Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 171, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 13, 2016, 7:30 PM EDT for Berks County, Lehigh County, Northampton County, Pennsylvania. It was in force for 45 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
- Aug 13, 2016, 7:30 PM EDT (23:30 UTC)
- Expired
- Aug 13, 2016, 8:15 PM EDT
- In force
- 45 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Berks County, PA, Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 136 km from the middle of the area, began a volume at 23:31 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 13, 7:30 PM EDT | TSTM WND DMG | Temple, PA | A FEW TREES BLOWN DOWN AND SMALL ROW BOAT THROWN APPROXIMATELY 30 FEET |
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 12:00Z, 11.5 hours before the alert went out and 228 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
- 1481 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 1158 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
607
WUUS51 KPHI 132330
SVRPHI
PAC011-077-095-140015-
/O.NEW.KPHI.SV.W.0171.160813T2330Z-160814T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
730 PM EDT SAT AUG 13 2016
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WEST CENTRAL NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
EASTERN BERKS COUNTY IN EASTERN PENNSYLVANIA...
* UNTIL 815 PM EDT
* AT 729 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM JORDAN VALLEY TO SINKING SPRING...MOVING EAST AT 20
MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
* LOCATIONS IMPACTED INCLUDE...
ALLENTOWN...READING...BETHLEHEM...EMMAUS...WYOMISSING...
NORTHAMPTON...BIRDSBORO...KUTZTOWN...SLATINGTON...FLEETWOOD...
SINKING SPRING...LAURELDALE...BATH...WERNERSVILLE...WALNUTPORT...
TOPTON...LEESPORT...BALLY...BECHTELSVILLE AND LYONS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
IN ADDITION TO DAMAGING WINDS...FREQUENT CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
&&
LAT...LON 4071 7581 4073 7577 4073 7574 4075 7572
4076 7534 4025 7569 4027 7608 4029 7611
TIME...MOT...LOC 2329Z 278DEG 17KT 4071 7572 4033 7600
HAIL...<.75IN
WIND...60MPH
$$
MWG1 follow-up statement
610
WWUS51 KPHI 140000
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
800 PM EDT SAT AUG 13 2016
PAC011-077-095-140015-
/O.CON.KPHI.SV.W.0171.000000T0000Z-160814T0015Z/
NORTHAMPTON PA-LEHIGH PA-BERKS PA-
800 PM EDT SAT AUG 13 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR WEST CENTRAL NORTHAMPTON...CENTRAL LEHIGH AND EASTERN BERKS
COUNTIES...
AT 800 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR NORTHAMPTON TO NEAR BIRDSBORO...MOVING EAST AT 20
MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
LOCATIONS IMPACTED INCLUDE...
ALLENTOWN...READING...BETHLEHEM...EMMAUS...WYOMISSING...
NORTHAMPTON...BIRDSBORO...KUTZTOWN...SLATINGTON...FLEETWOOD...BATH...
WALNUTPORT...TOPTON...BALLY...BECHTELSVILLE...LYONS...BEERSVILLE...
CLAUSSVILLE...SCHNECKSVILLE AND NEFFS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 4068 7567 4073 7562 4075 7561 4076 7534
4025 7569 4027 7608 4033 7593
TIME...MOT...LOC 0000Z 278DEG 17KT 4069 7553 4031 7582
HAIL...<.75IN
WIND...60MPH
$$
MWGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 2:53 PM EDT | Special Weather Statement | PHI | Berks | 37 min |
| Aug 13, 6:23 PM EDT | Special Weather Statement | PHI | Berks | 37 min |
| Aug 13, 6:57 PM EDT | Special Weather Statement | PHI | Berks, Lehigh | 48 min |
| Aug 13, 7:53 PM EDT | Special Weather Statement | PHI | Monroe | 22 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2016Every severe thunderstorm warning in 2016
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.