Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 249, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 21, 2019, 10:35 PM EDT for Berks County, Lehigh County, Pennsylvania. It was in force for 40 min. 2 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, 10:35 PM EDT (02:35 UTC)
- Expired
- Jul 21, 2019, 11:15 PM EDT
- In force
- 40 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Berks County, PA, Lehigh County, PA
The radar
The Philadelphia radar (KDIX), 149 km from the middle of the area, began a volume at 02:35 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, 10:37 PM EDT | TSTM WND DMG | 1 Nnw Hamburg, PA | DOWNED TREE ON PORT CLINTON AVENUE NEAR KERNSVILLE DAM. TIME ESTIMATED FROM RADAR. |
| Jul 21, 11:06 PM EDT | TSTM WND DMG | 1 N Lyons, PA | DOWNED TREE ON BASTIAN ROAD IN MAXATAWNY TWP. 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 00:00Z, 2.6 hours before the alert went out and 220 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
- 157 J/kg
- Mixed-layer CIN
- -308 J/kg
- Mixed-layer LCL
- 1994 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -73 m²/s²
- 0-3 km storm-relative helicity
- -77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
397
WUUS51 KPHI 220235
SVRPHI
PAC011-077-220315-
/O.NEW.KPHI.SV.W.0249.190722T0235Z-190722T0315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1035 PM EDT Sun Jul 21 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northeastern Berks County in eastern Pennsylvania...
West central Lehigh County in eastern Pennsylvania...
* Until 1115 PM EDT.
* At 1035 PM EDT, a severe thunderstorm was located over Hamburg, or
9 miles southeast of Schuylkill Haven, moving east at 15 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...
Kutztown, Hamburg, Topton, Shoemakersville, Lyons, Lenhartsville
and Wanamakers.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4058 7605 4057 7602 4063 7600 4068 7589
4067 7567 4046 7568 4052 7623
TIME...MOT...LOC 0235Z 264DEG 14KT 4055 7603
HAIL...1.00IN
WIND...60MPH
$$
Staarmann2 follow-up statements
047
WWUS51 KPHI 220253
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1053 PM EDT Sun Jul 21 2019
PAC011-077-220315-
/O.CON.KPHI.SV.W.0249.000000T0000Z-190722T0315Z/
Berks PA-Lehigh PA-
1053 PM EDT Sun Jul 21 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR NORTHEASTERN BERKS AND WEST CENTRAL LEHIGH COUNTIES...
At 1053 PM EDT, a severe thunderstorm was located over Hamburg, or 13
miles east of Schuylkill Haven, moving east at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Kutztown, Hamburg, Topton, Shoemakersville, Lyons, Lenhartsville and
Wanamakers.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4058 7605 4057 7602 4063 7600 4068 7589
4067 7567 4046 7568 4052 7623
TIME...MOT...LOC 0253Z 264DEG 14KT 4056 7594
HAIL...1.00IN
WIND...60MPH
$$
CMS268
WWUS51 KPHI 220312
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1112 PM EDT Sun Jul 21 2019
PAC011-077-220322-
/O.EXP.KPHI.SV.W.0249.000000T0000Z-190722T0315Z/
Berks PA-Lehigh PA-
1112 PM EDT Sun Jul 21 2019
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BERKS AND WEST
CENTRAL LEHIGH COUNTIES WILL EXPIRE AT 1115 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
LAT...LON 4058 7605 4057 7602 4063 7600 4068 7589
4067 7567 4046 7568 4052 7623
TIME...MOT...LOC 0312Z 264DEG 14KT 4057 7586
$$
CMSThe 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, 8:44 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 46 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, 10:42 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 |
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.