Alert archive / Maryland / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 61, NWS Philadelphia/Mount Holly

June 21, 2016Caroline County, Queen Anne's County, Maryland; Kent County, Sussex County, Delaware; Cape May County, Cumberland County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 21, 2016, 2:51 PM EDT for Caroline County, Queen Anne's County, Maryland; Kent County, Sussex County, Delaware; Cape May County, Cumberland County, New Jersey. It was in force for 54 min. 13 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 21, 2016, 2:51 PM EDT (18:51 UTC)
Expired
Jun 21, 2016, 3:45 PM EDT
In force
54 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
1.0 in
Wind
70.0 mph

Counties Kent County, DE, Sussex County, DE, Caroline County, MD, Queen Anne's County, MD, Cape May County, NJ, Cumberland County, NJ

The radar

The Dover AFB radar (KDOX), 30 km from the middle of the area, began a volume at 18:51 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

TimeReportWhereRemark
Jun 21, 2:56 PM EDTHAIL 0.25Port Norris, NJ
Jun 21, 3:35 PM EDTTSTM WND GST 80Cape May, NJ
Jun 21, 3:35 PM EDTMARINE TSTM WIND 8119 Sse Port Norris, NJ
Jun 21, 3:35 PM EDTNON-TSTM WND GST 8119 Sse Port Norris, NJ
Jun 21, 3:36 PM EDTMARINE TSTM WIND 6519 Sse Port Norris, NJ
Jun 21, 3:36 PM EDTNON-TSTM WND GST 6519 Sse Port Norris, NJ
Jun 21, 3:40 PM EDTTSTM WND DMGGreen Creek, NJMULTIPLE TREES DOWN IN GREEN CREEK AND IN SHADY LANE
Jun 21, 3:40 PM EDTTSTM WND DMGVillas, NJHOUSE WITH WINDOWS BLOWN OUT. AND LARGE BRANCHES DOWN
Jun 21, 3:40 PM EDTTSTM WND GST 48West Cape May, NJ
Jun 21, 3:45 PM EDTTSTM WND DMGGreen Creek, NJLARGE BRANCHES DOWN
Jun 21, 3:45 PM EDTTSTM WND DMGVillas, NJTWO POWER POLES SNAPPED IN HALF ON THE EAST DELAWARE PARKWAY...AND ROOF DAMAGE TO A HOUSE NEAR PACIFIC AVE
Jun 21, 3:45 PM EDTTSTM WND GST 61Cape May Point, NJ
Jun 21, 3:50 PM EDTTSTM WND DMGWhitesboro, NJTREE FELL ON A HOUSE IN WHITESBORO

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.

IssuedProductOfficeLasted
Jun 21, 1:06 PM EDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.9 hours before the alert went out and 85 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.

Skew-T log-pSkew-T log-p diagram, Phillips Aaf/Abe, MD at 12:00Z on 2016-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1292 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2016-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 150 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1292 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
1267 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
150 m²/s²
0-3 km storm-relative helicity
191 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.2

Open this sounding in Storm Lab

The text

As transmitted.

635 
WUUS51 KPHI 211851
SVRPHI
DEC001-005-MDC011-035-NJC009-011-211945-
/O.NEW.KPHI.SV.W.0061.160621T1851Z-160621T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
251 PM EDT TUE JUN 21 2016

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KENT COUNTY IN CENTRAL DELAWARE...
  NORTHERN SUSSEX COUNTY IN SOUTHERN DELAWARE...
  EAST CENTRAL QUEEN ANNE'S COUNTY IN NORTHEASTERN MARYLAND...
  NORTHEASTERN CAROLINE COUNTY IN EASTERN MARYLAND...
  CAPE MAY COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHERN CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 345 PM EDT

* AT 251 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM NEAR FORTESQUE TO NEAR DOVER TO NEAR GOLDSBORO...
  MOVING SOUTHEAST AT 25 MPH.

  HAZARD...70 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT CONSIDERABLE 
           TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO MOBILE HOMES...
           ROOFS...AND OUTBUILDINGS. 

* SEVERE THUNDERSTORMS WILL BE NEAR...
  NEWPORT...DOVER BASE HOUSING...RISING SUN-LEBANON...RISING SUN AND 
  CEDARVILLE AROUND 255 PM EDT. 
  FORTESQUE AROUND 300 PM EDT. 
  DIVIDING CREEK AND PORT NORRIS AROUND 305 PM EDT. 
  BOWERS AROUND 310 PM EDT. 
  BIVALVE...LEESBURG AND MAURICETOWN AROUND 315 PM EDT. 
  VIOLA AROUND 325 PM EDT. 
  ELDORA AROUND 330 PM EDT. 
  HARRINGTON AROUND 335 PM EDT. 

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE LITTLE
CREEK...FREDERICA...RIVERVIEW...MAGNOLIA...WEST WILDWOOD...HOUSTON...
FARMINGTON...ERMA...HENDERSON AND VILLAS.

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 THIS STORM. MOVE INDOORS
IMMEDIATELY. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 3909 7597 3930 7540 3923 7527 3931 7538
      3941 7518 3922 7459 3891 7486 3893 7500
      3915 7493 3922 7537 3905 7537 3892 7528
      3882 7515 3881 7511 3881 7522 3879 7552
TIME...MOT...LOC 1851Z 302DEG 21KT 3926 7521 3918 7548 3906 7584 

HAIL...1.00IN
WIND...70MPH
 
$$

ROBERTSON
1 follow-up statement
447 
WWUS51 KPHI 211924
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
324 PM EDT TUE JUN 21 2016

DEC001-005-MDC011-035-NJC009-011-211945-
/O.CON.KPHI.SV.W.0061.000000T0000Z-160621T1945Z/
KENT DE-SUSSEX DE-QUEEN ANNE'S MD-CAROLINE MD-CAPE MAY NJ-
CUMBERLAND NJ-
324 PM EDT TUE JUN 21 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR KENT...NORTHERN SUSSEX...EAST CENTRAL QUEEN ANNE'S...NORTHEASTERN
CAROLINE...CAPE MAY AND SOUTHERN CUMBERLAND COUNTIES...

