Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 115, NWS State College, PA

June 23, 2015Lancaster County, York County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 23, 2015, 4:54 PM EDT for Lancaster County, York County, Pennsylvania. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 23, 2015, 4:54 PM EDT (20:54 UTC)
Expired: Jun 23, 2015, 5:42 PM EDT
In force: 48 min
Issued by: NWS State College, PA
Area: Storm-based polygon

Counties Lancaster County, PA, York County, PA

The radar

The Sterling radar (KLWX), 141 km from the middle of the area, began a volume at 20:58 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 23, 10:20 AM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.9 hours before the alert went out and 139 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: 387 J/kg
Mixed-layer CIN: -168 J/kg
Mixed-layer LCL: 1544 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 23, 4:53 PM EDT, 1 minute earlier.

Area forecast discussion, Jun 23, 4:53 PM EDT, 1 minute before

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Hazardous weather outlook, Jun 23, 4:47 PM EDT, 7 minutes before

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In the hours before

Special weather statement, Jun 23, 4:06 PM EDT, 48 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
406 PM EDT TUE JUN 23 2015

PAZ034-035-232030-
BEDFORD PA-FULTON PA-
406 PM EDT TUE JUN 23 2015

...A STRONG THUNDERSTORM WILL AFFECT BEDFORD...AND FULTON COUNTIES
UNTIL 430 PM EDT...

AT 406 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR
BARNES GAP...MOVING EAST AT 30 MPH.

50 MPH WIND GUSTS AND NICKEL SIZE HAIL ARE POSSIBLE WITH THIS STORM.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  LOCUST GROVE AROUND 410 PM EDT.
  WARFORDSBURG AROUND 420 PM EDT.
  NEEDMORE AROUND 425 PM EDT.
  BIG COVE TANNERY AROUND 430 PM EDT.

THIS INCLUDES INTERSTATE 70 FROM MILE MARKERS 156 TO 170.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3973 7842 3989 7838 3988 7797 3981 7801
      3972 7810
TIME...MOT...LOC 2006Z 278DEG 25KT 3980 7831

TYBURSKI

Local storm report, Jun 23, 4:16 PM EDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
416 PM EDT TUE JUN 23 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0405 PM     HAIL             SHIREMANSTOWN           40.22N  76.96W
06/23/2015  M1.00 INCH       CUMBERLAND         PA   TRAINED SPOTTER

&&

EVENT NUMBER CTP1500194

MACH

Local storm report, Jun 23, 4:18 PM EDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE STATE COLLEGE PA
418 PM EDT TUE JUN 23 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0830 AM     TSTM WND DMG     LUTHERSBURG             41.05N  78.72W
06/23/2015                   CLEARFIELD         PA   911 CALL CENTER

            TREES AND WIRES DOWN.

0842 AM     TSTM WND DMG     CURWENSVILLE            40.97N  78.52W
06/23/2015                   CLEARFIELD         PA   911 CALL CENTER

            TREES AND WIRES DOWN.

0915 AM     TSTM WND DMG     ZION                    40.92N  77.67W
06/23/2015                   CENTRE             PA   UTILITY COMPANY

            WIRES DOWN AND POWER OUTAGES IN ZION.

1128 AM     TSTM WND DMG     MAHAFFEY                40.88N  78.73W
06/23/2015                   CLEARFIELD         PA   911 CALL CENTER

            TREES AND WIRES DOWN.

1216 PM     TSTM WND DMG     STATE COLLEGE           40.79N  77.86W
06/23/2015                   CENTRE             PA   911 CALL CENTER

            TREES DOWN ON ROCK ROAD

1229 PM     TSTM WND DMG     2 E BOALSBURG           40.77N  77.75W
06/23/2015                   CENTRE             PA   PUBLIC

            TREE DOWN ALONG LINDEN HALL ROAD

0105 PM     TSTM WND DMG     NORTHUMBERLAND          40.90N  76.79W
06/23/2015                   NORTHUMBERLAND     PA   911 CALL CENTER

            TREES AND WIRES DOWN IN THE CITY OF NORTHUMBERLAND.

0405 PM     HAIL             SHIREMANSTOWN           40.22N  76.96W
06/23/2015  M1.00 INCH       CUMBERLAND         PA   TRAINED SPOTTER

&&

EVENT NUMBER CTP1500186 CTP1500187 CTP1500191 CTP1500192 CTP1500189
CTP1500190 CTP1500193 CTP1500194

MACH

Local storm report, Jun 23, 4:33 PM EDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE STATE COLLEGE PA
433 PM EDT TUE JUN 23 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0830 AM     TSTM WND DMG     LUTHERSBURG             41.05N  78.72W
06/23/2015                   CLEARFIELD         PA   911 CALL CENTER

            TREES AND WIRES DOWN.

0842 AM     TSTM WND DMG     CURWENSVILLE            40.97N  78.52W
06/23/2015                   CLEARFIELD         PA   911 CALL CENTER

            TREES AND WIRES DOWN.

0915 AM     TSTM WND DMG     ZION                    40.92N  77.67W
06/23/2015                   CENTRE             PA   UTILITY COMPANY

            WIRES DOWN AND POWER OUTAGES IN ZION.

1128 AM     TSTM WND DMG     MAHAFFEY                40.88N  78.73W
06/23/2015                   CLEARFIELD         PA   911 CALL CENTER

            TREES AND WIRES DOWN.

