Alert archive / Maryland / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 11, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Feb 24, 2016, 8:47 PM EST for 4 states. It was in force for 43 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
- Feb 24, 2016, 8:47 PM EST (01:47 UTC)
- Expired
- Feb 24, 2016, 9:30 PM EST
- In force
- 43 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Kent County, DE, New Castle County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Gloucester County, NJ, Salem County, NJ, Chester County, PA
The radar
The Dover AFB radar (KDOX), 78 km from the middle of the area, began a volume at 01:46 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 |
|---|---|---|---|
| Feb 24, 8:52 PM EST | TSTM WND DMG | Franklin Twp, PA | DOWNED PINE TREE PULLED DOWN ELECTRIC POLS ALONG STRICKERSVILLE ROAD. A TREE FALLING ONTO A CAR CAUSING MINOR DAMAGE WAS ALSO REPORTED. |
| Feb 24, 9:00 PM EST | TSTM WND GST 50 | Blackbird, DE | |
| Feb 24, 9:30 PM EST | TSTM WND DMG | Felton, DE | TREES DOWN ON WIRES. 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 |
|---|---|---|---|
| Feb 24, 3:20 PM EST | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 1.8 hours before the alert went out and 171 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
- 27 J/kg
- Mixed-layer CIN
- -212 J/kg
- Mixed-layer LCL
- 800 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
682
WUUS51 KPHI 250147
SVRPHI
DEC001-003-MDC011-015-029-035-041-NJC015-033-PAC029-250230-
/O.NEW.KPHI.SV.W.0011.160225T0147Z-160225T0230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
847 PM EST WED FEB 24 2016
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NEW CASTLE COUNTY IN NORTHERN DELAWARE...
KENT COUNTY IN CENTRAL DELAWARE...
NORTHEASTERN KENT COUNTY IN NORTHEASTERN MARYLAND...
SOUTHEASTERN CECIL COUNTY IN NORTHEASTERN MARYLAND...
NORTHEASTERN QUEEN ANNE'S COUNTY IN NORTHEASTERN MARYLAND...
NORTHEASTERN CAROLINE COUNTY IN EASTERN MARYLAND...
NORTHEASTERN TALBOT COUNTY IN EASTERN MARYLAND...
NORTHWESTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
WESTERN SALEM COUNTY IN SOUTHERN NEW JERSEY...
SOUTHEASTERN CHESTER COUNTY IN SOUTHEASTERN PENNSYLVANIA...
* UNTIL 930 PM EST
* AT 847 PM EST...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEAR
ELKTON TO NEAR GRIFFIN...AND MOVING EAST AT 40 MPH.
* LOCATIONS IMPACTED INCLUDE...
WILMINGTON...DOVER...NEWARK...MIDDLETOWN...WEST CHESTER...ELKTON...
PENNSVILLE...WESTTOWN...SMYRNA...CARNEYS POINT...ELSMERE...KENNETT
SQUARE...NEW CASTLE...PENNS GROVE...SALEM...DENTON...NORTH EAST...
CAMDEN...CLAYTON AND WEST GROVE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA. ALTHOUGH A TORNADO IS
NOT IMMEDIATELY LIKELY...IF ONE IS SPOTTED...ACT QUICKLY AND MOVE TO
A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EST FOR NORTHERN
DELAWARE...NORTHEASTERN MARYLAND...SOUTHERN NEW JERSEY AND
SOUTHEASTERN PENNSYLVANIA.
LAT...LON 4002 7543 3939 7543 3946 7554 3957 7551
3962 7557 3972 7551 3972 7552 3962 7561
3946 7559 3933 7549 3933 7548 3929 7543
3901 7543 3884 7593 3989 7595
TIME...MOT...LOC 0147Z 260DEG 36KT 3963 7584 3883 7589
$$
PO1 follow-up statement
085
WWUS51 KPHI 250208
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
908 PM EST WED FEB 24 2016
DEC001-003-MDC011-015-029-035-041-NJC015-033-PAC029-250230-
/O.CON.KPHI.SV.W.0011.000000T0000Z-160225T0230Z/
NEW CASTLE DE-KENT DE-KENT MD-CECIL MD-QUEEN ANNE'S MD-CAROLINE MD-
TALBOT MD-GLOUCESTER NJ-SALEM NJ-CHESTER PA-
908 PM EST WED FEB 24 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EST
FOR NEW CASTLE...KENT...NORTHEASTERN KENT...SOUTHEASTERN CECIL...
