Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 83, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jun 29, 2012, 10:53 PM EDT for Adams County, Lancaster County, York County, Pennsylvania. It was in force for 52 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
- Jun 29, 2012, 10:53 PM EDT (02:53 UTC)
- Expired
- Jun 29, 2012, 11:45 PM EDT
- In force
- 52 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
Counties Adams County, PA, Lancaster County, PA, York County, PA
The radar
The Dover AFB radar (KDOX), 139 km from the middle of the area, began a volume at 02:53 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 |
|---|---|---|---|
| Jun 29, 10:56 PM EDT | TSTM WND DMG | 1 Se Columbia, PA | TREES REPORTED DOWN IN COLUMBIA. |
| Jun 29, 11:34 PM EDT | TSTM WND DMG | Narvon, PA | LARGE TREE...APPROXIMATELY 30-INCH DIAMETER....BLOWN DOWN. |
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 00:00Z, 2.9 hours before the alert went out and 141 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.
- Mixed-layer CAPE
- 5490 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 1596 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 12.1
The text
As transmitted, in the capitals the NWS used until 2016.
049
WUUS51 KCTP 300253
SVRCTP
PAC001-071-133-300345-
/O.NEW.KCTP.SV.W.0083.120630T0253Z-120630T0345Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1053 PM EDT FRI JUN 29 2012
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN ADAMS COUNTY IN SOUTH CENTRAL PENNSYLVANIA...
SOUTHERN LANCASTER COUNTY IN SOUTH CENTRAL PENNSYLVANIA...
SOUTHERN YORK COUNTY IN SOUTH CENTRAL PENNSYLVANIA...
* UNTIL 1145 PM EDT
* AT 1047 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM NEW
HOLLAND TO WINDSOR TO LITTLESTOWN...MOVING EAST AT 40 MPH. THESE
STORMS ARE CAPABLE OF PRODUCING ONE INCH DIAMETER HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.
* LOCATIONS IN THE WARNING INCLUDE...
PARADISE AND GLEN ROCK...
STRASBURG AND SAFE HARBOR...
SMITHVILLE AND GAP...
STEWARTSTOWN...
QUARRYVILLE AND HOLTWOOD...
DELTA...
THIS WILL IMPACT I-83 BETWEEN MILE MARKERS 1 AND 18.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS CREATE WINDS OF MORE THAN 57 MPH...OR HAIL ONE
INCH OR LARGER.
NEARLY CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS
LINE OF SEVERE THUNDERSTORMS...MAINLY NEAR THE PENNSYLVANIA MARYLAND
BORDER. WHEN THUNDER ROARS...MOVE INDOORS! REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.
SEVERE THUNDERSTORMS PRODUCE DAMAGE. MOVE INSIDE A PERMANENT BUILDING
NOW TO BE SAFE FROM STRONG WIND GUSTS AND LARGE HAIL.
PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1 8 7 7 6 3 3 6 7 7 2.
&&
LAT...LON 3973 7720 4003 7659 4017 7592 3998 7597
3996 7599 3987 7598 3985 7602 3984 7601
3972 7610
TIME...MOT...LOC 0252Z 278DEG 33KT 4007 7603 3993 7655
3971 7699
$$
FORECASTER: LAMBERT/EVANEGO1 follow-up statement
003
WWUS51 KCTP 300329
SVSCTP
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1129 PM EDT FRI JUN 29 2012
PAC001-300338-
/O.CAN.KCTP.SV.W.0083.000000T0000Z-120630T0345Z/
ADAMS PA-
1129 PM EDT FRI JUN 29 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ADAMS COUNTY IS
CANCELLED...
THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS MOVED OUT
OF THE AREA...THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED.
LAT...LON 3973 7652 3993 7635 4010 7626 4017 7592
3998 7597 3996 7599 3987 7598 3985 7602
3984 7601 3972 7610
TIME...MOT...LOC 0328Z 276DEG 30KT 4010 7619 3993 7627
3973 7645
$$
PAC071-133-300345-
/O.CON.KCTP.SV.W.0083.000000T0000Z-120630T0345Z/
LANCASTER PA-YORK PA-
1129 PM EDT FRI JUN 29 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT
FOR SOUTHEASTERN YORK AND SOUTHEASTERN LANCASTER COUNTIES...
AT 1124 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM LEOLA TO SMITHVILLE TO 8 MILES SOUTHWEST OF
SUNNYBURN...MOVING EAST AT 35 MPH.
LOCATIONS IN THE WARNING INCLUDE...
NEW HOLLAND AND STRASBURG...
QUARRYVILLE AND PARADISE...
GAP AND WAKEFIELD...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1 8 7 7 6 3 3 6 7 7 2.
&&
LAT...LON 3973 7652 3993 7635 4010 7626 4017 7592
3998 7597 3996 7599 3987 7598 3985 7602
3984 7601 3972 7610
TIME...MOT...LOC 0328Z 276DEG 30KT 4010 7619 3993 7627
3973 7645
$$
FORECASTER: LAMBERTThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 8:12 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Somerset | 78 min |
| Jun 29, 8:22 PM EDT | Special Weather Statement | CTP | Huntingdon | 38 min |
| Jun 29, 8:42 PM EDT | Special Weather Statement | CTP | Franklin, Fulton | 63 min |
| Jun 29, 8:57 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Bedford, Cumberland, Franklin, Fulton | 78 min |
| Jun 29, 9:44 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin, York | 76 min |
| Jun 29, 10:05 PM EDT | Special Weather Statement | CTP | Lancaster | 55 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2012Every severe thunderstorm warning in 2012
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.