Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 242, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 21, 2019, 8:44 PM EDT for 5 counties in Pennsylvania; Warren County, New Jersey. It was in force for 46 min. 7 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 21, 2019, 8:44 PM EDT (00:44 UTC)
- Expired
- Jul 21, 2019, 9:30 PM EDT
- In force
- 46 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Warren County, NJ, Berks County, PA, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 131 km from the middle of the area, began a volume at 00:47 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 21, 8:51 PM EDT | TSTM WND DMG | 1 Nne New Tripoli, PA | SEVERAL REPORTS OF DOWNED TREES AND WIRES IN NEW TRIPOLI INCLUDING ON MEMORIAL RD. TIME ESTIMATED FROM RADAR. |
| Jul 21, 8:52 PM EDT | TSTM WND DMG | 1 Ne New Tripoli, PA | WIRES DOWN ON ORIOLE RD. TIME ESTIMATED FROM RADAR. |
| Jul 21, 9:03 PM EDT | TSTM WND DMG | 1 E Lowhill Twp, PA | SEVERAL REPORTS OF TREES DOWN BETWEEN NEW TRIPOLI AND SCHNECKSVILLE. TREES AND POWER LINES DOWN BLOCKING SEVERAL ROADS. TIME ESTIMATED FROM RADAR. |
| Jul 21, 9:05 PM EDT | TSTM WND GST 49 | North Whitehall Twp, PA | |
| Jul 21, 9:10 PM EDT | TSTM WND DMG | 1 Ssw West Catasauqua, PA | WIRES DOWN ON MADISON LN. TIME ESTIMATED FROM RADAR. |
| Jul 21, 9:19 PM EDT | TSTM WND GST 45 | Lehigh Valley Internati, PA | KABE ASOS. |
| Jul 21, 9:38 PM EDT | TSTM WND DMG | 3 Wsw Pleasant Valley, NJ | DOWNED TREE IN ROADWAY ON ROUTE 57. 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
Brookhaven, NY (KOKX), launched 00:00Z, 0.7 hours before the alert went out and 231 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
- 2295 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 1588 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.4
The text
As transmitted.
835
WUUS51 KPHI 220044
SVRPHI
NJC041-PAC011-025-077-089-095-220130-
/O.NEW.KPHI.SV.W.0242.190722T0044Z-190722T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
844 PM EDT Sun Jul 21 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Central Warren County in northwestern New Jersey...
Northeastern Berks County in eastern Pennsylvania...
Lehigh County in eastern Pennsylvania...
Southeastern Carbon County in northeastern Pennsylvania...
Southwestern Monroe County in northeastern Pennsylvania...
Northampton County in eastern Pennsylvania...
* Until 930 PM EDT.
* At 844 PM EDT, severe thunderstorms were located along a line
extending from Kresgeville to near Wanamakers, moving southeast at
25 mph.
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...
Allentown, Easton, Lehighton, Bethlehem, Forks, Emmaus,
Northampton, Wilson, Washington, Hellertown, Nazareth, Palmerton,
Bangor, Slatington, Pen Argyl, Wind Gap, Bath, Belvidere, Harmony
and Oxford.
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 these storms. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
urban and poor drainage flooding. Do not drive your vehicle through
flooded roadways.
&&
LAT...LON 4063 7600 4074 7576 4077 7581 4098 7553
4085 7484 4051 7538 4042 7549
TIME...MOT...LOC 0044Z 292DEG 22KT 4089 7551 4062 7586
HAIL...1.00IN
WIND...60MPH
$$
Robertson1 follow-up statement
442
WWUS51 KPHI 220109
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
909 PM EDT Sun Jul 21 2019
PAC025-220118-
/O.CAN.KPHI.SV.W.0242.000000T0000Z-190722T0130Z/
Carbon PA-
909 PM EDT Sun Jul 21 2019
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CARBON COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 4056 7582 4068 7556 4093 7529 4085 7484
4051 7538 4042 7549
TIME...MOT...LOC 0108Z 292DEG 28KT 4084 7534 4066 7550 4057 7570
$$
NJC041-PAC011-077-089-095-220130-
/O.CON.KPHI.SV.W.0242.000000T0000Z-190722T0130Z/
Warren NJ-Berks PA-Lehigh PA-Monroe PA-Northampton PA-
909 PM EDT Sun Jul 21 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR CENTRAL WARREN...NORTHEASTERN BERKS...LEHIGH...SOUTH CENTRAL
MONROE AND NORTHAMPTON COUNTIES...