AT 323 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES NORTHWEST OF GREEN CREEK TO 7 MILES SOUTHEAST
OF BIG STONE BEACH TO NEAR ANDREWSVILLE...MOVING SOUTHEAST AT 35 MPH.

ANOTHER LINE OF SEVERE THUNDERSTORMS IS ALSO MOVING INTO THE WESTERN
PORTION OF THE WARNING.

HAZARD...70 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT CONSIDERABLE 
         TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO MOBILE HOMES...
         ROOFS...AND OUTBUILDINGS. 

THESE SEVERE STORMS WILL BE NEAR...  GOSHEN AROUND 330 PM EDT.  
MILFORD...GREEN CREEK...CAPE MAY COURT HOUSE AND NORTH CAPE MAY  
AROUND 335 PM EDT.   RIO GRANDE AND SCOTCH BONNET AROUND 340 PM EDT.
 NORTH WILDWOOD...WILDWOOD CREST...AVALON...STONE HARBOR AND DIAMOND
  BEACH AROUND 345 PM EDT. 

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE LITTLE
CREEK...FREDERICA...RIVERVIEW...MAGNOLIA...WEST WILDWOOD...HOUSTON...
FARMINGTON...ERMA...HENDERSON AND VILLAS.

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 THIS STORM. MOVE INDOORS
IMMEDIATELY. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 3909 7597 3930 7540 3923 7527 3931 7538
      3941 7518 3922 7459 3891 7486 3893 7500
      3915 7493 3922 7537 3905 7537 3892 7528
      3882 7515 3881 7511 3881 7522 3879 7552
TIME...MOT...LOC 1923Z 303DEG 32KT 3913 7498 3895 7521 3887 7559 

HAIL...1.00IN
WIND...70MPH
 
$$

ROBERTSON

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 21, 3:37 AM EDTSpecial Weather StatementPHICaroline83 min
Jun 21, 1:52 PM EDTSevere Thunderstorm WarningPHICecil, Kent, Queen Anne's53 min
Jun 21, 2:08 PM EDTSevere Thunderstorm WarningPHIKent, Queen Anne's, Talbot67 min
Jun 21, 2:17 PM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's58 min
Jun 21, 2:32 PM EDTTornado WarningPHIKent, Queen Anne's, Talbot28 min
Jun 21, 2:55 PM EDTSevere Thunderstorm WarningPHICaroline, Queen Anne's, Talbot65 min
Jun 21, 3:36 PM EDTSevere Thunderstorm WarningPHICaroline, Talbot54 min
Jun 21, 3:52 PM EDTSevere Thunderstorm WarningPHICaroline, Queen Anne's, Talbot53 min
Jun 21, 6:36 PM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's, Talbot54 min
Jun 21, 7:20 PM EDTSevere Thunderstorm WarningPHICaroline, Queen Anne's40 min
Jun 21, 4:28 PM EDTSpecial Weather StatementPHISussex62 min
Jun 21, 3:58 AM EDTSpecial Weather StatementPHIWarren47 min
Jun 21, 4:57 AM EDTSpecial Weather StatementPHIHunterdon63 min
Jun 21, 6:16 AM EDTSpecial Weather StatementPHIBurlington, Mercer, Middlesex, Monmouth, Ocean59 min
Jun 21, 6:18 AM EDTSevere Thunderstorm WarningPHIMercer, Middlesex, Monmouth, Ocean46 min
Jun 21, 6:48 AM EDTSmall Craft AdvisoryPHI9 hr
Jun 21, 2:20 PM EDTSpecial Marine WarningPHI55 min
Jun 21, 2:55 PM EDTSevere Thunderstorm WarningPHIOcean35 min
Jun 21, 2:58 PM EDTSpecial Marine WarningPHI62 min
Jun 21, 3:05 PM EDTSpecial Marine WarningPHI85 min
Jun 21, 3:40 PM EDTTornado WarningPHICape May24 min
Jun 21, 3:46 PM EDTSpecial Marine WarningPHI89 min
Jun 21, 3:52 PM EDTSpecial Marine WarningPHI83 min
Jun 21, 3:56 PM EDTSmall Craft Advisory for Hazardous SeasPHI17 hr
Jun 21, 4:06 PM EDTSevere Thunderstorm WarningPHIMonmouth, Ocean39 min
Jun 21, 4:11 PM EDTSpecial Marine WarningPHI64 min
Jun 21, 4:18 PM EDTSpecial Marine WarningPHI87 min
Jun 21, 4:39 PM EDTSevere Thunderstorm WarningPHIMonmouth, Ocean30 min
Jun 21, 5:29 PM EDTSpecial Weather StatementPHIMonmouth46 min
Jun 21, 7:09 PM EDTSpecial Weather StatementPHIMercer51 min
Jun 21, 7:20 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer40 min
Jun 21, 7:27 PM EDTSpecial Marine WarningPHI48 min
Jun 21, 7:37 PM EDTAreal Flood AdvisoryPHIMercer, Middlesex, Monmouth4 hr
Jun 21, 7:51 PM EDTSevere Thunderstorm WarningPHICape May39 min
Jun 21, 7:57 PM EDTSpecial Marine WarningPHI63 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2016Severe Thunderstorm Warnings in Delaware, 2016Severe Thunderstorm Warnings in New Jersey, 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.