Alert archive / Maryland / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 177, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 14, 2016, 9:34 PM EDT for Cecil County, Kent County, Maryland; Kent County, New Castle County, Delaware. It was in force for 56 min. 4 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 14, 2016, 9:34 PM EDT (01:34 UTC)
- Expired
- Aug 14, 2016, 10:30 PM EDT
- In force
- 56 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, Cecil County, MD, Kent County, MD
The radar
The Dover AFB radar (KDOX), 63 km from the middle of the area, began a volume at 01:36 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 14, 9:35 PM EDT | TSTM WND DMG | Galena, MD | MULTIPLE TREES DOWN ACROSS ROADS. ONE TREE FELL INTO A HOUSE. TIME ESTIMATED FROM RADAR. |
| Aug 14, 9:45 PM EDT | TSTM WND DMG | Townsend, DE | MULTIPLE TREES AND WIRES BLOWN DOWN AROUND TOWNSEND. TIME ESTIMATED FROM RADAR. |
| Aug 14, 9:50 PM EDT | TSTM WND DMG | Smyrna, DE | TREES BLOWN DOWN IN SMYRNA AND CLAYTON. TIME ESTIMATED FROM RADAR. |
| Aug 14, 9:55 PM EDT | TSTM WND GST 45 | Blackbird, DE |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 1.6 hours before the alert went out and 156 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
- 444 J/kg
- Mixed-layer CIN
- -123 J/kg
- Mixed-layer LCL
- 1571 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
194
WUUS51 KPHI 150134
SVRPHI
DEC001-003-MDC015-029-150230-
/O.NEW.KPHI.SV.W.0177.160815T0134Z-160815T0230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
934 PM EDT SUN AUG 14 2016
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHWESTERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
NORTHERN KENT COUNTY IN CENTRAL DELAWARE...
NORTHEASTERN KENT COUNTY IN NORTHEASTERN MARYLAND...
SOUTH CENTRAL CECIL COUNTY IN NORTHEASTERN MARYLAND...
* UNTIL 1030 PM EDT
* AT 933 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
KENNEDYVILLE... OR 11 MILES SOUTHEAST OF ABERDEEN PROVING
GROUND...MOVING EAST AT 40 MPH. WIND GUSTS FROM 50-60 MPH HAVE
BEEN REPORTED WITH THIS LINE OF STORMS OVER CHESAPEAKE BAY.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
* LOCATIONS IMPACTED INCLUDE...
DOVER...MIDDLETOWN...SMYRNA...CLAYTON...CHESWOLD...CECILTON...
DOVER SPEEDWAY...WOODLAND BEACH...SASSAFRAS...GREEN SPRING...
DELANEY CORNER...WARWICK...MASSEY...TOWNSEND...GALENA...KENTON...
LITTLE CREEK...LEIPSIC AND CHAMBERSVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3941 7601 3944 7600 3943 7547 3937 7545
3937 7546 3939 7549 3933 7544 3913 7537
3933 7605
TIME...MOT...LOC 0133Z 283DEG 36KT 3937 7596
HAIL...<.75IN
WIND...60MPH
$$
MWG3 follow-up statements
501
WWUS51 KPHI 150159
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
959 PM EDT SUN AUG 14 2016
DEC001-003-MDC015-029-150230-
/O.CON.KPHI.SV.W.0177.000000T0000Z-160815T0230Z/
NEW CASTLE DE-KENT DE-KENT MD-CECIL MD-
959 PM EDT SUN AUG 14 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT
FOR SOUTHWESTERN NEW CASTLE...NORTHERN KENT...NORTHEASTERN KENT AND
SOUTHEASTERN CECIL COUNTIES...
AT 956 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER GREEN
SPRING... OR 9 MILES SOUTH OF MIDDLETOWN...MOVING EAST AT 40 MPH.
HAZARD...70 MPH WIND GUSTS.
SOURCE...WIND GUSTS BETWEEN 50 AND 70 MPH HAVE BEEN MEASURED
THROUGHOUT THE HISTORY OF THIS LINE OF THUNDERSTORMS.
IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO MOBILE
HOMES...ROOFS...AND OUTBUILDINGS.
LOCATIONS IMPACTED INCLUDE...
DOVER...MIDDLETOWN...SMYRNA...CLAYTON...CHESWOLD...CECILTON...
DOVER SPEEDWAY...WOODLAND BEACH...SASSAFRAS...GREEN SPRING...
DELANEY CORNER...WARWICK...MASSEY...TOWNSEND...GALENA...KENTON...
LITTLE CREEK...LEIPSIC AND CHAMBERSVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3943 7586 3943 7547 3937 7545 3937 7546
3939 7549 3933 7544 3913 7537 3928 7588
3936 7589
TIME...MOT...LOC 0156Z 283DEG 36KT 3932 7566
HAIL...<.75IN
WIND...70MPH
$$
MWG347
WWUS51 KPHI 150215
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1015 PM EDT SUN AUG 14 2016
MDC015-029-150224-
/O.CAN.KPHI.SV.W.0177.000000T0000Z-160815T0230Z/
KENT MD-CECIL MD-
1015 PM EDT SUN AUG 14 2016
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN KENT AND
SOUTHEASTERN CECIL COUNTIES IS CANCELLED...
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.
LAT...LON 3943 7547 3937 7545 3937 7546 3939 7548
3939 7549 3933 7544 3913 7537 3924 7576
3943 7577
TIME...MOT...LOC 0214Z 283DEG 36KT 3928 7543
$$
DEC001-003-150230-
/O.CON.KPHI.SV.W.0177.000000T0000Z-160815T0230Z/
NEW CASTLE DE-KENT DE-
1015 PM EDT SUN AUG 14 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT
FOR SOUTHWESTERN NEW CASTLE AND NORTHERN KENT COUNTIES...
AT 1014 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR WOODLAND
BEACH...OR 9 MILES NORTHEAST OF DOVER...MOVING EAST AT 40 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
LOCATIONS IMPACTED INCLUDE...
DOVER...MIDDLETOWN...SMYRNA...CLAYTON...CHESWOLD...DOVER SPEEDWAY...
WOODLAND BEACH...GREEN SPRING...DELANEY CORNER...TOWNSEND...KENTON...
LITTLE CREEK...LEIPSIC AND CHAMBERSVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3943 7547 3937 7545 3937 7546 3939 7548
3939 7549 3933 7544 3913 7537 3924 7576
3943 7577
TIME...MOT...LOC 0214Z 283DEG 36KT 3928 7543
HAIL...<.75IN
WIND...60MPH
$$
SFJ873
WWUS51 KPHI 150222
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1022 PM EDT SUN AUG 14 2016
DEC001-003-150232-
/O.EXP.KPHI.SV.W.0177.000000T0000Z-160815T0230Z/
NEW CASTLE DE-KENT DE-
1022 PM EDT SUN AUG 14 2016
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NEW CASTLE AND
NORTHERN KENT COUNTIES WILL EXPIRE AT 1030 PM EDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER GUSTY WINDS
TO 40 MPH ARE STILL POSSIBLE WITH THIS THUNDERSTORM.
LAT...LON 3943 7547 3937 7545 3937 7546 3939 7548
3939 7549 3933 7544 3913 7537 3924 7576
3943 7577
TIME...MOT...LOC 0220Z 283DEG 36KT 3928 7543
$$
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 8:46 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's, Talbot | 29 min |
| Aug 14, 9:01 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 44 min |
| Aug 14, 9:42 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 49 min |
| Aug 14, 9:49 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 41 min |
| Aug 15, 3:21 PM EDT | Heat Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 29 hr |
| Aug 15, 6:56 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's | 64 min |
| Aug 15, 7:08 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 37 min |
| Aug 15, 7:49 PM EDT | Special Weather Statement | PHI | Kent | 41 min |
| Aug 14, 10:36 PM EDT | Special Weather Statement | PHI | Sussex | 24 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.