Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 13, NWS State College, PA

May 10, 2018Juniata County, Mifflin County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at May 10, 2018, 4:04 PM EDT for Juniata County, Mifflin County, Pennsylvania. It was in force for 56 min. 4 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 10, 2018, 4:04 PM EDT (20:04 UTC)
Expired: May 10, 2018, 5:00 PM EDT
In force: 56 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Juniata County, PA, Mifflin County, PA

The radar

The State College radar (KCCX), 51 km from the middle of the area, began a volume at 20:07 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 10, 4:15 PM EDT	TSTM WND DMG	1 N Lewistown, PA	TREE ON AN UNOCCUPIED VEHICLE ON SANDY LANE.
May 10, 4:17 PM EDT	TSTM WND DMG	Lewistown, PA	WIRES REPORTED DOWN.
May 10, 4:24 PM EDT	TSTM WND DMG	1 Ne Cuba Mills, PA	TREES AND WIRES DOWN ON CUBA MILLS ROAD.
May 10, 4:27 PM EDT	TSTM WND DMG	1 Nne Mifflintown, PA	TREES AND WIRES DOWN ON BUTCHER SHOP ROAD.

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

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.1 hours before the alert went out and 186 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: 1336 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 206 m²/s²
0-3 km storm-relative helicity: 171 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

811 
WUUS51 KCTP 102004
SVRCTP
PAC067-087-102100-
/O.NEW.KCTP.SV.W.0013.180510T2004Z-180510T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
404 PM EDT THU MAY 10 2018

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Central Mifflin County in central Pennsylvania...
  Northwestern Juniata County in central Pennsylvania...

* Until 500 PM EDT

* At 404 PM EDT, a severe thunderstorm was located near Belleville,
  moving east southeast at 30 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Expect damage to trees and power lines.

* This severe thunderstorm will be near, 
  Lewistown, Highland Park, Juniata Terrace, Burnham and Yeagertown 
  around 410 PM EDT.
  Alfarata around 420 PM EDT.
  Walnut and Spruce Hill around 430 PM EDT.
  Mexico around 440 PM EDT.

Other locations impacted by this severe thunderstorm include
Mifflintown, Port Royal, Maitland, Barrville, Thompsontown, East
Salem and Mifflin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4060 7779 4068 7768 4069 7769 4068 7770
      4070 7770 4073 7767 4061 7718 4056 7717
      4052 7729 4046 7742
TIME...MOT...LOC 2004Z 292DEG 27KT 4063 7766 

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

Lambert

1 follow-up statement

243 
WWUS51 KCTP 102028
SVSCTP

Severe Weather Statement
National Weather Service State College PA
428 PM EDT THU MAY 10 2018

PAC067-087-102100-
/O.CON.KCTP.SV.W.0013.000000T0000Z-180510T2100Z/
Mifflin PA-Juniata PA-
428 PM EDT THU MAY 10 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR CENTRAL MIFFLIN AND NORTHWESTERN JUNIATA COUNTIES...

At 428 PM EDT, a severe thunderstorm was located near Mexico, moving
east southeast at 35 mph.

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

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Lewistown, Walnut, Mexico, Juniata Terrace, Spruce Hill,
Mcalisterville, Mifflintown, Port Royal, Maitland and Thompsontown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4055 7766 4060 7758 4063 7750 4064 7746
      4067 7742 4061 7718 4056 7717 4052 7729
      4046 7742
TIME...MOT...LOC 2028Z 291DEG 32KT 4056 7742 

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
May 10, 12:04 PM EDT	Special Weather Statement	CTP	Warren	56 min
May 10, 1:22 PM EDT	Special Weather Statement	CTP	Elk, McKean	68 min
May 10, 2:13 PM EDT	Special Weather Statement	CTP	Cameron, Potter, Tioga	77 min
May 10, 2:24 PM EDT	Special Weather Statement	CTP	Blair, Cambria, Centre, Clearfield	81 min
May 10, 2:38 PM EDT	Special Weather Statement	CTP	Cameron	52 min
May 10, 2:46 PM EDT	Special Weather Statement	CTP	Bedford, Cumberland, Perry	74 min
May 10, 3:13 PM EDT	Special Weather Statement	CTP	Blair, Cambria, Huntingdon, Mifflin, Somerset	62 min
May 10, 3:21 PM EDT	Special Weather Statement	CTP	Union	39 min
May 10, 3:39 PM EDT	Special Weather Statement	CTP	Mifflin	36 min
May 10, 3:44 PM EDT	Special Weather Statement	CTP	Lycoming, Sullivan	76 min
May 10, 3:52 PM EDT	Special Weather Statement	CTP	Adams, Franklin, Fulton	68 min
May 10, 4:12 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin	63 min
May 10, 4:19 PM EDT	Special Weather Statement	CTP	Bedford, Huntingdon, Somerset	56 min
May 10, 4:37 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Northumberland, Perry, Snyder, Union	53 min
May 10, 4:56 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon	64 min
May 10, 5:00 PM EDT	Special Weather Statement	CTP	Sullivan	60 min
May 10, 5:11 PM EDT	Severe Thunderstorm Warning	CTP	Adams, York	49 min
May 10, 5:45 PM EDT	Severe Thunderstorm Warning	CTP	York	45 min
May 10, 6:01 PM EDT	Special Weather Statement	CTP	Lebanon	59 min
May 10, 6:14 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon	61 min
May 10, 7:31 PM EDT	Special Weather Statement	CTP	Lancaster	44 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2018 Every severe thunderstorm warning in 2018

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.