT Tue Aug 10 2021

PAZ057-059-101845-
Lebanon PA-Dauphin PA-
221 PM EDT Tue Aug 10 2021

...A strong thunderstorm will impact portions of central Dauphin and
western Lebanon Counties through 245 PM EDT...

At 221 PM EDT, Doppler radar was tracking a strong thunderstorm near
Dehart Dam, moving east at 30 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Lebanon, Hershey, Palmyra, Linglestown, Annville, Skyline View,
Campbelltown, Pleasant Hill, Sand Hill, Cleona, Elizabethville,
Fredericksburg, Timber Hills, Harper Tavern, Lickdale, Fort
Indiantown Gap, Penn National Race Course, Dehart Dam, Jonestown and
Dauphin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4024 7648 4038 7694 4056 7687 4051 7646
      4047 7639
TIME...MOT...LOC 1821Z 285DEG 25KT 4045 7681

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

Dangelo

Special weather statement, Aug 10, 3:12 PM EDT, 11 minutes before

Special Weather Statement
National Weather Service State College PA
312 PM EDT Tue Aug 10 2021

PAZ017-024-025-033-034-101945-
Bedford PA-Somerset PA-Clearfield PA-Blair PA-Cambria PA-
312 PM EDT Tue Aug 10 2021

...Strong thunderstorms will impact portions of central Bedford,
southwestern Clearfield, Somerset, Blair and Cambria Counties through
345 PM EDT...

At 312 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from 8 miles west of Northern Cambria to Jerome to
near Point Marion. Movement was east at 40 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Altoona, Johnstown, Somerset, Hollidaysburg, Tyrone, Westmont,
Windber, Ebensburg, Bedford, Belmont, Nanty-Glo, Portage, Northern
Cambria, Roaring Spring, Geistown, Southmont, Meyersdale, Berlin, New
Enterprise and Martinsburg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Very heavy rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3973 7940 3978 7939 3978 7935 3986 7942
      4003 7931 4020 7899 4040 7898 4072 7880
      4076 7881 4074 7818 4068 7822 4063 7819
      4036 7821 4030 7826 4022 7822 4012 7823
      3972 7895
TIME...MOT...LOC 1912Z 277DEG 35KT 4069 7894 4021 7898 3974 7981

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

CR

Special weather statement, Aug 10, 3:23 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service State College PA
323 PM EDT Tue Aug 10 2021

PAZ059-066-102000-
Lancaster PA-Lebanon PA-
323 PM EDT Tue Aug 10 2021

...A strong thunderstorm will impact portions of northeastern
Lancaster and southeastern Lebanon Counties through 400 PM EDT...

At 323 PM EDT, Doppler radar was tracking a strong thunderstorm over
Myerstown, moving east at 30 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Lebanon, Cornwall, Myerstown, Denver, Reamstown, Sand Hill,
Newmanstown, Lebanon South, Adamstown, Avon, Richland,
Schaefferstown, Quentin, Kleinfeltersville, Bowmansville, Reinholds,
Schoeneck and Avon Heights.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4028 7645 4043 7640 4043 7633 4037 7625
      4036 7620 4031 7614 4016 7591
TIME...MOT...LOC 1923Z 280DEG 24KT 4036 7634

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

Dangelo

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 12:55 PM EDT	Heat Advisory	CTP	Adams, Columbia, Cumberland, Dauphin, Franklin, Juniata and 10 more	30 hr
Aug 10, 12:55 PM EDT	Heat Advisory	CTP	Adams, Bedford, Blair, Centre, Clinton, Columbia and 19 more	54 hr
Aug 10, 2:21 PM EDT	Special Weather Statement	CTP	Dauphin, Lebanon	24 min
Aug 10, 2:32 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon	43 min
Aug 10, 3:12 PM EDT	Special Weather Statement	CTP	Bedford, Blair, Cambria, Somerset	33 min
Aug 10, 3:25 PM EDT	Special Weather Statement	CTP	Huntingdon, Juniata	50 min
Aug 10, 3:28 PM EDT	Special Weather Statement	CTP	Schuylkill	47 min
Aug 10, 4:14 PM EDT	Special Weather Statement	CTP	Juniata	31 min
Aug 10, 4:31 PM EDT	Special Weather Statement	CTP	Centre	29 min
Aug 10, 4:48 PM EDT	Special Weather Statement	CTP	Perry	27 min
Aug 10, 5:18 PM EDT	Special Weather Statement	CTP	Dauphin	42 min
Aug 10, 5:50 PM EDT	Special Weather Statement	CTP	Adams	40 min
Aug 10, 5:52 PM EDT	Special Weather Statement	CTP	Lebanon	38 min
Aug 10, 6:12 PM EDT	Special Weather Statement	CTP	Lancaster	63 min
Aug 10, 6:17 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon	73 min
Aug 10, 6:29 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	58 min
Aug 10, 7:00 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	75 min
Aug 10, 7:33 PM EDT	Areal Flood Advisory	CTP	Lancaster	2 hr

Nearby

Special Weather Statements in Pennsylvania, 2021 Every special weather statement in 2021

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.