Alert archive / Maryland / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 185, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 17, 2016, 10:25 PM EDT for 5 counties in Maryland; Kent County, New Castle County, Delaware. It was in force for 50 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
- Aug 17, 2016, 10:25 PM EDT (02:25 UTC)
- Expired
- Aug 17, 2016, 11:15 PM EDT
- In force
- 50 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
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
The radar
The Dover AFB radar (KDOX), 60 km from the middle of the area, began a volume at 02:27 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 17, 10:28 PM EDT | TSTM WND DMG | Church Hill, MD | SOME TREES DOWN. TIME ESTIMATED FROM RADAR. |
| Aug 17, 11:11 PM EDT | TSTM WND GST 43 | Dover Air Force Base, DE | |
| Aug 17, 11:20 PM EDT | TSTM WND GST 43 | Blackbird Landing, DE |
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 00:00Z, 2.4 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
- 138 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 1550 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
721
WUUS51 KPHI 180225
SVRPHI
DEC001-003-MDC011-015-029-035-041-180315-
/O.NEW.KPHI.SV.W.0185.160818T0225Z-160818T0315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1025 PM EDT WED AUG 17 2016
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHWESTERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
KENT COUNTY IN CENTRAL DELAWARE...
NORTHEASTERN KENT COUNTY IN NORTHEASTERN MARYLAND...
SOUTH CENTRAL CECIL COUNTY IN NORTHEASTERN MARYLAND...
QUEEN ANNE'S COUNTY IN NORTHEASTERN MARYLAND...
NORTHERN CAROLINE COUNTY IN EASTERN MARYLAND...
NORTHEASTERN TALBOT COUNTY IN EASTERN MARYLAND...
* UNTIL 1115 PM EDT
* AT 1023 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR NEWTOWN TO STARKEY CORNER TO STARR TO
SKIPTON... MOVING EAST AT 45 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED. AREAS OF DAMAGING WINDS HAVE OCCURRED
WITH THIS LINE.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
* LOCATIONS IMPACTED INCLUDE...
DOVER...MIDDLETOWN...CENTERVILLE...SMYRNA...CHESTERTOWN...
CENTREVILLE...CAMDEN...CLAYTON...GREENSBORO...OAKLAND...RIDGELY...
CHESWOLD...CHURCH HILL...CECILTON...MILLINGTON...SUDLERSVILLE...
BETTERTON...BOWERS...GOLDSBORO AND QUEEN ANNE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
IN ADDITION TO DAMAGING WINDS...FREQUENT CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
&&
LAT...LON 3934 7616 3933 7614 3936 7613 3949 7557
3925 7537 3905 7537 3899 7532 3885 7612
3893 7611 3909 7612 3929 7618 3929 7617
3932 7618
TIME...MOT...LOC 0223Z 263DEG 41KT 3926 7612 3911 7599 3896 7599 3887
7605
HAIL...<.75IN
WIND...60MPH
$$
GORSE2 follow-up statements
036
WWUS51 KPHI 180242
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1042 PM EDT WED AUG 17 2016
MDC041-180250-
/O.CAN.KPHI.SV.W.0185.000000T0000Z-160818T0315Z/
TALBOT MD-
1042 PM EDT WED AUG 17 2016
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN TALBOT COUNTY IS
CANCELLED...
THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED. THEREFORE THE
WARNING HAS BEEN CANCELLED.
LAT...LON 3937 7608 3949 7557 3941 7550 3940 7550
3925 7537 3905 7537 3899 7532 3896 7595
TIME...MOT...LOC 0240Z 248DEG 41KT 3934 7600 3923 7583 3905 7582 3900
7587
$$
DEC001-003-MDC011-015-029-035-180315-
/O.CON.KPHI.SV.W.0185.000000T0000Z-160818T0315Z/
NEW CASTLE DE-KENT DE-KENT MD-CECIL MD-QUEEN ANNE'S MD-CAROLINE MD-
1042 PM EDT WED AUG 17 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR SOUTHWESTERN NEW CASTLE...KENT...NORTHEASTERN KENT...SOUTH
CENTRAL CECIL...NORTHEASTERN QUEEN ANNE'S AND NORTHEASTERN CAROLINE
COUNTIES...
AT 1040 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR KENNEDYVILLE TO NEAR MILLINGTON TO NEAR GOLDSBORO
TO OAKLAND...MOVING EAST AT 45 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
THE STRONGEST WINDS SHOULD OCCUR ALONG THE LEADING EDGE OF THE LINE.
LOCATIONS IMPACTED INCLUDE...
DOVER...MIDDLETOWN...SMYRNA...CAMDEN...CLAYTON...GREENSBORO...
OAKLAND...CHESWOLD...CHURCH HILL...CECILTON...MILLINGTON...
SUDLERSVILLE...BETTERTON...BOWERS...GOLDSBORO...WOODSIDE...VIOLA...
HARTLY...DELANEY CORNER AND WARWICK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
IN ADDITION TO DAMAGING WINDS...FREQUENT CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 3937 7608 3949 7557 3941 7550 3940 7550
3925 7537 3905 7537 3899 7532 3896 7595
TIME...MOT...LOC 0240Z 248DEG 41KT 3934 7600 3923 7583 3905 7582 3900
7587
HAIL...<.75IN
WIND...60MPH
$$
GORSE661
WWUS51 KPHI 180317
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1117 PM EDT WED AUG 17 2016
DEC001-003-MDC011-015-029-035-180327-
/O.EXP.KPHI.SV.W.0185.000000T0000Z-160818T0315Z/
NEW CASTLE DE-KENT DE-KENT MD-CECIL MD-QUEEN ANNE'S MD-CAROLINE MD-
1117 PM EDT WED AUG 17 2016
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NEW CASTLE...
KENT...NORTHEASTERN KENT...SOUTH CENTRAL CECIL...NORTHEASTERN QUEEN
ANNE'S AND NORTHEASTERN CAROLINE COUNTIES HAS EXPIRED...
THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE.
LAT...LON 3937 7608 3949 7557 3941 7550 3940 7550
3925 7537 3905 7537 3899 7532 3896 7595
TIME...MOT...LOC 0315Z 263DEG 41KT 3934 7600 3923 7583 3905 7582 3900
7587
$$
MWGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 9:52 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's, Talbot | 38 min |
| Aug 17, 10:44 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 61 min |
| Aug 17, 11:16 PM EDT | Special Weather Statement | PHI | Kent | 44 min |
| Aug 17, 11:46 PM EDT | Special Weather Statement | PHI | Sussex | 59 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 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.