Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 68, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 14, 2008, 6:15 PM EDT for Chester County, Pennsylvania; New Castle County, Delaware; Cecil County, Maryland. It was in force for 75 min. 3 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 14, 2008, 6:15 PM EDT (22:15 UTC)
- Expired
- Jun 14, 2008, 7:30 PM EDT
- In force
- 75 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties New Castle County, DE, Cecil County, MD, Chester County, PA
The radar
The Dover AFB radar (KDOX), 105 km from the middle of the area, began a volume at 22:15 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 14, 6:30 PM EDT | TSTM WND DMG | Perryville, MD | TREES DOWN FROM PERRYVILLE TO RISING SUN. |
| Jun 14, 7:00 PM EDT | TSTM WND DMG | Cochranville, PA | TREES AND WIRES DOWN. |
| Jun 14, 7:00 PM EDT | TSTM WND DMG | Oxford, PA | TREES AND WIRES 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 12:00Z, 10.3 hours before the alert went out and 149 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
- 92 J/kg
- Mixed-layer CIN
- -205 J/kg
- Mixed-layer LCL
- 1369 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 125 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 142216
SVRPHI
DEC003-MDC015-PAC029-142330-
/O.NEW.KPHI.SV.W.0068.080614T2215Z-080614T2330Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
615 PM EDT SAT JUN 14 2008
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CECIL COUNTY IN NORTHEAST MARYLAND...
NORTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
WESTERN CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA...
* UNTIL 730 PM EDT
* AT 611 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED 8 MILES
WEST OF OCTORARO...OR ABOUT 29 MILES WEST OF NEWARK...AND MOVING
EAST AT 30 MPH. THIS STORM HAS PRODUCED HAIL IN HARFORD COUNTY
MARYLAND.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
OCTORARO...CONOWINGO...RICHARDSMERE AND ROCK SPRINGS BY 625 PM...
WEST NOTTINGHAM AND WOODLAWN BY 630 PM...
RISING SUN...FARMINGTON AND GLEN ROY BY 635 PM...
LOMBARD BY 640 PM...
THUNDERSTORMS ARE CAPABLE OF PRODUCING HEAVY RAINFALL WHICH MAY
RESULT IN LOCALIZED AREAS OF FLOODING. DO NOT DRIVE IN AREAS WHERE
WATER IS CROSSING THE ROAD.
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
LAT...LON 3973 7615 3976 7609 3988 7600 3992 7602
3999 7598 4016 7577 3965 7556 3965 7559
3960 7560 3947 7593 3945 7601 3956 7599
3954 7599 3954 7608 3972 7624
TIME...MOT...LOC 2215Z 248DEG 33KT 3963 7625
$$
TFG1 follow-up statement
000
WWUS51 KPHI 142311
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
710 PM EDT SAT JUN 14 2008
MDC015-142320-
/O.CAN.KPHI.SV.W.0068.000000T0000Z-080614T2330Z/
CECIL MD-
710 PM EDT SAT JUN 14 2008
...THE SEVERE THUNDERSTORM WARNING FOR CECIL COUNTY IS CANCELLED...
THE SEVERE THUNDERSTORM HAS MOVED NORTHEAST OF THE COUNTY.
LAT...LON 3994 7600 3999 7598 4016 7577 3965 7556
3965 7559 3960 7560 3957 7567 3961 7572
3965 7575 3969 7575 3973 7580 3975 7592
3977 7600 3988 7600 3992 7602
TIME...MOT...LOC 2310Z 248DEG 33KT 3981 7583
$$
DEC003-PAC029-142330-
/O.CON.KPHI.SV.W.0068.000000T0000Z-080614T2330Z/
CHESTER PA-NEW CASTLE DE-
710 PM EDT SAT JUN 14 2008
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR NORTHERN NEW CASTLE AND WESTERN CHESTER COUNTIES...
AT 706 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS TO 60 MPH. THIS STORM WAS
LOCATED NEAR WEST GROVE...OR 10 MILES NORTHWEST OF NEWARK...MOVING
EAST AT 38 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
AVONDALE...TOUGHKENAMON...LADENBERG AND NORTH STAR BY 715 PM EDT...
KENNETT SQUARE...HOCKESSIN AND 9 MILES SOUTH OF MODENA BY 720 PM
EDT...
ASHLAND AND 9 MILES NORTH OF ELSMERE BY 725 PM EDT...
LAT...LON 3994 7600 3999 7598 4016 7577 3965 7556
3965 7559 3960 7560 3957 7567 3961 7572
3965 7575 3969 7575 3973 7580 3975 7592
3977 7600 3988 7600 3992 7602
TIME...MOT...LOC 2310Z 248DEG 33KT 3981 7583
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 2:23 PM EDT | Flash Flood Warning | PHI | Monroe | 3 hr |
| Jun 14, 3:02 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 58 min |
| Jun 14, 4:26 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe, Northampton | 64 min |
| Jun 14, 4:49 PM EDT | Flash Flood Warning | PHI | Carbon | 5 hr |
| Jun 14, 5:07 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 53 min |
| Jun 14, 5:18 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 57 min |
| Jun 14, 6:28 PM EDT | Flash Flood Warning | PHI | Chester | 60 min |
| Jun 14, 6:48 PM EDT | Flash Flood Warning | PHI | Carbon, Monroe | 3 hr |
| Jun 14, 7:05 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 70 min |
| Jun 14, 7:42 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Montgomery | 63 min |
| Jun 14, 7:56 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Delaware, Philadelphia | 79 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2008Severe Thunderstorm Warnings in Delaware, 2008Severe Thunderstorm Warnings in Maryland, 2008Every severe thunderstorm warning in 2008
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.