At 908 PM EDT, severe thunderstorms were located along a line
extending from near Wind Gap to Northampton to near Claussville,
moving east at 30 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Allentown, Easton, Bethlehem, Forks, Emmaus, Northampton, Wilson,
Washington, Hellertown, Nazareth, Bangor, Pen Argyl, Wind Gap, Bath,
Belvidere, Harmony, Oxford, Alpha, Topton and Belfast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4056 7582 4068 7556 4093 7529 4085 7484
4051 7538 4042 7549
TIME...MOT...LOC 0108Z 292DEG 28KT 4084 7534 4066 7550 4057 7570
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
$$
RobertsonThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 8:25 PM EDT | Special Weather Statement | PHI | Carbon, Lehigh, Northampton | 50 min |
| Jul 21, 9:24 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Northampton | 51 min |
| Jul 21, 9:30 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 45 min |
| Jul 21, 9:58 PM EDT | Areal Flood Advisory | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 2 hr |
| Jul 21, 10:14 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 46 min |
| Jul 21, 10:30 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh, Northampton | 3 hr |
| Jul 21, 10:31 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh, Northampton | 3 hr |
| Jul 21, 10:35 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 40 min |
| Jul 21, 10:42 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 48 min |
| Jul 21, 10:54 PM EDT | Severe Thunderstorm Warning | PHI | Delaware | 25 min |
| Jul 21, 10:58 PM EDT | Areal Flood Advisory | PHI | Berks, Chester, Montgomery | 59 min |
| Jul 21, 11:05 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery | 40 min |
| Jul 21, 11:31 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 44 min |
| Jul 21, 11:38 PM EDT | Flash Flood Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 2 hr |
| Jul 21, 11:40 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Carbon, Lehigh, Montgomery, Northampton | 50 min |
| Jul 22, 12:05 AM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 40 min |
| Jul 22, 12:45 AM EDT | Special Weather Statement | PHI | Monroe | 30 min |
| Jul 22, 1:11 AM EDT | Special Weather Statement | PHI | Monroe | 34 min |
| Jul 22, 5:32 AM EDT | Areal Flood Warning | PHI | Lehigh | 49 min |
| Jul 22, 1:28 PM EDT | Special Weather Statement | PHI | Monroe | 32 min |
| Jul 22, 1:50 PM EDT | Special Weather Statement | PHI | Northampton | 25 min |
| Jul 22, 3:18 PM EDT | Special Weather Statement | PHI | Chester | 57 min |
| Jul 22, 3:27 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 48 min |
| Jul 22, 3:33 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe, Northampton | 7 hr |
| Jul 22, 3:39 PM EDT | Special Weather Statement | PHI | Berks | 51 min |
| Jul 22, 3:47 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 58 min |
| Jul 22, 4:11 PM EDT | Areal Flood Advisory | PHI | Berks, Bucks, Chester, Lehigh, Montgomery, Northampton | 4 hr |
| Jul 22, 4:16 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 59 min |
| Jul 22, 4:40 PM EDT | Areal Flood Advisory | PHI | Delaware, Montgomery, Philadelphia | 114 min |
| Jul 22, 4:55 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 50 min |
| Jul 22, 5:04 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 41 min |
| Jul 22, 5:05 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh, Northampton | 4 hr |
| Jul 22, 5:14 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 61 min |
| Jul 22, 5:17 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 73 min |
| Jul 22, 5:34 PM EDT | Flash Flood Warning | PHI | Bucks, Lehigh, Montgomery, Northampton | 4 hr |
| Jul 22, 5:40 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Philadelphia | 80 min |
| Jul 22, 5:43 PM EDT | Areal Flood Advisory | PHI | Bucks | 3 hr |
| Jul 22, 5:50 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 40 min |
| Jul 21, 9:05 PM EDT | Special Weather Statement | PHI | Morris | 25 min |
| Jul 21, 10:12 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Monmouth, Morris, Somerset | 48 min |
| Jul 21, 10:13 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 47 min |
| Jul 21, 10:15 PM EDT | Special Marine Warning | PHI | 60 min | |
| Jul 21, 10:58 PM EDT | Special Marine Warning | PHI | 62 min | |
| Jul 21, 11:02 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 31 min |
| Jul 21, 11:27 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 48 min |
| Jul 21, 11:54 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Monmouth, Ocean | 51 min |
| Jul 22, 12:00 AM EDT | Special Marine Warning | PHI | 90 min | |
| Jul 22, 12:16 AM EDT | Special Weather Statement | PHI | Mercer | 29 min |
| Jul 22, 12:34 AM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 41 min |
| Jul 22, 2:00 PM EDT | Special Weather Statement | PHI | Sussex | 45 min |
| Jul 22, 2:13 PM EDT | Special Weather Statement | PHI | Warren | 32 min |
| Jul 22, 2:35 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 40 min |
| Jul 22, 2:58 PM EDT | Small Craft Advisory | PHI | 27 hr | |
| Jul 22, 3:02 PM EDT | Areal Flood Advisory | PHI | Morris, Sussex, Warren | 4 hr |
| Jul 22, 3:12 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex | 48 min |
| Jul 22, 3:43 PM EDT | Flash Flood Warning | PHI | Sussex | 4 hr |
| Jul 22, 4:24 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Sussex, Warren | 51 min |
| Jul 22, 4:52 PM EDT | Special Marine Warning | PHI | 53 min | |
| Jul 22, 5:01 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 44 min |
| Jul 22, 5:52 PM EDT | Special Marine Warning | PHI | 53 min | |
| Jul 22, 6:09 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Cape May, Cumberland, Ocean | 51 min |
| Jul 22, 6:12 PM EDT | Special Marine Warning | PHI | 93 min | |
| Jul 22, 6:21 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Cumberland, Monmouth, Ocean | 4 hr |
| Jul 22, 6:27 PM EDT | Special Marine Warning | PHI | 48 min | |
| Jul 22, 6:27 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Monmouth, Morris, Somerset | 34 min |
| Jul 22, 6:35 PM EDT | Flash Flood Warning | PHI | Hunterdon, Middlesex, Morris, Somerset | 4 hr |
| Jul 22, 6:38 PM EDT | Special Marine Warning | PHI | 67 min | |
| Jul 22, 6:54 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Cape May, Cumberland, Monmouth, Ocean | 51 min |
| Jul 22, 7:39 PM EDT | Special Marine Warning | PHI | 96 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2019Severe Thunderstorm Warnings in New Jersey, 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.