Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 80, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 19, 2007, 7:42 PM EDT for Chester County, Pennsylvania. It was in force for 63 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
- Jun 19, 2007, 7:42 PM EDT (23:42 UTC)
- Expired
- Jun 19, 2007, 8:45 PM EDT
- In force
- 63 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County Chester County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 19, 8:14 PM EDT | TSTM WND DMG | 5 Ne Honey Brook, PA | TREE REPORTED HANGING OVER ROADWAY AT CONESTOGA PIKE AND NANTMEAL ROAD IN EAST NANTMEAL TOWNSHIP. |
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 |
|---|---|---|---|
| Jun 19, 3:02 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.7 hours before the alert went out and 62 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
- 290 J/kg
- Mixed-layer CIN
- -216 J/kg
- Mixed-layer LCL
- 1065 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 102 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 192342 SVRPHI PAC029-200045- /O.NEW.KPHI.SV.W.0080.070619T2342Z-070620T0045Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 742 PM EDT TUE JUN 19 2007 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA... * UNTIL 845 PM EDT * AT 742 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 7 MILES SOUTHWEST OF PARKESBURG...OR ABOUT 16 MILES SOUTHEAST OF LANCASTER...AND MOVING NORTHEAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... PARKESBURG BY 755 PM EDT... COATESVILLE BY 805 PM EDT... 6 MILES SOUTHEAST OF HONEY BROOK BY 810 PM EDT... DOWNINGTOWN AND 7 MILES SOUTHEAST OF ELVERSON BY 820 PM EDT... LIONVILLE BY 825 PM EDT... 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. LAT...LON 3997 7617 3972 7599 4010 7549 4026 7569 $$ RPW
1 follow-up statement
000 WWUS51 KPHI 200031 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 830 PM EDT TUE JUN 19 2007 PAC029-200045- /O.CON.KPHI.SV.W.0080.000000T0000Z-070620T0045Z/ CHESTER PA- 830 PM EDT TUE JUN 19 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR NORTHERN CHESTER COUNTY... AT 830 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE STRONG THUNDERSTORMS CAPABLE OF PRODUCING SMALL HAIL... AND DAMAGING WINDS. THIS STORM WAS LOCATED NEAR THORNDALE...OR ABOUT 23 MILES SOUTH OF READING...MOVING NORTHEAST AT 30 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... DOWNINGTOWN BY 835 PM EDT... 9 MILES SOUTHEAST OF ELVERSON BY 840 PM EDT... LIONVILLE AND EXTON BY 845 PM EDT... LAT...LON 4008 7598 3986 7588 4002 7558 4025 7567 $$ RPW
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 7:28 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 62 min |
| Jun 19, 7:34 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 41 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2007Every severe thunderstorm warning in 2007
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.