Alert archive / Pennsylvania / Special Weather Statements in 2017
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at May 25, 2017, 6:39 PM EDT for Bucks County, Pennsylvania. It was in force for 36 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
- May 25, 2017, 6:39 PM EDT (22:39 UTC)
- Expired
- May 25, 2017, 7:15 PM EDT
- In force
- 36 min
- Issued by
- NWS Philadelphia/Mount Holly
County Bucks County, PA
The radar
The Philadelphia radar (KDIX), 64 km from the middle of the area, began a volume at 22:41 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 nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 10.7 hours before the alert went out and 201 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
- 2 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 458 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 164 m²/s²
- 0-3 km storm-relative helicity
- 253 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
516
WWUS81 KPHI 252239
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
639 PM EDT THU MAY 25 2017
NJZ009-PAZ104>106-252315-
Hunterdon-Lower Bucks-Upper Bucks-Eastern Montgomery-
639 PM EDT THU MAY 25 2017
...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL HUNTERDON...EAST
CENTRAL MONTGOMERY...CENTRAL BUCKS AND NORTHEASTERN PHILADELPHIA
COUNTIES...
At 639 PM EDT, a strong thunderstorm was located over Willow Grove,
or 10 miles north of Philadelphia, moving north at 25 mph.
Winds up to 40 mph and pea size hail are possible with this storm.
Locations impacted include...
Doylestown, Byram, Hatboro, Bedminster, Jenkintown, Chalfont,
Tinicum, Rockledge, New Hope, Dublin, Abington, Bryn Athyn, Ivyland,
Stockton, Willow Grove, Lumberville, Richboro, Sergeantsville,
Pipersville and Gardenville.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
LAT...LON 4012 7504 4008 7509 4006 7509 4010 7518
4046 7522 4046 7490
TIME...MOT...LOC 2239Z 195DEG 20KT 4015 7510
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 5:12 PM EDT | Special Marine Warning | PHI | 63 min | |
| May 25, 5:15 PM EDT | Special Weather Statement | PHI | Cumberland | 30 min |
| May 25, 5:29 PM EDT | Areal Flood Advisory | PHI | Camden, Cumberland, Gloucester, Salem | 2 hr |
| May 25, 5:51 PM EDT | Special Weather Statement | PHI | Salem | 24 min |
| May 25, 6:16 PM EDT | Special Weather Statement | PHI | Gloucester | 29 min |
| May 25, 7:37 PM EDT | Special Marine Warning | PHI | 38 min | |
| May 25, 7:50 PM EDT | Special Marine Warning | PHI | 55 min | |
| May 25, 7:56 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 49 min |
| May 25, 5:42 PM EDT | Special Weather Statement | PHI | Philadelphia | 33 min |
| May 25, 5:48 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 42 min |
| May 25, 6:26 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 49 min |
| May 25, 7:09 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent, Queen Anne's | 51 min |
| May 25, 6:48 PM EDT | Special Weather Statement | PHI | Sussex | 27 min |
| May 25, 7:13 PM EDT | Special Weather Statement | PHI | Kent | 32 min |
| May 25, 7:49 PM EDT | Special Weather Statement | PHI | New Castle | 26 min |
Nearby
Special Weather Statements in Pennsylvania, 2017Every special weather statement in 2017
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.