Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 103, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 26, 2009, 7:10 PM EDT for Bucks County, Montgomery County, Philadelphia County, Pennsylvania; Burlington County, New Jersey. It was in force for 50 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 26, 2009, 7:10 PM EDT (23:10 UTC)
- Expired
- Jun 26, 2009, 8:00 PM EDT
- In force
- 50 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Bucks County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 46 km from the middle of the area, began a volume at 23:11 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 26, 7:58 PM EDT | HAIL 0.88 | 5 Sse Andalusia, NJ | NICKEL SIZE HAIL IN DELRAN TWP. |
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 26, 2:42 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.2 hours before the alert went out and 124 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
- 1259 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 969 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KPHI 262310 SVRPHI NJC005-PAC017-091-101-270000- /O.NEW.KPHI.SV.W.0103.090626T2310Z-090627T0000Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 710 PM EDT FRI JUN 26 2009 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA... SOUTHEASTERN MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA... NORTHEASTERN PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA... NORTHWESTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY... * UNTIL 800 PM EDT * AT 708 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR WILLOW GROVE...OR 12 MILES NORTH OF PHILADELPHIA...AND MOVING SOUTHEAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... ROCKLEDGE AROUND 715 PM EDT... FEASTERVILLE AND NORTHEAST PHILADELPHIA AROUND 720 PM EDT... BENSALEM AND LANGHORNE AROUND 725 PM EDT... ANDALUSIA AND RIVERSIDE AROUND 730 PM EDT... BEVERLY...BRISTOL AND LEVITTOWN AROUND 735 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT FRIDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND EASTERN PENNSYLVANIA. && LAT...LON 4011 7472 3996 7487 4011 7518 4024 7508 TIME...MOT...LOC 2309Z 301DEG 23KT 4017 7508 $$ SZATKOWSKI
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 3:31 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 59 min |
| Jun 26, 3:53 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 82 min |
| Jun 26, 4:51 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe, Northampton | 69 min |
| Jun 26, 5:35 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 55 min |
| Jun 26, 6:01 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 59 min |
| Jun 26, 6:16 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh | 59 min |
| Jun 26, 6:23 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 52 min |
| Jun 26, 6:30 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 45 min |
| Jun 26, 6:41 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 41 min |
| Jun 26, 6:57 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery, Philadelphia | 48 min |
| Jun 26, 7:15 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 60 min |
| Jun 26, 7:28 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 92 min |
| Jun 26, 7:30 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 45 min |
| Jun 26, 7:45 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 65 min |
| Jun 26, 4:34 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 86 min |
| Jun 26, 5:27 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset | 78 min |
| Jun 26, 6:39 PM EDT | Special Marine Warning | PHI | 51 min | |
| Jun 26, 6:45 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 30 min |
| Jun 26, 7:18 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Monmouth, Ocean | 72 min |
| Jun 26, 7:56 PM EDT | Special Marine Warning | PHI | 64 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2009Severe Thunderstorm Warnings in New Jersey, 2009Every severe thunderstorm warning in 2009
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.