Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 201, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 18, 2024, 3:24 PM EDT for Monroe County, Northampton County, Pennsylvania. It was in force for 19 min. 1 report 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
- Aug 18, 2024, 3:24 PM EDT (19:24 UTC)
- Expired
- Aug 18, 2024, 3:43 PM EDT
- In force
- 19 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 134 km from the middle of the area, began a volume at 19:25 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 |
|---|---|---|---|
| Aug 18, 3:41 PM EDT | TSTM WND DMG | 4 Wnw Mount Bethel, PA | A few trees down near Mt Bethel Township. 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 |
|---|---|---|---|
| Aug 18, 2:02 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 7.4 hours before the alert went out and 210 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
- 109 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 582 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 187 m²/s²
- 0-3 km storm-relative helicity
- 205 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
702
WUUS51 KPHI 181924
SVRPHI
PAC089-095-182015-
/O.NEW.KPHI.SV.W.0201.240818T1924Z-240818T2015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
324 PM EDT Sun Aug 18 2024
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southwestern Monroe County in northeastern Pennsylvania...
Northeastern Northampton County in eastern Pennsylvania...
* Until 415 PM EDT.
* At 324 PM EDT, a severe thunderstorm was located over
Brodheadsville, or 14 miles south of Mount Pocono, moving northeast
at 15 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Bangor, Pen Argyl, Wind Gap, East Bangor, Stormville, Reeders,
Brodheadsville, Kunkletown, Saylorsburg, Gilbert, McMichael,
Tannersville, Rossland, Scotrun, Kresgeville, Stroudsburg, Roseto,
Arlington Heights, Effort, and Fiddletown.
This includes Interstate 80 in Pennsylvania between mile markers 301
and 311.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This storm is producing destructive winds and large damaging hail.
SEEK SHELTER NOW inside a sturdy structure and stay away from
windows!
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Mount Holly NJ.
&&
LAT...LON 4082 7544 4092 7551 4111 7529 4089 7511
TIME...MOT...LOC 1924Z 235DEG 12KT 4091 7540
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPS1 follow-up statement
378 WWUS51 KPHI 181943 SVSPHI Severe Weather Statement National Weather Service Mount Holly NJ 343 PM EDT Sun Aug 18 2024 PAC089-095-181953- /O.CAN.KPHI.SV.W.0201.000000T0000Z-240818T2015Z/ Monroe PA-Northampton PA- 343 PM EDT Sun Aug 18 2024 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MONROE AND NORTHEASTERN NORTHAMPTON COUNTIES IS CANCELLED... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning has been cancelled. However, heavy rain is still possible with this thunderstorm. A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for eastern and northeastern Pennsylvania. To report severe weather, contact your nearest law enforcement agency. They will relay your report to the National Weather Service Mount Holly NJ. LAT...LON 4082 7544 4092 7551 4111 7529 4089 7511 TIME...MOT...LOC 1941Z 235DEG 12KT 4095 7533 $$ MPS
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 1:35 AM EDT | Flash Flood Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 2 hr |
| Aug 18, 3:09 AM EDT | Flash Flood Warning | PHI | Bucks | 93 min |
| Aug 18, 3:34 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 41 min |
| Aug 18, 3:48 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 42 min |
| Aug 18, 4:04 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 41 min |
| Aug 18, 4:25 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Montgomery, Northampton | 28 min |
| Aug 18, 4:41 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 34 min |
| Aug 18, 4:56 PM EDT | Flash Flood Warning | PHI | Monroe, Northampton | 6 hr |
| Aug 18, 5:21 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 39 min |
| Aug 18, 5:31 PM EDT | Flash Flood Warning | PHI | Bucks, Lehigh, Northampton | 6 hr |
| Aug 18, 5:47 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 58 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2024Every severe thunderstorm warning in 2024
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.