Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 103, NWS State College, PA

July 8, 2021Lebanon County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jul 8, 2021, 4:48 PM EDT for Lebanon County, Pennsylvania. 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 outline as issued.

The facts

Issued: Jul 8, 2021, 4:48 PM EDT (20:48 UTC)
Expired: Jul 8, 2021, 5:15 PM EDT
In force: 27 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Lebanon County, PA

The radar

The State College radar (KCCX), 156 km from the middle of the area, began a volume at 20:51 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, 8.8 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: 272 J/kg
Mixed-layer CIN: -99 J/kg
Mixed-layer LCL: 1291 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

854 
WUUS51 KCTP 082048
SVRCTP
PAC075-082115-
/O.NEW.KCTP.SV.W.0103.210708T2048Z-210708T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
448 PM EDT Thu Jul 8 2021

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Southeastern Lebanon County in south central Pennsylvania...

* Until 515 PM EDT.

* At 448 PM EDT, a severe thunderstorm was located over
  Schaefferstown, moving northeast at 25 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Lebanon, Cornwall, Myerstown, Sand Hill, Newmanstown, Lebanon
  South, Avon, Richland, Schaefferstown, Kleinfeltersville and Avon
  Heights.

This includes Interstate 78 from mile markers 7 to 8.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4026 7629 4027 7639 4033 7644 4047 7640
      4047 7639 4037 7625 4036 7620 4034 7618
TIME...MOT...LOC 2048Z 212DEG 23KT 4033 7632 

HAIL...0.75IN
WIND...60MPH
 
$$

Lambert

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 8:02 PM EDT	Special Weather Statement	CTP	Tioga	58 min
Jul 7, 8:04 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	56 min
Jul 7, 8:10 PM EDT	Special Weather Statement	CTP	Northumberland	35 min
Jul 7, 8:12 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland, Sullivan, Tioga	48 min
Jul 7, 8:20 PM EDT	Special Weather Statement	CTP	Fulton	25 min
Jul 7, 8:21 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	39 min
Jul 7, 8:25 PM EDT	Special Weather Statement	CTP	Snyder	35 min
Jul 7, 8:40 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Somerset	65 min
Jul 7, 8:47 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Sullivan	28 min
Jul 7, 8:49 PM EDT	Special Weather Statement	CTP	Franklin	26 min
Jul 7, 9:12 PM EDT	Special Weather Statement	CTP	Centre	33 min
Jul 7, 9:16 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria	44 min
Jul 7, 9:24 PM EDT	Areal Flood Advisory	CTP	Columbia, Sullivan	2 hr
Jul 7, 9:36 PM EDT	Special Weather Statement	CTP	Columbia	24 min
Jul 7, 9:43 PM EDT	Special Weather Statement	CTP	Centre	32 min
Jul 7, 10:04 PM EDT	Special Weather Statement	CTP	Centre, Clearfield	26 min
Jul 7, 10:07 PM EDT	Special Weather Statement	CTP	Schuylkill	23 min
Jul 7, 10:14 PM EDT	Special Weather Statement	CTP	Union	46 min
Jul 7, 10:20 PM EDT	Special Weather Statement	CTP	Snyder	25 min
Jul 7, 10:33 PM EDT	Special Weather Statement	CTP	Union	27 min
Jul 7, 11:02 PM EDT	Special Weather Statement	CTP	Montour, Union	28 min
Jul 8, 2:12 PM EDT	Special Weather Statement	CTP	York	48 min
Jul 8, 2:36 PM EDT	Special Weather Statement	CTP	Lancaster	39 min
Jul 8, 3:15 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon	60 min
Jul 8, 3:17 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Dauphin, Franklin, York	73 min
Jul 8, 3:38 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon, York	52 min
Jul 8, 4:25 PM EDT	Areal Flood Advisory	CTP	Adams, Cumberland	112 min
Jul 8, 4:31 PM EDT	Areal Flood Advisory	CTP	Lancaster, York	58 min
Jul 8, 4:36 PM EDT	Special Weather Statement	CTP	Adams, Cumberland, Dauphin, Franklin, Juniata, Lebanon and 3 more	54 min
Jul 8, 4:51 PM EDT	Areal Flood Advisory	CTP	Cumberland, Dauphin, Lebanon, Perry	103 min
Jul 8, 5:31 PM EDT	Special Weather Statement	CTP	Juniata	44 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2021 Every severe thunderstorm warning 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.