Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 61, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 28, 2019, 5:45 PM EDT for Berks County, Chester County, Pennsylvania. It was in force for 45 min. 15 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
- May 28, 2019, 5:45 PM EDT (21:45 UTC)
- Expired
- May 28, 2019, 6:30 PM EDT
- In force
- 45 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.75 in
- Wind
- 60.0 mph
Counties Berks County, PA, Chester County, PA
The radar
The Philadelphia radar (KDIX), 110 km from the middle of the area, began a volume at 21:48 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 |
|---|---|---|---|
| May 28, 5:52 PM EDT | TORNADO | Morgantown, PA | MAXIMUM EF SCALE RATING EF2 WITH ESTIMATED MAXIMUM WINDS OF 120 MPH. |
| May 28, 5:53 PM EDT | HAIL 1.75 | 3 Ene New Morgan, PA | TIME ESTIMATED FROM RADAR. |
| May 28, 5:54 PM EDT | TSTM WND DMG | 3 Ene Churchtown, PA | TURKEY BARN DESTROYED IN CAERNARVON TWP. |
| May 28, 5:55 PM EDT | HAIL 2 | Morgantown, PA | |
| May 28, 5:55 PM EDT | TORNADO | Morgantown, PA | SIGNIFICANT ROOF AND TREE DAMAGE REPORTED IN MORGANTOWN. TIME ESTIMATED FROM RADAR. |
| May 28, 5:56 PM EDT | TSTM WND DMG | Caernarvon Twp, PA | POSSIBLE TORNADO DAMAGE IN CAERNARVON TWP AND MORGANTOWN WITH BUILDINGS AND HOMES DAMAGED AND NUMEROUS TREES DOWN. TIME ESTIMATED FROM RADAR. |
| May 28, 5:59 PM EDT | TSTM WND GST 88 | Morgantown, PA | MEASURED BY PERSONAL WEATHER STATION IN CLOSE PROXIMITY TO THE TORNADO THAT MOVED THROUGH TOWN. THIS WAS THE LAST AVAILABLE OBSERVATION BEFORE A POWER OUTAGE OCCURRED. TIME OF OBSERVATION WAS BETWEEN 5:54 AND 5:59 PM. |
| May 28, 6:25 PM EDT | TSTM WND DMG | 1 Nnw West Chester, PA | TREE DOWN AT OWEN ROAD AND KIRBY DRIVE IN WEST GOSHEN TWP. ALL LANES CLOSED. TIME ESTIMATED FROM RADAR. |
| May 28, 6:28 PM EDT | TSTM WND DMG | 1 Wnw Downington, PA | DOWNED TREE BLOCKING THE SOUTHBOUND LANE OF ROCK RAYMOND DRIVE NEAR THE U.S. 30 BYPASS. TIME ESTIMATED FROM RADAR. |
| May 28, 6:28 PM EDT | HAIL 1 | 1 N West Chester, PA | |
| May 28, 6:30 PM EDT | HAIL 1 | Exton, PA | |
| May 28, 6:33 PM EDT | TSTM WND DMG | 1 Nne South Coatesville, PA | LARGE TREE BLOWN DOWN NEAR THE INTERSECTION OF FOUNDRY ROAD AND FOUNDRY STREET IN CALN TWP. TIME ESTIMATED FROM RADAR. |
| May 28, 6:35 PM EDT | TSTM WND DMG | 1 Se Exton, PA | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 SE EXTON. TREE DOWN ON PA-100. |
| May 28, 6:35 PM EDT | TSTM WND DMG | 1 Se Exton, PA | TREE DOWN ON PA-100. |
| May 28, 6:38 PM EDT | TSTM WND DMG | 1 W East Goshen Twp., PA | TREE DOWN BLOCKING MEADOWBROOK LANE NEAR BOOT ROAD. TIME ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 28, 1:48 PM EDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 9.8 hours before the alert went out and 197 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
- 35 J/kg
- Mixed-layer CIN
- -149 J/kg
- Mixed-layer LCL
- 1167 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 293 m²/s²
- 0-3 km storm-relative helicity
- 414 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
313
WUUS51 KPHI 282145
SVRPHI
PAC011-029-282230-
/O.NEW.KPHI.SV.W.0061.190528T2145Z-190528T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
545 PM EDT Tue May 28 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Berks County in eastern Pennsylvania...
Central Chester County in southeastern Pennsylvania...
