Alert archive / Maryland / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 36, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 24, 2013, 1:22 PM EDT for Cecil County, Maryland; Chester County, Pennsylvania. It was in force for 53 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
- Jun 24, 2013, 1:22 PM EDT (17:22 UTC)
- Expired
- Jun 24, 2013, 2:15 PM EDT
- In force
- 53 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Cecil County, MD, Chester County, PA
The radar
The Dover AFB radar (KDOX), 115 km from the middle of the area, began a volume at 17:22 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 |
|---|---|---|---|
| Jun 24, 2:05 PM EDT | TSTM WND DMG | Nottingham, PA | NUMEROUS TREES DOWN ALONG ROUTE 272 AND KIRKS MILL ROAD NEAR NOTTINGHAM. |
| Jun 24, 2:25 PM EDT | HAIL 0.25 | Rising Sun, MD |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 5.4 hours before the alert went out and 32 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
- 705 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 1279 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
697
WUUS51 KPHI 241722
SVRPHI
MDC015-PAC029-241815-
/O.NEW.KPHI.SV.W.0036.130624T1722Z-130624T1815Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
122 PM EDT MON JUN 24 2013
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN CECIL COUNTY IN NORTHEAST MARYLAND...
SOUTHWESTERN CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA...
* UNTIL 215 PM EDT
* AT 114 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM. THE STORM WAS NEAR GLEN ROY...MOVING EAST
AT 15 MPH. THIS STORM IS CAPABLE OF PRODUCING DAMAGING WIND GUSTS
AND HAIL. NUMEROUS CLOUD TO GROUND LIGHTNING STRIKES AND HEAVY
DOWNPOURS CAN ALSO BE EXPECTED.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
MOUNT VERNON AND FARMINGTON AROUND 130 PM EDT...
OXFORD AND CALVERT AROUND 140 PM EDT...
ZION AROUND 145 PM EDT...
LOMBARD AROUND 150 PM EDT...
BLAKE AROUND 200 PM EDT...
FAIR HILL AND ANDORA AROUND 210 PM EDT...
LAT...LON 3973 7619 3973 7614 3979 7605 3985 7602
3984 7570 3968 7582 3968 7620
TIME...MOT...LOC 1721Z 272DEG 11KT 3975 7606
$$
FORECASTER:
JJM1 follow-up statement
284
WWUS51 KPHI 241801
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
201 PM EDT MON JUN 24 2013
MDC015-241810-
/O.CAN.KPHI.SV.W.0036.000000T0000Z-130624T1815Z/
CECIL MD-
201 PM EDT MON JUN 24 2013
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CECIL COUNTY IS
CANCELLED...
THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS MOVED OUT
OF THE AREA...THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED.
LAT...LON 3973 7580 3973 7616 3973 7619 3973 7614
3979 7605 3985 7602 3984 7570
TIME...MOT...LOC 1800Z 268DEG 11KT 3978 7594
$$
PAC029-241815-
/O.CON.KPHI.SV.W.0036.000000T0000Z-130624T1815Z/
CHESTER PA-
201 PM EDT MON JUN 24 2013
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM EDT
FOR SOUTHWESTERN CHESTER COUNTY...
AT 154 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM. THIS STORM WAS LOCATED NEAR OXFORD...
OR 13 MILES NORTHWEST OF NEWARK...MOVING EAST AT 10 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
KEMBLESVILLE AND WEST GROVE AROUND 215 PM EDT...
THIS STORM IS PRODUCING VERY HEAVY RAIN WHICH IS EXPECTED TO PRODUCE
ROADWAY FLOODING. NUMEROUS CLOUD-TO-GROUND LIGHTNING STRIKES HAVE
BEEN REPORTED. SMALL HAIL IS ALSO POSSIBLE.
LAT...LON 3973 7580 3973 7616 3973 7619 3973 7614
3979 7605 3985 7602 3984 7570
TIME...MOT...LOC 1800Z 268DEG 11KT 3978 7594
$$
FORECASTER:JJMThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 2:07 PM EDT | Areal Flood Advisory | PHI | Cecil | 3 hr |
| Jun 24, 2:18 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 57 min |
| Jun 24, 3:23 PM EDT | Special Weather Statement | PHI | Cecil | 52 min |
| Jun 24, 2:32 PM EDT | Special Weather Statement | PHI | Chester, Delaware, Philadelphia | 58 min |
| Jun 24, 3:40 PM EDT | Special Weather Statement | PHI | Lehigh, Northampton | 50 min |
| Jun 24, 4:50 PM EDT | Special Weather Statement | PHI | Northampton | 40 min |
| Jun 24, 5:18 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 42 min |
| Jun 24, 6:25 PM EDT | Special Weather Statement | PHI | Chester | 50 min |
| Jun 24, 7:47 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 58 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2013Severe Thunderstorm Warnings in Pennsylvania, 2013Every severe thunderstorm warning in 2013
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.