Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 144, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 28, 2019, 5:42 PM EDT for Berks County, Chester County, Montgomery County, Pennsylvania. It was in force for 48 min. 3 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
- Jun 28, 2019, 5:42 PM EDT (21:42 UTC)
- Expired
- Jun 28, 2019, 6:30 PM EDT
- In force
- 48 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Berks County, PA, Chester County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 120 km from the middle of the area, began a volume at 21:45 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 |
|---|---|---|---|
| Jun 28, 5:42 PM EDT | HAIL 1 | 4 Nnw Amity Gardens, PA | AT INTERSECTION OF COVERED BRIDGE ROAD AND MEMORIAL HIGHWAY IN OLEY TWP. |
| Jun 28, 5:49 PM EDT | TSTM WND DMG | 2 Ene Amity Gardens, PA | DOWNED TREE AT INTERSECTION OF DOUGLASS DRIVE AND PINE FORGE ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 28, 5:52 PM EDT | TSTM WND DMG | 4 Sse Oley, PA | CORRECTS TIME OF PREVIOUS TSTM WND DMG REPORT FROM 4 SSE OLEY. TREE DOWN AT THE INTERSECTION OF BLACKSMITH RD AND HUNTER RD. TIME ESTIMATED FROM RADAR. |
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, 9.7 hours before the alert went out and 208 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
- 92 J/kg
- Mixed-layer CIN
- -173 J/kg
- Mixed-layer LCL
- 1515 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
020
WUUS51 KPHI 282142
SVRPHI
PAC011-029-091-282230-
/O.NEW.KPHI.SV.W.0144.190628T2142Z-190628T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
542 PM EDT Fri Jun 28 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Berks County in eastern Pennsylvania...
Northwestern Montgomery County in southeastern Pennsylvania...
North central Chester County in southeastern Pennsylvania...
* Until 630 PM EDT.
* At 541 PM EDT, a severe thunderstorm was located near Birdsboro,
or 7 miles east of Reading, moving east at 10 mph. This replaces
the previous severe thunderstorm warning in effect for the area.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to
roofs, siding, trees, and power lines is possible.
* Locations impacted include...
Reading, Pottstown, Birdsboro, Bally, Bechtelsville, Gilbertsville,
Cedarville, Stowe, Boyertown, Spring City, Mount Penn, St.
Lawrence, Pottsgrove, Lorane, South Pottstown, Reiffton, Amity
Gardens, Sanatoga, Kenilworth and Halfway House.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to large hail and 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.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4028 7591 4040 7589 4046 7565 4032 7547
4016 7557
TIME...MOT...LOC 2141Z 266DEG 7KT 4032 7579
HAIL...1.00IN
WIND...60MPH
$$
CMS2 follow-up statements
966
WWUS51 KPHI 282158
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
558 PM EDT Fri Jun 28 2019
PAC011-029-091-282230-
/O.CON.KPHI.SV.W.0144.000000T0000Z-190628T2230Z/
Berks PA-Montgomery PA-Chester PA-
558 PM EDT Fri Jun 28 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR SOUTHEASTERN BERKS...NORTHWESTERN MONTGOMERY AND NORTH CENTRAL
CHESTER COUNTIES...
At 557 PM EDT, a severe thunderstorm was located near Birdsboro, or 7
miles east of Reading, and is nearly stationary.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Reading, Pottstown, Birdsboro, Bally, Bechtelsville, Gilbertsville,
Cedarville, Stowe, Boyertown, Spring City, Mount Penn, St. Lawrence,
Pottsgrove, Lorane, South Pottstown, Reiffton, Amity Gardens,
Sanatoga, Kenilworth and Halfway House.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4028 7591 4040 7589 4046 7565 4032 7547
4016 7557
TIME...MOT...LOC 2157Z 266DEG 1KT 4033 7579
HAIL...1.00IN
WIND...60MPH
$$
CMS406
WWUS51 KPHI 282226
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
626 PM EDT Fri Jun 28 2019
PAC011-029-091-282236-
/O.EXP.KPHI.SV.W.0144.000000T0000Z-190628T2230Z/
Berks PA-Montgomery PA-Chester PA-
626 PM EDT Fri Jun 28 2019
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BERKS...
NORTHWESTERN MONTGOMERY AND NORTH CENTRAL CHESTER COUNTIES WILL
EXPIRE AT 630 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However, heavy
rain is still possible with this thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 4028 7591 4040 7589 4046 7565 4032 7547
4016 7557
TIME...MOT...LOC 2226Z 266DEG 7KT 4033 7573
$$
CMSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 2:28 PM EDT | Special Weather Statement | PHI | Carbon | 32 min |
| Jun 28, 2:59 PM EDT | Special Weather Statement | PHI | Carbon | 31 min |
| Jun 28, 3:14 PM EDT | Special Weather Statement | PHI | Carbon | 31 min |
| Jun 28, 3:27 PM EDT | Special Weather Statement | PHI | Carbon | 33 min |
| Jun 28, 3:55 PM EDT | Areal Flood Advisory | PHI | Carbon | 2 hr |
| Jun 28, 4:02 PM EDT | Special Weather Statement | PHI | Carbon | 28 min |
| Jun 28, 4:26 PM EDT | Special Weather Statement | PHI | Lehigh, Northampton | 34 min |
| Jun 28, 4:31 PM EDT | Special Weather Statement | PHI | Chester | 29 min |
| Jun 28, 4:55 PM EDT | Special Weather Statement | PHI | Lehigh | 35 min |
| Jun 28, 5:01 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh, Northampton | 44 min |
| Jun 28, 5:06 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Montgomery | 39 min |
| Jun 28, 5:23 PM EDT | Areal Flood Advisory | PHI | Lehigh, Northampton | 76 min |
| Jun 28, 5:27 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 48 min |
| Jun 28, 5:35 PM EDT | Flash Flood Warning | PHI | Lehigh, Northampton | 2 hr |
| Jun 28, 5:45 PM EDT | Flash Flood Warning | PHI | Berks | 2 hr |
| Jun 28, 6:13 PM EDT | Special Weather Statement | PHI | Bucks | 32 min |
| Jun 28, 6:32 PM EDT | Special Weather Statement | PHI | Berks | 28 min |
| Jun 28, 6:48 PM EDT | Special Weather Statement | PHI | Montgomery | 27 min |
| Jun 28, 6:50 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Montgomery, Philadelphia | 40 min |
| Jun 28, 7:17 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 43 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2019Every severe thunderstorm warning in 2019
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.