Alert archive / Pennsylvania / Special Weather Statements in 2018
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Aug 1, 2018, 9:54 PM EDT for Berks County, Carbon County, Lehigh County, Pennsylvania. It was in force for 66 min. 6 reports 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
- Aug 1, 2018, 9:54 PM EDT (01:54 UTC)
- Expired
- Aug 1, 2018, 11:00 PM EDT
- In force
- 66 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Berks County, PA, Carbon County, PA, Lehigh County, PA
The radar
The Philadelphia radar (KDIX), 136 km from the middle of the area, began a volume at 01:56 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 |
|---|---|---|---|
| Aug 1, 10:25 PM EDT | TSTM WND DMG | Lobachsville, PA | TREE AND WIRES DOWN BLOCKING LOBACHSVILLE ROAD NEAR BERTOLET MILL ROAD |
| Aug 1, 10:25 PM EDT | TSTM WND GST 55 | Mertztown, PA | MEASURED VIA HANDHELD ANEMOMETER. |
| Aug 1, 10:38 PM EDT | TSTM WND DMG | Emmaus, PA | NUMEROUS TREES AND WIRES REPORTED DOWN. |
| Aug 1, 10:41 PM EDT | TSTM WND DMG | Emmaus, PA | MULTIPLE REPORTS OF TREES DOWN INCLUDING SOME DOWN ON CARS AND A HOUSE. TIME ESTIMATED FROM RADAR. |
| Aug 1, 10:42 PM EDT | TSTM WND DMG | Salisbury Twp, PA | NUMEROUS TREES AND WIRES REPORTED DOWN. |
| Aug 1, 10:45 PM EDT | TSTM WND DMG | Upper Saucon Twp, PA | NUMEROUS REPORTS OF TREES AND WIRES DOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 1.9 hours before the alert went out and 225 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
- 883 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 1170 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 4.2
The text
As transmitted.
060
WWUS81 KPHI 020154
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
954 PM EDT WED AUG 1 2018
PAZ054-055-060>062-101-103-020300-
Lehigh-Monroe-Western Montgomery-Western
Chester-Northampton-Berks-Carbon-
954 PM EDT WED AUG 1 2018
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT BERKS...NORTHWESTERN
MONTGOMERY...LEHIGH...CARBON...WESTERN MONROE AND SOUTHWESTERN
NORTHAMPTON COUNTIES...
At 953 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Locust Lake State Park to near Orwigsburg
to near Wernersville. Movement was northeast at 30 mph.
Winds up to 40 mph are possible with these storms.
Locations impacted include...
Allentown, Reading, Lehighton, Mount Pocono, Bethlehem, Pottstown,
Emmaus, Wyomissing, Northampton, Palmerton, Birdsboro, Kutztown, Jim
Thorpe, Hamburg, Slatington, Fleetwood, Sinking Spring, Laureldale,
Nesquehoning and East Greenville.
Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 4055 7615 4058 7605 4057 7602 4065 7598
4074 7576 4091 7599 4118 7534 4052 7536
4042 7548 4036 7538 4029 7538 4016 7592
4036 7620
TIME...MOT...LOC 0153Z 246DEG 27KT 4079 7610 4059 7610 4029 7613
$$
MeolaThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 10:40 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 37 min |
| Aug 1, 11:35 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 20 min |
| Aug 2, 3:31 AM EDT | Flash Flood Watch | PHI | Morris, Sussex, Warren | 55 hr |
| Aug 2, 1:41 PM EDT | Special Weather Statement | PHI | Burlington | 34 min |
| Aug 2, 2:09 PM EDT | Special Weather Statement | PHI | Monmouth | 36 min |
| Aug 2, 3:41 PM EDT | Special Weather Statement | PHI | Morris | 34 min |
| Aug 2, 6:02 PM EDT | Special Marine Warning | PHI | 58 min | |
| Aug 1, 8:59 PM EDT | Special Weather Statement | PHI | Berks | 61 min |
| Aug 2, 1:50 PM EDT | Special Weather Statement | PHI | Lehigh | 25 min |
| Aug 2, 2:19 PM EDT | Special Weather Statement | PHI | Northampton | 41 min |
| Aug 1, 10:58 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 47 min |
| Aug 2, 5:36 PM EDT | Special Weather Statement | PHI | New Castle | 24 min |
| Aug 2, 5:40 PM EDT | Special Weather Statement | PHI | Kent | 35 min |
| Aug 2, 4:37 PM EDT | Special Weather Statement | PHI | Queen Anne's | 23 min |
| Aug 2, 5:03 PM EDT | Special Weather Statement | PHI | Kent | 27 min |
| Aug 2, 5:34 PM EDT | Special Weather Statement | PHI | Queen Anne's | 26 min |
| Aug 2, 6:07 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's | 38 min |
Nearby
Special Weather Statements in Pennsylvania, 2018Every special weather statement in 2018
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.