Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 70, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 19, 2013, 8:33 PM EDT for Berks County, Pennsylvania. It was in force for 42 min. 4 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
- Jul 19, 2013, 8:33 PM EDT (00:33 UTC)
- Expired
- Jul 19, 2013, 9:15 PM EDT
- In force
- 42 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 136 km from the middle of the area, began a volume at 00:34 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 |
|---|---|---|---|
| Jul 19, 8:40 PM EDT | TSTM WND DMG | Spring Twp, PA | SOME TREES DOWN IN SPRING TOWNSHIP. |
| Jul 19, 8:45 PM EDT | TSTM WND DMG | 2 Wsw Flying Hills, PA | SOME TREES DOWN IN CUMRU TOWNSHIP. |
| Jul 19, 8:50 PM EDT | TSTM WND DMG | Saint Lawrence, PA | TREE ONTO WIRES IN SAINT LAWRENCE. |
| Jul 19, 9:10 PM EDT | HAIL 0.5 | Fleetwood, PA | HALF INCH HAIL REPORTED IN FLEETWOOD. REPORT RELAYED BY EPAWA. |
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, 0.6 hours before the alert went out and 204 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
- 3898 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 1191 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
473 WUUS51 KPHI 200033 SVRPHI PAC011-200115- /O.NEW.KPHI.SV.W.0070.130720T0033Z-130720T0115Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 833 PM EDT FRI JUL 19 2013 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... BERKS COUNTY IN EASTERN PENNSYLVANIA... * UNTIL 915 PM EDT * AT 830 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM. THE STORM WAS NEAR DENVER...MOVING NORTHEAST AT 25 MPH. THIS STORM IS CAPABLE OF PRODUCING QUARTER SIZE HAIL... AND DAMAGING WINDS IN EXCESS OF 60 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... WERNERSVILLE AROUND 840 PM EDT... SINKING SPRING AROUND 845 PM EDT... WYOMISSING AND FAIRVIEW HGTS AROUND 850 PM EDT... READING AND LEESPORT AROUND 855 PM EDT... LAURELDALE AND LEESPORT AROUND 900 PM EDT... BIRDSBORO AROUND 905 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS SEVERE THUNDERSTORM. WHEN THUNDER ROARS...MOVE INDOORS! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && LAT...LON 4054 7585 4029 7566 4021 7599 4033 7618 TIME...MOT...LOC 0033Z 244DEG 22KT 4028 7609 $$ ROBERTSON
1 follow-up statement
243 WWUS51 KPHI 200052 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 852 PM EDT FRI JUL 19 2013 PAC011-200115- /O.CON.KPHI.SV.W.0070.000000T0000Z-130720T0115Z/ BERKS PA- 852 PM EDT FRI JUL 19 2013 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR EASTERN BERKS COUNTY... AT 849 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM LAURELDALE TO FLYING HILLS... MOVING EAST AT 30 MPH. SEVERE THUNDERSTORMS WILL BE NEAR... BIRDSBORO AROUND 900 PM EDT... AMITY GARDENS AROUND 905 PM EDT... FLEETWOOD AROUND 910 PM EDT... LAT...LON 4024 7593 4036 7608 4054 7585 4029 7566 TIME...MOT...LOC 0052Z 248DEG 26KT 4040 7595 4028 7588 $$ ROBERTSON
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 8:24 PM EDT | Special Weather Statement | PHI | Berks | 36 min |
| Jul 19, 9:01 PM EDT | Special Weather Statement | PHI | Chester | 29 min |
| Jul 19, 9:07 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Northampton | 38 min |
| Jul 19, 9:41 PM EDT | Special Weather Statement | PHI | Northampton | 34 min |
| Jul 20, 2:39 PM EDT | Special Weather Statement | PHI | Monroe | 51 min |
| Jul 20, 3:31 PM EDT | Special Weather Statement | PHI | Monroe | 59 min |
| Jul 20, 5:13 PM EDT | Special Weather Statement | PHI | Lehigh | 62 min |
| Jul 20, 7:16 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Northampton | 59 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2013Every severe thunderstorm warning in 2013
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.