Alert archive / Pennsylvania / Special Weather Statements in 2021

Special Weather Statement, NWS State College, PA

October 16, 2021Lancaster County, Pennsylvania

NWS State College, PA issued this special weather statement at Oct 16, 2021, 2:29 PM EDT for Lancaster County, Pennsylvania. It was in force for 31 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: Oct 16, 2021, 2:29 PM EDT (18:29 UTC)
Expired: Oct 16, 2021, 3:00 PM EDT
In force: 31 min
Issued by: NWS State College, PA
Hail: 0.00 in
Wind: 50

County Lancaster County, PA

The radar

The Dover AFB radar (KDOX), 133 km from the middle of the area, began a volume at 18:31 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, 6.5 hours before the alert went out and 156 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: 1259 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 192 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 Oct 16, 1:39 PM EDT, 50 minutes earlier.

Area forecast discussion, Oct 16, 1:39 PM EDT, 50 minutes before

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Hazardous weather outlook, Oct 16, 6:51 AM EDT, 7 hours 38 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
651 AM EDT Sat Oct 16 2021

PAZ042-051>053-057>059-064>066-171100-
Sullivan-Montour-Northumberland-Columbia-Dauphin-Schuylkill-Lebanon-
Adams-York-Lancaster-
651 AM EDT Sat Oct 16 2021

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

There is a slight risk of thunderstorms containing damaging winds
this afternoon and evening.

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

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ006-012-018-019-025>028-034>037-041-045-046-049-050-056-063-
171100-
Potter-Northern Clinton-Northern Centre-Southern Centre-Blair-
Huntingdon-Mifflin-Juniata-Bedford-Fulton-Franklin-Tioga-
Northern Lycoming-Southern Clinton-Southern Lycoming-Union-Snyder-
Perry-Cumberland-
651 AM EDT Sat Oct 16 2021

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Isolated thunderstorms may produce gusty winds this afternoon and
evening as a cold front crosses the area.

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

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ004-005-010-011-017-024-033-171100-
Warren-McKean-Elk-Cameron-Clearfield-Cambria-Somerset-
651 AM EDT Sat Oct 16 2021

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

The probability for widespread hazardous weather is low.

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

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Oct 16, 10:18 AM EDT, 4 hours 11 minutes before

Special Weather Statement
National Weather Service State College PA
1018 AM EDT Sat Oct 16 2021

PAZ019-161445-
Southern Centre PA-
1018 AM EDT Sat Oct 16 2021

...A STRONG THUNDERSTORM WILL IMPACT SOUTH CENTRAL CENTRE COUNTY
THROUGH 1045 AM EDT...

At 1018 AM EDT, Doppler radar was tracking a strong thunderstorm over
Pine Grove Mills, moving northeast at 55 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...
State College, Bellefonte, Park Forest Village, Boalsburg, Pleasant
Gap, Stormstown, Lemont, Zion, Houserville, Pine Grove Mills, Centre
Hall, Milesburg, Millheim, Ramblewood, Blanchard, Aaronsburg,
Rebersburg, Spring Mills, Madisonburg and Bald Eagle State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

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

&&

LAT...LON 4108 7760 4097 7752 4097 7748 4091 7742
      4073 7778 4074 7783 4069 7794 4070 7796
      4079 7802 4109 7762
TIME...MOT...LOC 1418Z 230DEG 47KT 4076 7791

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

Evanego

Special weather statement, Oct 16, 10:54 AM EDT, 3 hours 35 minutes before

Special Weather Statement
National Weather Service State College PA
1054 AM EDT Sat Oct 16 2021

PAZ012-041-045-046-049-052-161530-
Southern Lycoming PA-Southern Clinton PA-Union PA-
Northern Clinton PA-Northumberland PA-Northern Lycoming PA-
1054 AM EDT Sat Oct 16 2021

...STRONG THUNDERSTORMS WILL IMPACT NORTHWESTERN NORTHUMBERLAND...
LYCOMING...NORTHEASTERN UNION AND SOUTHEASTERN CLINTON COUNTIES
THROUGH 1130 AM EDT...

At 1054 AM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from Waterville to near Avis to Dunnstown to near
Mackeyville. Movement was northeast at 45 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

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

Strong thunderstorms will be near...
  Avis, Little Pine State Park and Waterville around 1100 AM EDT.
  Jersey Shore and Carroll around 1105 AM EDT.
  Collomsville around 1115 AM EDT.
  Cogan Station and Trout Run around 1120 AM EDT.
  Elimsport and Duboistown around 1125 AM EDT.
  Montoursville, Williamsport and Loyalsockville around 1130 AM EDT.

Other locations impacted by these storms include Garden View, Oval,
Picture Rocks, Loganton and South Williamsport.

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 4159 7681 4142 7676 4137 7669 4115 7667
      4117 7673 4112 7674 4101 7719 4104 7714
      4097 7748 4114 7750 4136 7743 4155 7698
      4155 7696 4159 7690 4160 7685
TIME...MOT...LOC 1454Z 244DEG 38KT 4132 7737 4123 7739 4118 7742 4104
7741

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

Jurewicz

Local storm report, Oct 16, 10:58 AM EDT, 3 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1058 AM EDT SAT OCT 16 2021

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

0830 AM     TSTM WND DMG     RIDGWAY                 41.42N 78.73W
10/16/2021                   ELK                PA   FIRE DEPT/RESCUE

            CORRECTS PREVIOUS TSTM WND DMG REPORT FROM
            RIDGWAY. TREE DOWN ON A RESIDENCE ON
            ALLENHURST AVE.

&&

Special weather statement, Oct 16, 11:39 AM EDT, 2 hours 50 minutes before

Special Weather Statement
National Weather Service State College PA
1139 AM EDT Sat Oct 16 2021

PAZ041-042-161615-
Sullivan PA-Northern Lycoming PA-
1139 AM EDT Sat Oct 16 2021

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN LYCOMING AND
SULLIVAN COUNTIES THROUGH 1215 PM EDT...

At 1139 AM EDT, Doppler radar was tracking a strong thunderstorm near
Grover, moving northeast at 50 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...
Overton, Kettle Creek Gorge, Lincoln Falls, Barbours, Shunk, Dushore,
Laporte, Forksville, Eagles Mere and Hillsgrove.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4139 7628 4134 7671 4135 7674 4136 7689
      4156 7696 4158 7691 4160 7685 4154 7623
      4152 7622
TIME...MOT...LOC 1539Z 234DEG 45KT 4159 7681

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

Colbert

Special weather statement, Oct 16, 1:27 PM EDT, 1 hour 2 minutes before

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Special weather statement, Oct 16, 2:29 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 15, 11:06 PM EDT	Special Weather Statement	CTP	Mifflin	54 min
Oct 16, 8:13 AM EDT	Severe Thunderstorm Warning	CTP	Elk	47 min
Oct 16, 8:47 AM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk, McKean, Potter	43 min
Oct 16, 9:28 AM EDT	Special Weather Statement	CTP	Potter	32 min
Oct 16, 10:18 AM EDT	Special Weather Statement	CTP	Centre	27 min
Oct 16, 10:54 AM EDT	Special Weather Statement	CTP	Lycoming	36 min
Oct 16, 11:39 AM EDT	Special Weather Statement	CTP	Sullivan	36 min
Oct 16, 1:27 PM EDT	Special Weather Statement	CTP	Dauphin, Lancaster, Lebanon, Schuylkill	63 min

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.