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 Mar 10, 2017, 2:21 PM EST for Lehigh County, Northampton County, Pennsylvania. It was in force for 24 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
- Mar 10, 2017, 2:21 PM EST (19:21 UTC)
- Expired
- Mar 10, 2017, 2:45 PM EST
- In force
- 24 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 117 km from the middle of the area, began a volume at 19:22 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
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.4 hours before the alert went out and 118 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1004 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- 128 m²/s²
- 0-3 km storm-relative helicity
- 704 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
713
WWUS81 KPHI 101921
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
221 PM EST FRI MAR 10 2017
NJZ007-009-PAZ054-055-060>062-103-105-106-101945-
Hunterdon-Warren-Lower Bucks-Upper Bucks-Lehigh-Monroe-Western
Montgomery-Northampton-Berks-Carbon-
221 PM EST FRI MAR 10 2017
...A SNOW SQUALL WILL AFFECT SOUTHWESTERN HUNTERDON...SOUTHWESTERN
WARREN...NORTHEASTERN BERKS...NORTHWESTERN MONTGOMERY...LEHIGH...
SOUTHEASTERN CARBON...NORTHWESTERN BUCKS...SOUTHWESTERN MONROE AND
NORTHAMPTON COUNTIES...
At 220 PM EST, a snow squall was located near Ancient Oaks, or near
Allentown, moving southeast at 25 mph.
Winds in excess of 30 mph are possible with this squall.
Locations impacted include...
Allentown, Easton, Lehighton, Bethlehem, Pottstown, Phoenixville,
Forks, Emmaus, Northampton, Quakertown, Perkasie, Byram, Wilson,
Souderton, Bedminster, Hellertown, Nazareth, Palmerton, Collegeville
and Kutztown.
Visibilities will drop quickly to less than a half mile in this
squall.
Use extra caution if you must travel into or through this dangerous
snow squall. Rapid changes in visibility and potentially slick roads
are likely to lead to accidents. Consider delaying travel until the
squall passes your location.
LAT...LON 4070 7583 4074 7576 4078 7582 4094 7543
4051 7485 4015 7552 4020 7555 4021 7556
4020 7558 4024 7560 4022 7561 4024 7566
4065 7598
TIME...MOT...LOC 1920Z 327DEG 23KT 4059 7557
$$
CMSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 10, 4:17 AM EST | Gale Warning | PHI | 35 hr | |
| Mar 10, 8:23 AM EST | Special Weather Statement | PHI | Morris, Warren | 82 min |
| Mar 10, 10:46 AM EST | Special Weather Statement | PHI | Camden, Gloucester, Mercer, Middlesex, Monmouth, Salem and 1 more | 74 min |
| Mar 10, 11:31 AM EST | Special Weather Statement | PHI | Atlantic, Burlington, Cape May, Cumberland, Monmouth, Ocean | 74 min |
| Mar 10, 2:44 PM EST | Special Weather Statement | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more | 31 min |
| Mar 10, 3:14 PM EST | Special Weather Statement | PHI | Mercer, Middlesex, Monmouth, Somerset | 61 min |
| Mar 10, 3:46 PM EST | Special Weather Statement | PHI | Mercer | 29 min |
| Mar 10, 4:15 PM EST | Special Weather Statement | PHI | Burlington, Camden, Cumberland, Gloucester, Salem | 45 min |
| Mar 10, 4:49 PM EST | Special Weather Statement | PHI | Camden, Gloucester | 41 min |
| Mar 10, 5:10 PM EST | Special Weather Statement | PHI | Mercer | 50 min |
| Mar 10, 5:27 PM EST | Special Weather Statement | PHI | Atlantic, Burlington, Camden, Gloucester | 48 min |
| Mar 10, 5:57 PM EST | Special Weather Statement | PHI | Mercer, Middlesex, Monmouth, Ocean, Somerset | 48 min |
| Mar 10, 6:06 PM EST | Special Weather Statement | PHI | Atlantic | 24 min |
| Mar 10, 6:29 PM EST | Special Weather Statement | PHI | Atlantic | 31 min |
| Mar 10, 7:56 AM EST | Special Weather Statement | PHI | Carbon, Monroe | 79 min |
| Mar 10, 2:06 PM EST | Special Weather Statement | PHI | Berks | 54 min |
| Mar 10, 3:07 PM EST | Special Weather Statement | PHI | Berks | 38 min |
| Mar 10, 3:20 PM EST | Special Weather Statement | PHI | Chester | 25 min |
| Mar 10, 3:42 PM EST | Special Weather Statement | PHI | Lehigh | 33 min |
| Mar 10, 3:57 PM EST | Special Weather Statement | PHI | Berks | 33 min |
| Mar 10, 4:25 PM EST | Special Weather Statement | PHI | Bucks | 50 min |
| Mar 10, 4:28 PM EST | Special Weather Statement | PHI | Delaware, Montgomery | 32 min |
| Mar 10, 6:43 PM EST | Special Weather Statement | PHI | Bucks | 32 min |
| Mar 10, 6:46 PM EST | Special Weather Statement | PHI | Philadelphia | 29 min |
| Mar 10, 5:23 PM EST | Special Weather Statement | PHI | Kent | 52 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.