Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 86, NWS State College, PA

July 7, 2021Centre County, Clearfield County, Huntingdon County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jul 7, 2021, 6:12 PM EDT for Centre County, Clearfield County, Huntingdon County, Pennsylvania. It was in force for 48 min. 9 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 7, 2021, 6:12 PM EDT (22:12 UTC)
Expired: Jul 7, 2021, 7:00 PM EDT
In force: 48 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Centre County, PA, Clearfield County, PA, Huntingdon County, PA

The radar

The State College radar (KCCX), 14 km from the middle of the area, began a volume at 22:12 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.

What was reported inside it

Time	Report	Where	Remark
Jul 7, 6:14 PM EDT	TSTM WND DMG	2 Se Port Matilda, PA	10 TO 12 INCH DIAMETER, 30 TO 40 FT TALL TREE CAME DOWN NEAR THE INTERSECTION OF SMITH RD AND TOW HILL RD.
Jul 7, 6:30 PM EDT	TSTM WND DMG	Port Matilda, PA	LARGE TREE DOWN ON WIRES ON EAST OAK STREET.
Jul 7, 6:30 PM EDT	TSTM WND DMG	Port Matilda, PA
Jul 7, 6:55 PM EDT	TSTM WND DMG	2 Nnw Pleasant Gap, PA	LARGE TREE ACROSS BLANCHARD STREET BLOCKING TRAFFIC.
Jul 7, 6:55 PM EDT	TSTM WND DMG	2 Nnw Pleasant Gap, PA
Jul 7, 6:55 PM EDT	TSTM WND DMG	Pleasant Gap, PA	NUMEROUS TREES AND WIRES DOWN IN PLEASANT GAP.
Jul 7, 6:55 PM EDT	TSTM WND DMG	Pleasant Gap, PA
Jul 7, 6:58 PM EDT	TSTM WND DMG	2 W Bellefonte, PA	NUMEROUS TREES DOWN ALONG AND ACROSS COLEVILLE ROAD.
Jul 7, 6:58 PM EDT	TSTM WND DMG	2 W Bellefonte, PA

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 7, 3:31 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 10.2 hours before the alert went out and 193 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: 505 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1230 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

691 
WUUS51 KCTP 072212
SVRCTP
PAC027-033-061-072300-
/O.NEW.KCTP.SV.W.0086.210707T2212Z-210707T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
612 PM EDT Wed Jul 7 2021

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Eastern Clearfield County in central Pennsylvania...
  North central Huntingdon County in central Pennsylvania...
  Centre County in central Pennsylvania...

* Until 700 PM EDT.

* At 611 PM EDT, severe thunderstorms were located along a line
  extending from Houtzdale to Sandy Ridge to near Stormstown to near
  Franklinville, moving north at 40 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Severe thunderstorms will be near...
  North Philipsburg, Philipsburg, South Philipsburg and Chester Hill 
  around 620 PM EDT.
  State College, Park Forest Village, Black Moshannon State Park, 
  Woodland, Lemont and Boalsburg around 630 PM EDT.
  Bellefonte, Clarence, Snow Shoe, Karthaus, Moshannon, Julian, Pine 
  Glen, Lecontes Mills and Houserville around 640 PM EDT.
  Milesburg around 650 PM EDT.

Other locations impacted by these severe thunderstorms include West
Decatur, Ramey, Orviston, Brisbin, Kylertown, Grassflat, Howard,
Wallaceton, Unionville and Morrisdale.

For those driving on Interstate 80, this includes areas between the
Clearfield and Lamar exits, specifically from mile markers 121 to
162.

This includes Interstate 99 from mile markers 55 to 85.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4125 7790 4118 7790 4118 7779 4115 7779
      4111 7775 4111 7770 4105 7762 4049 7798
      4070 7807 4072 7814 4074 7813 4078 7843
      4124 7835 4122 7810 4114 7801 4118 7797
      4121 7797 4121 7794
TIME...MOT...LOC 2211Z 193DEG 36KT 4083 7833 4081 7820 4077 7806 4062
7799

HAIL...1.00IN
WIND...70MPH
 
$$

Jurewicz

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 3:35 PM EDT	Special Weather Statement	CTP	Fulton	40 min
Jul 7, 4:00 PM EDT	Special Weather Statement	CTP	Warren	45 min
Jul 7, 4:05 PM EDT	Special Weather Statement	CTP	Somerset	25 min
Jul 7, 4:12 PM EDT	Special Weather Statement	CTP	Somerset	33 min
Jul 7, 4:12 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Somerset	47 min
Jul 7, 4:22 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	38 min
Jul 7, 4:44 PM EDT	Severe Thunderstorm Warning	CTP	Cambria	61 min
Jul 7, 4:46 PM EDT	Special Weather Statement	CTP	Warren	29 min
Jul 7, 4:48 PM EDT	Special Weather Statement	CTP	Bedford	27 min
Jul 7, 4:54 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	51 min
Jul 7, 4:59 PM EDT	Special Weather Statement	CTP	Warren	31 min
Jul 7, 5:07 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	53 min
Jul 7, 5:12 PM EDT	Special Weather Statement	CTP	Blair	33 min
Jul 7, 5:19 PM EDT	Severe Thunderstorm Warning	CTP	Blair	41 min
Jul 7, 5:23 PM EDT	Severe Thunderstorm Warning	CTP	Bedford	37 min
Jul 7, 5:27 PM EDT	Special Weather Statement	CTP	Clearfield	33 min
Jul 7, 5:35 PM EDT	Severe Thunderstorm Warning	CTP	Blair	25 min
Jul 7, 5:38 PM EDT	Special Weather Statement	CTP	Warren	37 min
Jul 7, 5:42 PM EDT	Special Weather Statement	CTP	Cumberland	33 min
Jul 7, 5:48 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Huntingdon	57 min
Jul 7, 5:50 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin	40 min
Jul 7, 5:55 PM EDT	Severe Thunderstorm Warning	CTP	McKean	65 min
Jul 7, 6:00 PM EDT	Special Weather Statement	CTP	Elk	30 min
Jul 7, 6:22 PM EDT	Special Weather Statement	CTP	Mifflin	23 min
Jul 7, 6:29 PM EDT	Severe Thunderstorm Warning	CTP	Warren	61 min
Jul 7, 6:36 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield, Clinton, Mifflin	39 min
Jul 7, 6:37 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Perry	37 min
Jul 7, 6:43 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter	77 min
Jul 7, 6:56 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Mifflin, Snyder, Union	49 min
Jul 7, 7:09 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Mifflin, Snyder	36 min
Jul 7, 7:19 PM EDT	Areal Flood Advisory	CTP	Warren	116 min
Jul 7, 7:31 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Montour, Northumberland, Union	44 min
Jul 7, 7:44 PM EDT	Areal Flood Advisory	CTP	McKean, Potter	2 hr
Jul 7, 7:48 PM EDT	Special Weather Statement	CTP	Bedford	27 min
Jul 7, 7:50 PM EDT	Special Weather Statement	CTP	Tioga	10 min
Jul 7, 7:51 PM EDT	Special Weather Statement	CTP	Potter	24 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.