Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 7, NWS State College, PA

May 26, 2021Dauphin County, Perry County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at May 26, 2021, 3:09 PM EDT for Dauphin County, Perry County, Pennsylvania. It was in force for 51 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, 3:09 PM EDT (19:09 UTC)
Expired: May 26, 2021, 4:00 PM EDT
In force: 51 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Dauphin County, PA, Perry County, PA

The radar

The State College radar (KCCX), 109 km from the middle of the area, began a volume at 19:09 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, 3:16 PM EDT	TSTM WND DMG	2 Wsw Halifax, PA	TREES/WIRES DOWN NEAR NEW BUFFALO.
May 26, 3:20 PM EDT	TSTM WND DMG	1 N Halifax, PA	TREES DOWN NEAR ROUTE 147 AND SEIDERS ROAD IN HALIFAX TOWNSHIP.

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

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.2 hours before the alert went out and 167 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: 478 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 922 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 50 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

209 
WUUS51 KCTP 261909
SVRCTP
PAC043-099-262000-
/O.NEW.KCTP.SV.W.0007.210526T1909Z-210526T2000Z/

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

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Central Dauphin County in south central Pennsylvania...
  East central Perry County in south central Pennsylvania...

* Until 400 PM EDT.

* At 308 PM EDT, severe thunderstorms were located along a line
  extending from Millersburg to near New Buffalo to near Duncannon to
  near Wertzville, moving east at 45 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Linglestown, Skyline View, Millersburg, Marysville, Newport,
  Duncannon, Elizabethville, New Bloomfield, New Buffalo, Rockville,
  Shermansdale, Penn National Race Course, Dehart Dam, Liverpool,
  Halifax, Dauphin and Enders.

This includes Interstate 81 from mile markers 75 to 81.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4034 7720 4046 7717 4057 7699 4056 7672
      4051 7676 4048 7668 4035 7663 4034 7663
      4034 7682 4033 7693 4031 7697 4029 7717
TIME...MOT...LOC 1908Z 260DEG 37KT 4054 7694 4047 7703 4035 7703 4032
7708

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

Colbert

2 follow-up statements

092 
WWUS51 KCTP 261933
SVSCTP

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

PAC099-261943-
/O.CAN.KCTP.SV.W.0007.000000T0000Z-210526T2000Z/
Perry PA-
333 PM EDT Wed May 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PERRY COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

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

LAT...LON 4036 7694 4036 7701 4039 7703 4046 7695
      4047 7695 4057 7699 4056 7672 4051 7676
      4048 7668 4034 7663 4034 7682 4033 7691
TIME...MOT...LOC 1933Z 260DEG 37KT 4058 7661 4051 7670 4039 7670 4036
7675

$$

PAC043-262000-
/O.CON.KCTP.SV.W.0007.000000T0000Z-210526T2000Z/
Dauphin PA-
333 PM EDT Wed May 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR CENTRAL DAUPHIN COUNTY...

At 333 PM EDT, severe thunderstorms were located along a line
extending from Williamstown to near Lykens to near Penn National Race
Course to near Skyline View, moving east at 45 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Linglestown, Skyline View, Millersburg, Duncannon, Elizabethville,
Rockville, Penn National Race Course, Dehart Dam, Halifax, Dauphin
and Enders.

This includes Interstate 81 from mile markers 75 to 81.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4036 7694 4036 7701 4039 7703 4046 7695
      4047 7695 4057 7699 4056 7672 4051 7676
      4048 7668 4034 7663 4034 7682 4033 7691
TIME...MOT...LOC 1933Z 260DEG 37KT 4058 7661 4051 7670 4039 7670 4036
7675

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

Colbert

153 
WWUS51 KCTP 261952
SVSCTP

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

PAC043-262002-
/O.EXP.KCTP.SV.W.0007.000000T0000Z-210526T2000Z/
Dauphin PA-
352 PM EDT Wed May 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL DAUPHIN COUNTY WILL
EXPIRE AT 400 PM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

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

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
State College PA.

LAT...LON 4036 7694 4036 7701 4039 7703 4046 7695
      4047 7695 4057 7699 4056 7672 4051 7676
      4048 7668 4034 7663 4034 7682 4033 7691
TIME...MOT...LOC 1952Z 260DEG 37KT 4061 7637 4054 7646 4042 7646 4039
7651

$$

Colbert

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, 3:23 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, 6:44 PM EDT	Severe Thunderstorm Warning	CTP	Blair	37 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.