Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 101, NWS State College, PA

October 20, 2016Centre County, Clinton County, Lycoming County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Oct 20, 2016, 10:10 PM EDT for Centre County, Clinton County, Lycoming County, Pennsylvania. It was in force for 65 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: Oct 20, 2016, 10:10 PM EDT (02:10 UTC)
Expired: Oct 20, 2016, 11:15 PM EDT
In force: 65 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Centre County, PA, Clinton County, PA, Lycoming County, PA

The radar

The State College radar (KCCX), 67 km from the middle of the area, began a volume at 02:11 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
Oct 20, 10:13 PM EDT	TSTM WND DMG	1 Ene Mill Hall, PA	TREES DOWN ON HOME WITH ENTRAPMENT
Oct 20, 10:15 PM EDT	TSTM WND DMG	Lock Haven, PA	WIDESPREAD DAMAGE. TREES AND WIRES DOWN. .

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
Oct 20, 3:46 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.2 hours before the alert went out and 227 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: 560 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 220 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

051 
WUUS51 KCTP 210210
SVRCTP
PAC027-035-081-210315-
/O.NEW.KCTP.SV.W.0101.161021T0210Z-161021T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1010 PM EDT THU OCT 20 2016

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL CENTRE COUNTY IN CENTRAL PENNSYLVANIA...
  CENTRAL LYCOMING COUNTY IN NORTH CENTRAL PENNSYLVANIA...
  SOUTHEASTERN CLINTON COUNTY IN NORTH CENTRAL PENNSYLVANIA...

* UNTIL 1115 PM EDT.

* AT 1009 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER LAMAR
  AND LOCK HAVEN...MOVING NORTHEAST AT 30 MPH.

  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  MACKEYVILLE...MILL HALL...CASTANEA AND FLEMINGTON AROUND 1020 PM
  EDT.  MCELHATTAN AND DUNNSTOWN AROUND 1030 PM EDT.  JERSEY SHORE
  AND AVIS AROUND 1040 PM EDT.  COLLOMSVILLE AROUND 1050 PM EDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
SALLADASBURG...SOUTH WILLIAMSPORT...OVAL...GARDEN VIEW...LOGANTON...
BEECH CREEK...WILLIAMSPORT AIRPORT...LITTLE LEAGUE WORLD SERIES
COMPLEX AND LOCK HAVEN UNIVERSITY.

FOR THOSE DRIVING ON INTERSTATE 80...THIS INCLUDES AREAS BETWEEN THE
BELLEFONTE AND JERSEY SHORE EXITS...SPECIFICALLY FROM MILE MARKERS
170 TO 189.

THIS INCLUDES INTERSTATE 180 FROM MILE MARKERS 16 TO 29.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4094 7759 4123 7756 4157 7689 4121 7680
TIME...MOT...LOC 0209Z 240DEG 28KT 4102 7752 

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

DANGELO

2 follow-up statements

807 
WWUS51 KCTP 210236
SVSCTP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1036 PM EDT THU OCT 20 2016

PAC027-210245-
/O.CAN.KCTP.SV.W.0101.000000T0000Z-161021T0315Z/
CENTRE PA-
1036 PM EDT THU OCT 20 2016

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CENTRE COUNTY IS
CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE...THE WARNING HAS BEEN CANCELLED FOR
CENTRE COUNTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT FOR
NORTH CENTRAL PENNSYLVANIA.

LAT...LON 4104 7730 4131 7741 4157 7689 4121 7680
TIME...MOT...LOC 0235Z 235DEG 39KT 4120 7717 

$$

PAC035-081-210315-
/O.CON.KCTP.SV.W.0101.000000T0000Z-161021T0315Z/
LYCOMING PA-CLINTON PA-
1036 PM EDT THU OCT 20 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR CENTRAL LYCOMING AND SOUTHEASTERN CLINTON COUNTIES...