NORTHEASTERN QUEEN ANNE'S...NORTHEASTERN CAROLINE...NORTHEASTERN
TALBOT...NORTHWESTERN GLOUCESTER...WESTERN SALEM AND SOUTHEASTERN
CHESTER COUNTIES...
AT 907 PM EST...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEW CASTLE
TO ANDREWSVILLE...MOVING EAST AT 40 MPH.
LOCATIONS IMPACTED INCLUDE...
WILMINGTON...DOVER...NEWARK...MIDDLETOWN...WEST CHESTER...ELKTON...
PENNSVILLE...WESTTOWN...SMYRNA...CARNEYS POINT...ELSMERE...KENNETT
SQUARE...NEW CASTLE...PENNS GROVE...SALEM...DENTON...NORTH EAST...
CAMDEN...CLAYTON AND WEST GROVE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. ALTHOUGH A
TORNADO IS NOT IMMEDIATELY LIKELY...IF ONE IS SPOTTED...ACT QUICKLY
AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A
BASEMENT OR SMALL INTERIOR ROOM.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EST FOR NORTHERN
DELAWARE...NORTHEASTERN MARYLAND...SOUTHERN NEW JERSEY AND
SOUTHEASTERN PENNSYLVANIA.
LAT...LON 4002 7543 3939 7543 3946 7554 3957 7551
3962 7557 3972 7551 3972 7552 3962 7561
3946 7559 3933 7549 3933 7548 3929 7543
3901 7543 3884 7593 3989 7595
TIME...MOT...LOC 0207Z 260DEG 36KT 3966 7560 3886 7565
$$
POThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 24, 7:10 PM EST | Flash Flood Warning | PHI | Mercer, Middlesex, Monmouth, Somerset | 3 hr |
| Feb 24, 8:42 PM EST | Areal Flood Advisory | PHI | Hunterdon, Mercer, Morris, Sussex, Warren | 4 hr |
| Feb 24, 8:48 PM EST | Areal Flood Advisory | PHI | Cumberland, Gloucester, Salem | 4 hr |
| Feb 24, 9:02 PM EST | Special Marine Warning | PHI | 58 min | |
| Feb 24, 9:18 PM EST | Areal Flood Advisory | PHI | Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Morris and 4 more | 4 hr |
| Feb 24, 9:24 PM EST | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 3 more | 4 hr |
| Feb 24, 9:40 PM EST | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 35 min |
| Feb 24, 9:55 PM EST | Flash Flood Warning | PHI | Warren | 4 hr |
| Feb 24, 10:05 PM EST | Flash Flood Warning | PHI | Burlington, Camden, Cumberland, Gloucester, Salem | 4 hr |
| Feb 24, 10:06 PM EST | Special Weather Statement | PHI | Sussex | 39 min |
| Feb 24, 10:19 PM EST | Special Marine Warning | PHI | 56 min | |
| Feb 24, 10:26 PM EST | Special Weather Statement | PHI | Sussex | 34 min |
| Feb 24, 10:32 PM EST | Flash Flood Warning | PHI | Burlington, Hunterdon, Mercer, Middlesex, Morris, Somerset and 1 more | 4 hr |
| Feb 24, 10:36 PM EST | Special Weather Statement | PHI | Atlantic, Ocean | 39 min |
| Feb 24, 10:49 PM EST | Areal Flood Advisory | PHI | Atlantic, Burlington, Cape May, Monmouth, Ocean | 4 hr |
| Feb 24, 10:51 PM EST | Special Weather Statement | PHI | Mercer, Middlesex, Morris, Somerset | 54 min |
| Feb 24, 11:03 PM EST | Severe Thunderstorm Warning | PHI | Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Morris and 1 more | 42 min |
