Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2022
Severe Thunderstorm Warning 53, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 22, 2022, 5:08 PM EDT for Chester County, Montgomery County, Pennsylvania. It was in force for 52 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
- May 22, 2022, 5:08 PM EDT (21:08 UTC)
- Expired
- May 22, 2022, 6:00 PM EDT
- In force
- 52 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Chester County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 112 km from the middle of the area, began a volume at 21:10 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 22, 5:12 PM EDT | TSTM WND DMG | 1 W East Coventry Twp, PA | REPORT OF SEVERAL LARGE TREE LIMBS AND ONE TREE DOWN ACROSS A ROAD IN EAST COVENTRY TWP. TIME ESTIMATED FROM RADAR. REPORT VIA FACEBOOK. |
| May 22, 5:45 PM EDT | TSTM WND DMG | 1 Sw Oxford, PA | UTILITY POLES DAMAGED. |
| May 22, 5:45 PM EDT | HAIL 0.75 | Oxford, PA | VIDEO WITH PENNY SIZE HAIL VIA SOCIAL MEDIA. 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 22, 1:53 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 9.1 hours before the alert went out and 181 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
- 212 J/kg
- Mixed-layer CIN
- -211 J/kg
- Mixed-layer LCL
- 1294 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
660
WUUS51 KPHI 222108
SVRPHI
PAC029-091-222200-
/O.NEW.KPHI.SV.W.0053.220522T2108Z-220522T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
508 PM EDT Sun May 22 2022
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southern Montgomery County in southeastern Pennsylvania...
Chester County in southeastern Pennsylvania...
* Until 600 PM EDT.
* At 507 PM EDT, severe thunderstorms were located along a line
extending from Elverson to near Holtwood, moving east at 30 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
West Chester, Norristown, Phoenixville, West Norriton, East
Norriton, Coatesville, Westtown, Downingtown, Conshohocken, Ambler,
Kennett Square, Collegeville, Oxford, Royersford, Parkesburg,
Trappe, West Grove, Honey Brook, Elverson and Glen Roy.
This includes the following highways...
Pennsylvania Turnpike between mile markers 300 and 338.
Northeast Extension between mile markers 21 and 26.
Interstate 76 in Pennsylvania between mile markers 327 and 334.
Interstate 476 in Pennsylvania between mile markers 15 and 19.
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.
&&
LAT...LON 3976 7606 3983 7604 3987 7599 3995 7600
4004 7593 4011 7594 4021 7576 4019 7511
4003 7533 4006 7536 4005 7540 4000 7545
3998 7544 3993 7554 3983 7562 3977 7575
3972 7578 3972 7613
TIME...MOT...LOC 2107Z 248DEG 43KT 4015 7583 3979 7627
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Davis2 follow-up statements
826
WWUS51 KPHI 222134
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
534 PM EDT Sun May 22 2022
PAC029-091-222200-
/O.CON.KPHI.SV.W.0053.000000T0000Z-220522T2200Z/
Montgomery PA-Chester PA-
534 PM EDT Sun May 22 2022
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR SOUTHERN MONTGOMERY AND CHESTER COUNTIES...
At 534 PM EDT, severe thunderstorms were located along a line
extending from Spring Mount to near Cochranville, moving east at 30
mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
West Chester, Norristown, Phoenixville, West Norriton, East Norriton,
Coatesville, Westtown, Downingtown, Conshohocken, Ambler, Kennett
Square, Collegeville, Oxford, Royersford, Parkesburg, Trappe, West
Grove, Glen Roy, Pughtown and Mount Vernon.
This includes the following highways...
Pennsylvania Turnpike between mile markers 305 and 338.
Northeast Extension between mile markers 21 and 26.
Interstate 76 in Pennsylvania between mile markers 327 and 334.
Interstate 476 in Pennsylvania between mile markers 15 and 19.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3976 7606 3983 7604 3987 7599 3994 7600
4004 7587 4010 7579 4021 7576 4019 7511
4003 7533 4006 7536 4005 7540 4000 7545
3998 7544 3993 7554 3983 7562 3977 7575
3972 7578 3972 7613
TIME...MOT...LOC 2134Z 248DEG 43KT 4027 7544 3991 7588
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Davis475
WWUS51 KPHI 222157
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
557 PM EDT Sun May 22 2022
PAC029-091-222206-
/O.EXP.KPHI.SV.W.0053.000000T0000Z-220522T2200Z/
Montgomery PA-Chester PA-
557 PM EDT Sun May 22 2022
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MONTGOMERY AND
CHESTER COUNTIES WILL EXPIRE AT 600 PM EDT...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire. However, gusty winds and heavy rain are still
possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northern Delaware...and eastern and southeastern Pennsylvania.
LAT...LON 3976 7606 3983 7604 3987 7599 3994 7600
4004 7587 4010 7579 4021 7576 4019 7511
4003 7533 4006 7536 4005 7540 4000 7545
3998 7544 3993 7554 3983 7562 3977 7575
3972 7578 3972 7613
TIME...MOT...LOC 2156Z 248DEG 43KT 4037 7513 4001 7557
$$
DavisThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 4:08 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 52 min |
| May 22, 4:34 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 56 min |
| May 22, 5:02 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery, Northampton | 58 min |
| May 22, 5:46 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 30 min |
| May 22, 5:55 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 41 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2022Every severe thunderstorm warning in 2022
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.