1216 PM     TSTM WND DMG     STATE COLLEGE           40.79N  77.86W
06/23/2015                   CENTRE             PA   911 CALL CENTER

            TREES DOWN ON ROCK ROAD

1229 PM     TSTM WND DMG     2 E BOALSBURG           40.77N  77.75W
06/23/2015                   CENTRE             PA   PUBLIC

            TREE DOWN ALONG LINDEN HALL ROAD

0105 PM     TSTM WND DMG     NORTHUMBERLAND          40.90N  76.79W
06/23/2015                   NORTHUMBERLAND     PA   911 CALL CENTER

            TREES AND WIRES DOWN IN THE CITY OF NORTHUMBERLAND.

0405 PM     HAIL             SHIREMANSTOWN           40.22N  76.96W
06/23/2015  M1.00 INCH       CUMBERLAND         PA   TRAINED SPOTTER

0415 PM     HAIL             GOLDSBORO               40.15N  76.75W
06/23/2015  M0.88 INCH       YORK               PA   PUBLIC

            HAIL REPORTED AT ETTERS

&&

EVENT NUMBER CTP1500186 CTP1500187 CTP1500191 CTP1500192 CTP1500189
CTP1500190 CTP1500193 CTP1500194 CTP1500195

MACH

Special weather statement, Jun 23, 4:37 PM EDT, 17 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
437 PM EDT TUE JUN 23 2015

PAZ036-232100-
FRANKLIN PA-
437 PM EDT TUE JUN 23 2015

...A STRONG THUNDERSTORM WILL AFFECT FRANKLIN COUNTY UNTIL 500 PM
EDT...

AT 436 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR
CLAYLICK...MOVING EAST AT 35 MPH.

50 MPH WIND GUSTS AND NICKEL SIZE HAIL ARE POSSIBLE WITH THIS STORM.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  CLAYLICK AROUND 450 PM EDT.
  GREENCASTLE AROUND 500 PM EDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE STATE LINE...WHITETAIL
SKI AREA AND WARRENTON.

THIS INCLUDES INTERSTATE 81 FROM MILE MARKERS 0 TO 4.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3972 7810 3979 7804 3979 7755 3972 7757
TIME...MOT...LOC 2036Z 277DEG 29KT 3975 7802

TYBURSKI

Local storm report, Jun 23, 4:42 PM EDT, 12 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 5:07 AM EDT	Special Weather Statement	CTP	Warren	53 min
Jun 23, 5:36 AM EDT	Special Weather Statement	CTP	Elk, McKean	54 min
Jun 23, 5:50 AM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clinton, Elk, McKean, Potter, Warren	55 min
Jun 23, 6:18 AM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk	57 min
Jun 23, 6:36 AM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Potter, Tioga	54 min
Jun 23, 7:14 AM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield, Clinton, Lycoming, Tioga, Union	76 min
Jun 23, 8:00 AM EDT	Special Weather Statement	CTP	Centre, Columbia, Montour, Northumberland, Schuylkill, Snyder and 1 more	60 min
Jun 23, 8:02 AM EDT	Severe Thunderstorm Warning	CTP	Clearfield	58 min
Jun 23, 8:48 AM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield, Huntingdon	57 min
Jun 23, 9:13 AM EDT	Severe Thunderstorm Warning	CTP	Centre, Huntingdon, Mifflin	34 min
Jun 23, 9:37 AM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Columbia, Mifflin, Montour, Northumberland and 2 more	53 min
Jun 23, 10:24 AM EDT	Special Weather Statement	CTP	Columbia, Schuylkill	36 min
Jun 23, 10:25 AM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland	10 min
Jun 23, 11:24 AM EDT	Severe Thunderstorm Warning	CTP	Clearfield	66 min
Jun 23, 11:50 AM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield	55 min
Jun 23, 12:15 PM EDT	Special Weather Statement	CTP	Blair	30 min
Jun 23, 12:23 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Mifflin, Snyder, Union	37 min
Jun 23, 12:50 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Mifflin, Montour, Northumberland, Snyder and 1 more	55 min
Jun 23, 1:25 PM EDT	Special Weather Statement	CTP	Snyder	35 min
Jun 23, 1:37 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Juniata, Northumberland, Perry, Schuylkill, Snyder	38 min
Jun 23, 1:49 PM EDT	Special Weather Statement	CTP	Cambria	26 min
Jun 23, 1:55 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Somerset	54 min
Jun 23, 2:03 PM EDT	Special Weather Statement	CTP	Cambria	27 min
Jun 23, 2:09 PM EDT	Special Weather Statement	CTP	Schuylkill	36 min
Jun 23, 2:45 PM EDT	Special Weather Statement	CTP	Blair	45 min
Jun 23, 2:51 PM EDT	Special Weather Statement	CTP	Cambria	24 min
Jun 23, 3:08 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Fulton, Huntingdon, Perry	67 min
Jun 23, 3:19 PM EDT	Special Weather Statement	CTP	Somerset	26 min
Jun 23, 3:32 PM EDT	Special Weather Statement	CTP	Cumberland	28 min
Jun 23, 3:35 PM EDT	Special Weather Statement	CTP	Dauphin	25 min
Jun 23, 3:37 PM EDT	Special Weather Statement	CTP	Dauphin	23 min
Jun 23, 3:40 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Lancaster, Lebanon, Perry, York	65 min
Jun 23, 3:56 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	64 min
Jun 23, 4:06 PM EDT	Flash Flood Warning	CTP	Cumberland	4 hr
Jun 23, 4:06 PM EDT	Special Weather Statement	CTP	Fulton	24 min
Jun 23, 4:14 PM EDT	Areal Flood Advisory	CTP	Dauphin, Lancaster, Lebanon, York	2 hr
Jun 23, 4:15 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Dauphin, Franklin, York	60 min
Jun 23, 4:49 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Franklin, York	56 min
Jun 23, 5:01 PM EDT	Special Weather Statement	CTP	Fulton	29 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2015 Every severe thunderstorm warning in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.