| Feb 24, 11:11 PM EST | Special Weather Statement | PHI | Monmouth, Ocean | 64 min |
| Feb 24, 11:22 PM EST | Special Marine Warning | PHI | 53 min | |
| Feb 24, 11:25 PM EST | Severe Thunderstorm Warning | PHI | Burlington, Monmouth, Ocean | 15 min |
| Feb 25, 12:04 AM EST | Special Weather Statement | PHI | Atlantic, Monmouth, Ocean | 56 min |
| Feb 25, 1:55 AM EST | Areal Flood Warning | PHI | Warren | 6 hr |
| Feb 25, 2:04 AM EST | Areal Flood Warning | PHI | Burlington, Camden, Gloucester | 4 hr |
| Feb 25, 2:22 AM EST | Areal Flood Warning | PHI | Burlington, Hunterdon, Mercer, Middlesex, Morris, Somerset and 1 more | 8 hr |
| Feb 25, 2:26 AM EST | River Flood Warning | PHI | Somerset | 33 hr |
| Feb 25, 2:31 AM EST | River Flood Warning | PHI | Morris, Passaic | 31 hr |
| Feb 25, 7:51 AM EST | Areal Flood Warning | PHI | Warren | 6 hr |
| Feb 25, 10:02 AM EST | River Flood Warning | PHI | Morris | 25 hr |
| Feb 25, 10:13 AM EST | Areal Flood Warning | PHI | Somerset | 6 hr |
| Feb 25, 12:37 PM EST | Areal Flood Warning | PHI | Sussex, Warren | 8 hr |
| Feb 25, 3:28 PM EST | Areal Flood Warning | PHI | Somerset | 14 hr |
| Feb 24, 10:15 PM EST | River Flood Warning | PHI | New Castle | 13 hr |
| Feb 24, 10:50 PM EST | Areal Flood Advisory | PHI | Sussex | 4 hr |
| Feb 25, 1:21 AM EST | River Flood Warning | PHI | New Castle | 9 hr |
| Feb 25, 1:33 AM EST | River Flood Warning | PHI | New Castle | 8 hr |
| Feb 25, 1:10 PM EST | River Flood Warning | PHI | New Castle | 8 hr |
| Feb 24, 7:12 PM EST | Severe Thunderstorm Warning | PHI | Cecil | 33 min |
| Feb 24, 7:21 PM EST | Areal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 4 hr |
| Feb 24, 8:02 PM EST | Special Weather Statement | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 58 min |
| Feb 24, 9:44 PM EST | Areal Flood Warning | PHI | Cecil | 10 hr |
| Feb 25, 7:41 AM EST | Areal Flood Warning | PHI | Cecil | 6 hr |
| Feb 24, 7:35 PM EST | Areal Flood Advisory | PHI | Carbon, Monroe | 6 hr |
| Feb 24, 7:39 PM EST | Severe Thunderstorm Warning | PHI | Berks, Chester | 36 min |
| Feb 24, 8:13 PM EST | Special Weather Statement | PHI | Chester, Montgomery | 62 min |
| Feb 24, 8:23 PM EST | Special Weather Statement | PHI | Lehigh, Monroe, Northampton | 67 min |
| Feb 24, 10:11 PM EST | River Flood Warning | PHI | Chester | 20 hr |
| Feb 25, 12:19 AM EST | River Flood Warning | PHI | Montgomery | 14 hr |
| Feb 25, 12:28 AM EST | River Flood Warning | PHI | Chester, Delaware | 18 hr |
| Feb 25, 12:37 AM EST | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 28 hr |
| Feb 25, 2:07 AM EST | River Flood Warning | PHI | Berks, Montgomery | 8 hr |
Nearby
Severe Thunderstorm Warnings in Maryland, 2016Severe Thunderstorm Warnings in New Jersey, 2016Severe Thunderstorm Warnings in Delaware, 2016Every severe thunderstorm warning in 2016
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.