Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 113, NWS State College, PA

August 4, 2017Warren County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Aug 4, 2017, 2:36 PM EDT for Warren County, Pennsylvania. It was in force for 54 min. 1 report 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: Aug 4, 2017, 2:36 PM EDT (18:36 UTC)
Expired: Aug 4, 2017, 3:30 PM EDT
In force: 54 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Warren County, PA

The radar

The Buffalo radar (KBUF), 127 km from the middle of the area, began a volume at 18:36 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
Aug 4, 2:45 PM EDT	TSTM WND DMG	1 W Youngsville, PA	TREES AND WIRES DOWN ALONG MEAD RUN ROAD

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
Aug 4, 1:25 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.6 hours before the alert went out and 126 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: 243 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 895 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 179 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted.

084 
WUUS51 KCTP 041836
SVRCTP
PAC123-041930-
/O.NEW.KCTP.SV.W.0113.170804T1836Z-170804T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
236 PM EDT FRI AUG 4 2017

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Central Warren County in north central Pennsylvania...

* Until 330 PM EDT

* At 236 PM EDT, a severe thunderstorm was located over Garland,
  moving northeast at 30 mph.

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

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is possible. Expect wind damage 
           to trees and power lines. 

* Locations impacted include...
  Lottsville, Garland, Russell, Youngsville, Starbrick and Sugar
  Grove.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4199 7910 4169 7931 4176 7954 4200 7943
TIME...MOT...LOC 1836Z 203DEG 26KT 4180 7940 

HAIL...1.00IN
WIND...60MPH
 
$$

La Corte

2 follow-up statements

577 
WWUS51 KCTP 041906
SVSCTP

Severe Weather Statement
National Weather Service State College PA
306 PM EDT FRI AUG 4 2017

PAC123-041930-
/O.CON.KCTP.SV.W.0113.000000T0000Z-170804T1930Z/
Warren PA-
306 PM EDT FRI AUG 4 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR NORTH CENTRAL WARREN COUNTY...

At 306 PM EDT, a severe thunderstorm was located near Russell, moving
northeast at 30 mph.

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

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is possible. Expect wind damage to 
         trees and power lines. 

Locations impacted include...
Russell and Sugar Grove. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4187 7918 4197 7934 4200 7932 4199 7910
TIME...MOT...LOC 1906Z 218DEG 27KT 4197 7919 

HAIL...1.00IN
WIND...60MPH
 
$$

La Corte

280 
WWUS51 KCTP 041921
SVSCTP

Severe Weather Statement
National Weather Service State College PA
321 PM EDT FRI AUG 4 2017

PAC123-041931-
/O.EXP.KCTP.SV.W.0113.000000T0000Z-170804T1930Z/
Warren PA-
321 PM EDT FRI AUG 4 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL WARREN COUNTY
WILL EXPIRE AT 330 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A severe thunderstorm watch remains in effect until 900 PM EDT for
north central Pennsylvania.

LAT...LON 4187 7918 4197 7934 4200 7932 4199 7910
TIME...MOT...LOC 1921Z 203DEG 26KT 4206 7914 

$$

La Corte

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 9:36 PM EDT	Special Weather Statement	CTP	Franklin	39 min
Aug 4, 8:51 AM EDT	Special Weather Statement	CTP	McKean	69 min
Aug 4, 1:03 PM EDT	Special Weather Statement	CTP	Adams, Cumberland, Perry	42 min
Aug 4, 1:19 PM EDT	Special Weather Statement	CTP	Bedford	26 min
Aug 4, 1:46 PM EDT	Special Weather Statement	CTP	Warren	44 min
Aug 4, 1:47 PM EDT	Special Weather Statement	CTP	Schuylkill	43 min
Aug 4, 1:51 PM EDT	Special Weather Statement	CTP	Dauphin	39 min
Aug 4, 2:26 PM EDT	Areal Flood Advisory	CTP	Cumberland, Dauphin, Lebanon	3 hr
Aug 4, 2:32 PM EDT	Special Weather Statement	CTP	Dauphin, Lebanon, Schuylkill	43 min
Aug 4, 2:51 PM EDT	Special Weather Statement	CTP	Union	39 min
Aug 4, 2:52 PM EDT	Special Weather Statement	CTP	Fulton	23 min
Aug 4, 3:14 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Northumberland, Sullivan, Union	61 min
Aug 4, 3:19 PM EDT	Special Weather Statement	CTP	Fulton	26 min
Aug 4, 3:26 PM EDT	Severe Thunderstorm Warning	CTP	Warren	79 min
Aug 4, 3:42 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Schuylkill	82 min
Aug 4, 3:46 PM EDT	Special Weather Statement	CTP	Huntingdon	29 min
Aug 4, 3:58 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Sullivan	47 min
Aug 4, 4:04 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	56 min
Aug 4, 4:14 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria	46 min
Aug 4, 4:18 PM EDT	Special Weather Statement	CTP	Bedford	27 min
Aug 4, 4:24 PM EDT	Special Weather Statement	CTP	Elk, McKean	36 min
Aug 4, 4:28 PM EDT	Special Weather Statement	CTP	Clinton	32 min
Aug 4, 4:30 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Huntingdon, Mifflin	75 min
Aug 4, 4:33 PM EDT	Special Weather Statement	CTP	Juniata	42 min
Aug 4, 4:42 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria	33 min
Aug 4, 4:47 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Centre, Clearfield	43 min
Aug 4, 4:58 PM EDT	Special Weather Statement	CTP	Bedford, Fulton	32 min
Aug 4, 5:15 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria	37 min
Aug 4, 5:24 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton	51 min
Aug 4, 5:28 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Fulton	62 min
Aug 4, 5:36 PM EDT	Tornado Warning	CTP	Fulton	39 min
Aug 4, 5:44 PM EDT	Special Weather Statement	CTP	Clinton	46 min
Aug 4, 5:51 PM EDT	Special Weather Statement	CTP	Potter	39 min
Aug 4, 5:59 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Potter, Tioga	61 min
Aug 4, 6:18 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton, Huntingdon	57 min
Aug 4, 6:29 PM EDT	Areal Flood Advisory	CTP	Franklin, Fulton, Huntingdon	3 hr
Aug 4, 6:44 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Tioga	61 min
Aug 4, 6:50 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming	40 min
Aug 4, 7:08 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Juniata, Perry	67 min
Aug 4, 7:12 PM EDT	Areal Flood Advisory	CTP	Clinton, Lycoming, Tioga	2 hr
Aug 4, 7:17 PM EDT	Severe Thunderstorm Warning	CTP	Franklin	43 min
Aug 4, 7:36 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming	54 min
Aug 4, 7:50 PM EDT	Special Weather Statement	CTP	Sullivan	55 min
Aug 4, 7:55 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk	80 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2017 Every severe thunderstorm warning in 2017

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.