AT 1035 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
COLLOMSVILLE... MOVING NORTHEAST AT 45 MPH.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

THIS SEVERE STORM WILL BE NEAR...
  WILLIAMSPORT...MONTOURSVILLE...COGAN STATION...DUBOISTOWN AND 
  TROUT RUN AROUND 1050 PM EDT. 
  LOYALSOCKVILLE AROUND 1100 PM EDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
SALLADASBURG...SOUTH WILLIAMSPORT...OVAL...GARDEN VIEW...LOGANTON...
WILLIAMSPORT AIRPORT AND LITTLE LEAGUE WORLD SERIES COMPLEX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4104 7730 4131 7741 4157 7689 4121 7680
TIME...MOT...LOC 0235Z 235DEG 39KT 4120 7717 

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

DANGELO

689 
WWUS51 KCTP 210247
SVSCTP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1047 PM EDT THU OCT 20 2016

PAC035-210255-
/O.CAN.KCTP.SV.W.0101.000000T0000Z-161021T0315Z/
CLINTON PA-
1047 PM EDT THU OCT 20 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CLINTON COUNTY IS
CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE...THE WARNING HAS BEEN CANCELLED FOR
CLINTON COUNTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT FOR
NORTH CENTRAL PENNSYLVANIA.

LAT...LON 4108 7717 4113 7722 4145 7711 4157 7689
      4121 7680
TIME...MOT...LOC 0245Z 240DEG 28KT 4124 7707 

$$

PAC081-210315-
/O.CON.KCTP.SV.W.0101.000000T0000Z-161021T0315Z/
LYCOMING PA-
1047 PM EDT THU OCT 20 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR CENTRAL LYCOMING COUNTY...

AT 1045 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED
FROM RALSTON TO WILLIAMSPORT...MOVING NORTHEAST AT 35 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

THIS SEVERE STORM WILL BE NEAR...
  MONTOURSVILLE AND LOYALSOCKVILLE AROUND 1100 PM EDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE OVAL...
SOUTH WILLIAMSPORT...GARDEN VIEW...LITTLE LEAGUE WORLD SERIES COMPLEX
AND WILLIAMSPORT AIRPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4108 7717 4113 7722 4145 7711 4157 7689
      4121 7680
TIME...MOT...LOC 0245Z 240DEG 28KT 4124 7707 

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

DANGELO

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 20, 8:03 PM EDT	Special Weather Statement	CTP	Blair	27 min
Oct 20, 8:28 PM EDT	Areal Flood Warning	CTP	Clearfield	3 hr
Oct 20, 8:30 PM EDT	Special Weather Statement	CTP	Clearfield, Clinton	45 min
Oct 20, 8:49 PM EDT	Areal Flood Warning	CTP	Centre, Clinton	6 hr
Oct 20, 9:30 PM EDT	Special Weather Statement	CTP	Centre, Mifflin	60 min
Oct 20, 9:39 PM EDT	Special Weather Statement	CTP	Clinton, Lycoming	66 min
Oct 20, 9:55 PM EDT	Areal Flood Advisory	CTP	Centre, Clinton, Huntingdon	3 hr
Oct 20, 10:42 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Sullivan, Tioga	52 min
Oct 20, 10:47 PM EDT	Areal Flood Warning	CTP	Blair, Centre, Clinton, Huntingdon, Lycoming	6 hr
Oct 21, 12:14 AM EDT	Areal Flood Warning	CTP	Clinton, Lycoming, Sullivan, Tioga	3 hr
Oct 21, 12:19 AM EDT	Special Weather Statement	CTP	Lycoming	26 min
Oct 21, 1:01 AM EDT	Special Weather Statement	CTP	Sullivan	29 min
Oct 21, 1:39 AM EDT	Areal Flood Warning	CTP	Lycoming, Sullivan	3 hr
Oct 21, 2:28 AM EDT	River Flood Warning	CTP	Centre, Clinton	11 hr
Oct 21, 3:30 AM EDT	Flash Flood Warning	CTP	Centre, Clinton, Lycoming, Sullivan, Tioga	4 hr
Oct 21, 5:46 AM EDT	Areal Flood Advisory	CTP	McKean, Warren	3 hr
Oct 21, 7:24 AM EDT	Areal Flood Warning	CTP	Centre, Clinton, Huntingdon, Lycoming, Sullivan, Tioga	8 hr
Oct 21, 8:02 AM EDT	River Flood Warning	CTP	Lycoming, Sullivan	6 hr
Oct 21, 9:05 AM EDT	Special Weather Statement	CTP	Blair	25 min
Oct 21, 9:39 AM EDT	Areal Flood Advisory	CTP	Clearfield	3 hr
Oct 21, 10:25 AM EDT	Special Weather Statement	CTP	Centre, Clinton	65 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2016 Every severe thunderstorm warning in 2016

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.