Alert archive / Maryland / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 154, NWS Philadelphia/Mount Holly

July 28, 2016Caroline County, Kent County, Queen Anne's County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 28, 2016, 4:31 PM EDT for Caroline County, Kent County, Queen Anne's County, Maryland. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 28, 2016, 4:31 PM EDT (20:31 UTC)
Expired: Jul 28, 2016, 5:15 PM EDT
In force: 44 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Caroline County, MD, Kent County, MD, Queen Anne's County, MD

The radar

The Dover AFB radar (KDOX), 71 km from the middle of the area, began a volume at 20:34 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 28, 1:27 PM EDT	Severe Thunderstorm Watch	SPC	11 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.5 hours before the alert went out and 109 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 552 J/kg
Mixed-layer CIN: -98 J/kg
Mixed-layer LCL: 1083 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted.

429 
WUUS51 KPHI 282031
SVRPHI
MDC011-029-035-282115-
/O.NEW.KPHI.SV.W.0154.160728T2031Z-160728T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
431 PM EDT THU JUL 28 2016

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KENT COUNTY IN NORTHEASTERN MARYLAND...
  QUEEN ANNE'S COUNTY IN NORTHEASTERN MARYLAND...
  NORTH CENTRAL CAROLINE COUNTY IN EASTERN MARYLAND...

* UNTIL 515 PM EDT

* AT 431 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  LANGFORD...OR 11 MILES EAST OF MILLERS ISLAND...MOVING EAST AT 20
  MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  CENTERVILLE...CHESTERTOWN...CENTREVILLE...OAKLAND...ROCK HALL...
  CHURCH HILL...MILLINGTON...SUDLERSVILLE...OLD TOWN...
  KENNEDYVILLE...NEWTOWN...CRUMPTON...CARVILLE...OVERTON...
  LANGFORD...HOPE...STARKEY CORNER...MORGNEC...STARR AND BARCLAY.

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 3928 7620 3929 7617 3931 7618 3930 7577
      3896 7587 3900 7617 3901 7619 3901 7621
      3903 7624 3905 7623 3909 7623 3913 7625
      3915 7628
TIME...MOT...LOC 2031Z 284DEG 18KT 3921 7620 

HAIL...1.00IN
WIND...60MPH
 
$$

ROBERTSON

1 follow-up statement

997 
WWUS51 KPHI 282059
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
459 PM EDT THU JUL 28 2016

MDC011-029-035-282115-
/O.CON.KPHI.SV.W.0154.000000T0000Z-160728T2115Z/
KENT MD-QUEEN ANNE'S MD-CAROLINE MD-
459 PM EDT THU JUL 28 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR KENT...QUEEN ANNE'S AND NORTH CENTRAL CAROLINE COUNTIES...

AT 458 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER STARKEY
CORNER... OR NEAR CENTERVILLE...MOVING EAST AT 25 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
CENTERVILLE...CHESTERTOWN...CENTREVILLE...OAKLAND...ROCK HALL...
CHURCH HILL...MILLINGTON...SUDLERSVILLE...OLD TOWN...KENNEDYVILLE...
NEWTOWN...CRUMPTON...CARVILLE...OVERTON...LANGFORD...HOPE...
STARKEY CORNER...MORGNEC...STARR AND BARCLAY.

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.

ANOTHER STRONG STORM WILL MOVE INTO THE WESTERN PORTION OF THIS
WARNING AND COULD BECOME SEVERE AS WELL.

&&

LAT...LON 3928 7620 3929 7617 3931 7618 3930 7577
      3896 7587 3900 7617 3901 7619 3901 7621
      3903 7624 3905 7623 3909 7623 3913 7625
      3915 7628
TIME...MOT...LOC 2058Z 285DEG 21KT 3914 7605 

HAIL...1.00IN
WIND...60MPH
 
$$

ROBERTSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 12:52 PM EDT	Tornado Warning Tornado observed	PHI	Caroline, Talbot	23 min
Jul 28, 1:20 PM EDT	Severe Thunderstorm Warning	PHI	Caroline	40 min
Jul 28, 2:36 PM EDT	Areal Flood Advisory	PHI	Cecil	4 hr
Jul 28, 3:52 PM EDT	Special Weather Statement	PHI	Kent	38 min
Jul 28, 3:54 PM EDT	Areal Flood Advisory	PHI	Cecil, Kent	4 hr
Jul 28, 4:56 PM EDT	Areal Flood Advisory	PHI	Caroline, Kent, Queen Anne's	4 hr
Jul 28, 5:14 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's, Talbot	46 min
Jul 28, 5:56 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's, Talbot	49 min
Jul 28, 6:12 PM EDT	Special Weather Statement	PHI	Caroline	48 min
Jul 28, 6:15 PM EDT	Areal Flood Advisory	PHI	Caroline, Queen Anne's, Talbot	4 hr
Jul 28, 6:25 PM EDT	Severe Thunderstorm Warning	PHI	Caroline	65 min
Jul 28, 6:53 PM EDT	Areal Flood Advisory	PHI	Caroline, Talbot	4 hr

Nearby

Severe Thunderstorm Warnings in Maryland, 2016 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.