Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 15, NWS State College, PA

May 26, 2021Blair County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at May 26, 2021, 6:44 PM EDT for Blair County, Pennsylvania. It was in force for 37 min. 2 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: May 26, 2021, 6:44 PM EDT (22:44 UTC)
Expired: May 26, 2021, 7:21 PM EDT
In force: 37 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Blair County, PA

The radar

The State College radar (KCCX), 59 km from the middle of the area, began a volume at 22:47 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
May 26, 6:50 PM EDT	TSTM WND DMG	1 S Tunnelhill, PA	TREES DOWN ON OLD RT 22 NEAR HEALY RD.
May 26, 6:55 PM EDT	TSTM WND DMG	Hollidaysburg, PA	TREES DOWN IN THE HOLLIDAYSBURG AREA.

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
May 26, 12:59 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 10.7 hours before the alert went out and 150 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: 71 J/kg
Mixed-layer CIN: -98 J/kg
Mixed-layer LCL: 1654 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 146 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

654 
WUUS51 KCTP 262244
SVRCTP
PAC013-262345-
/O.NEW.KCTP.SV.W.0015.210526T2244Z-210526T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
644 PM EDT Wed May 26 2021

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Central Blair County in central Pennsylvania...

* Until 745 PM EDT.

* At 644 PM EDT, a severe thunderstorm was located over Cresson,
  moving east at 55 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Altoona, Hollidaysburg, Roaring Spring, Lakemont, Williamsburg,
  Duncansville, Horseshoe Curve, Canoe Creek State Park, Royer, East
  Freedom, Tunnelhill, Newry, Peoples Natural Gas Field and Lakemont
  Park And Island Waterpark.

This includes Interstate 99 from mile markers 21 to 36.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4034 7861 4037 7856 4051 7854 4053 7852
      4055 7819 4053 7817 4055 7814 4049 7815
      4050 7813 4047 7813 4033 7824
TIME...MOT...LOC 2244Z 268DEG 47KT 4044 7854 

HAIL...<.75IN
WIND...60MPH
 
$$

KF

1 follow-up statement

015 
WWUS51 KCTP 262321
SVSCTP

Severe Weather Statement
National Weather Service State College PA
721 PM EDT Wed May 26 2021

PAC013-262330-
/O.CAN.KCTP.SV.W.0015.000000T0000Z-210526T2345Z/
Blair PA-
721 PM EDT Wed May 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BLAIR COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
central Pennsylvania.

LAT...LON 4034 7861 4037 7856 4051 7854 4053 7852
      4055 7819 4053 7817 4055 7814 4049 7815
      4050 7813 4047 7813 4033 7824
TIME...MOT...LOC 2319Z 268DEG 47KT 4046 7791 

$$

KF

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 12:38 PM EDT	Special Weather Statement	CTP	Cambria	52 min
May 26, 1:23 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield, Elk	41 min
May 26, 2:00 PM EDT	Special Weather Statement	CTP	Juniata	45 min
May 26, 2:07 PM EDT	Special Weather Statement	CTP	Franklin	23 min
May 26, 2:11 PM EDT	Special Weather Statement	CTP	Mifflin	49 min
May 26, 2:16 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Perry, Snyder	44 min
May 26, 2:31 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Sullivan	39 min
May 26, 2:33 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Juniata, Lebanon, Northumberland, Perry, Schuylkill and 1 more	57 min
May 26, 2:42 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Perry	50 min
May 26, 2:46 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Mifflin, Snyder	20 min
May 26, 3:09 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Perry	51 min
May 26, 3:23 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, Schuylkill	82 min
May 26, 3:35 PM EDT	Severe Thunderstorm Warning	CTP	Adams	44 min
May 26, 3:51 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon	54 min
May 26, 4:03 PM EDT	Special Weather Statement	CTP	Lancaster, York	27 min
May 26, 4:37 PM EDT	Special Weather Statement	CTP	Lancaster	23 min
May 26, 4:47 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	43 min
May 26, 5:00 PM EDT	Special Weather Statement	CTP	Adams	30 min
May 26, 5:02 PM EDT	Special Weather Statement	CTP	Lancaster	28 min
May 26, 5:17 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, York	43 min
May 26, 5:29 PM EDT	Special Weather Statement	CTP	Lancaster	16 min
May 26, 5:37 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	23 min
May 26, 6:13 PM EDT	Special Weather Statement	CTP	Cambria	32 min
May 26, 6:30 PM EDT	Severe Thunderstorm Warning	CTP	Cambria	15 min
May 26, 6:35 PM EDT	Special Weather Statement	CTP	Lebanon	25 min
May 26, 7:09 PM EDT	Special Weather Statement	CTP	Huntingdon	36 min
May 26, 7:22 PM EDT	Special Weather Statement	CTP	Lancaster	23 min
May 26, 7:32 PM EDT	Special Weather Statement	CTP	Mifflin	13 min
May 26, 7:42 PM EDT	Special Weather Statement	CTP	Juniata, Mifflin	33 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.