Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 60, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 12, 2007, 1:12 PM EDT for Lehigh County, Pennsylvania. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 12, 2007, 1:12 PM EDT (17:12 UTC)
- Expired
- Jun 12, 2007, 1:38 PM EDT
- In force
- 26 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County Lehigh County, PA
The radar
The Philadelphia radar (KDIX), 129 km from the middle of the area, began a volume at 17:11 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.
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 12, 12:55 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 5.2 hours before the alert went out and 138 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
- 186 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 1120 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 34 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 121712 SVRPHI PAC077-121800- /O.NEW.KPHI.SV.W.0060.070612T1712Z-070612T1800Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 112 PM EDT TUE JUN 12 2007 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN LEHIGH COUNTY IN EASTERN PENNSYLVANIA... * UNTIL 200 PM EDT * AT 111 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND DAMAGING WINDS NEAR 60 MPH. THIS STORM WAS LOCATED NEAR SCHNECKSVILLE...OR ABOUT 13 MILES NORTHWEST OF ALLENTOWN...AND MOVING SOUTH AT 15 TO 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... 9 MILES WEST OF ANCIENT OAKS BY 140 PM EDT... LAT...LON 4069 7551 4077 7568 4065 7585 4048 7555 $$ JRP
1 follow-up statement
000 WWUS51 KPHI 121738 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 136 PM EDT TUE JUN 12 2007 PAC077-121746- /O.CAN.KPHI.SV.W.0060.000000T0000Z-070612T1800Z/ LEHIGH PA- 136 PM EDT TUE JUN 12 2007 ...THE SEVERE THUNDERSTORM WARNING FOR WESTERN LEHIGH COUNTY IS CANCELLED... THE THUNDERSTORMS WHICH FORMED RAPIDLY AROUND 1:10 PM WEAKENED JUST AS RAPIDLY. THERE ARE STILL SOME LIGHT SHOWERS AND PERHAPS SOME RESIDUAL THUNDER AND LIGHTNING OVER WESTERN LEHIGH COUNTY WHICH IS LIKELY TO CONTINUE THROUGH 2:00 PM. LAT...LON 4069 7551 4077 7568 4065 7585 4048 7555 $$ JRP
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 12:56 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 64 min |
| Jun 12, 1:18 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 42 min |
| Jun 12, 2:00 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Northampton | 30 min |
| Jun 12, 2:15 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery, Philadelphia | 30 min |
| Jun 12, 2:25 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 35 min |
| Jun 12, 2:48 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 42 min |
| Jun 12, 3:20 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 40 min |
| Jun 12, 4:00 PM EDT | Flash Flood Warning | PHI | Montgomery | 3 hr |
| Jun 12, 4:08 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 37 min |
| Jun 12, 5:46 PM EDT | Flash Flood Warning | PHI | Bucks | 119 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.