* Until 630 PM EDT.
* At 545 PM EDT, a severe thunderstorm was located over Elverson, or
12 miles southeast of Reading, moving southeast at 35 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Trained weather spotters.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Wind
damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
West Chester, Phoenixville, Coatesville, Westtown, Downingtown,
Kennett Square, Honey Brook, Elverson, New Morgan, Pughtown,
Marshallton, Lionville-Marchwood, Valley Forge, Glenmoore, Paoli,
Chester Springs, Lionville, Cedarville, West Goshen and Stowe.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A tornado watch remains in effect until 1000 PM EDT for eastern and
southeastern Pennsylvania.
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
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.
&&
LAT...LON 4014 7588 4017 7593 4028 7574 4025 7569
4024 7570 4024 7568 4011 7547 4009 7545
4009 7544 4006 7539 3981 7570 4011 7594
TIME...MOT...LOC 2145Z 312DEG 30KT 4017 7582
TORNADO...POSSIBLE
HAIL...1.75IN
WIND...60MPH
$$
Gorse1 follow-up statement
490
WWUS51 KPHI 282202
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
602 PM EDT Tue May 28 2019
PAC011-029-282230-
/O.CON.KPHI.SV.W.0061.000000T0000Z-190528T2230Z/
Berks PA-Chester PA-
602 PM EDT Tue May 28 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR SOUTHEASTERN BERKS AND CENTRAL CHESTER COUNTIES...
At 601 PM EDT, a severe thunderstorm was located over Downingtown, or
8 miles northwest of West Chester, moving southeast at 40 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Trained weather spotters. This storm has a history of
producing hail to the size of golf balls.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Wind damage
to roofs, siding, trees, and power lines is possible.
Locations impacted include...
West Chester, Phoenixville, Coatesville, Westtown, Downingtown,
Kennett Square, Honey Brook, Elverson, New Morgan, Pughtown,
Marshallton, Lionville-Marchwood, Valley Forge, Glenmoore, Paoli,
Chester Springs, Lionville, Cedarville, West Goshen and Stowe.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A tornado watch remains in effect until 1000 PM EDT for eastern and
southeastern Pennsylvania.
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 4014 7588 4017 7593 4028 7574 4025 7569
4024 7570 4024 7568 4011 7547 4009 7545
4009 7544 4006 7539 3981 7570 4011 7594
TIME...MOT...LOC 2201Z 315DEG 35KT 4005 7570
TORNADO...POSSIBLE
HAIL...1.75IN
WIND...60MPH
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 4:27 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 63 min |
| May 28, 4:56 PM EDT | Special Weather Statement | PHI | Chester | 49 min |
| May 28, 5:08 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 67 min |
| May 28, 5:22 PM EDT | Tornado Warning | PHI | Berks | 23 min |
| May 28, 5:36 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 39 min |
| May 28, 6:03 PM EDT | Areal Flood Advisory | PHI | Berks | 2 hr |
| May 28, 6:09 PM EDT | Tornado Warning | PHI | Chester | 36 min |
| May 28, 6:11 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 64 min |
| May 28, 6:14 PM EDT | Areal Flood Advisory | PHI | Chester | 4 hr |
| May 28, 6:16 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery | 44 min |
| May 28, 6:24 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Delaware | 48 min |
| May 28, 6:41 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 64 min |
| May 28, 6:52 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 38 min |
| May 28, 7:00 PM EDT | Areal Flood Advisory | PHI | Delaware, Philadelphia | 3 hr |
| May 28, 7:42 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 63 min |
| May 28, 7:59 PM EDT | Areal Flood Advisory | PHI | Monroe | 2 hr |
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.