Alert archive / Maryland / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 117, NWS Philadelphia/Mount Holly

July 19, 2016Queen Anne's County, Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 19, 2016, 11:15 PM EDT for Queen Anne's County, Talbot County, Maryland. It was in force for 60 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 19, 2016, 11:15 PM EDT (03:15 UTC)
Expired: Jul 20, 2016, 12:15 AM EDT
In force: 60 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Queen Anne's County, MD, Talbot County, MD

The radar

The Dover AFB radar (KDOX), 69 km from the middle of the area, began a volume at 03:15 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 nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 3.3 hours before the alert went out and 102 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: 965 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1760 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

As transmitted.

286 
WUUS51 KPHI 200315
SVRPHI
MDC035-041-200415-
/O.NEW.KPHI.SV.W.0117.160720T0315Z-160720T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1115 PM EDT TUE JUL 19 2016

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  TALBOT COUNTY IN EASTERN MARYLAND...
  SOUTHWESTERN QUEEN ANNE'S COUNTY IN NORTHEASTERN MARYLAND...

* UNTIL 1215 AM EDT

* AT 1115 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
  ROMANCOKE... OR NEAR SOUTH RIVER...MOVING EAST AT 15 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...
  EASTON...TALBOT...TRAPPE...ST. MICHAELS...OXFORD...STARR...
  STEVENSVILLE...COPPERVILLE...SKIPTON...WYE MILLS...CHESTER...
  TILGHMAN ISLAND...GRASONVILLE...HAMBLETON...CORDOVA...QUEENSTOWN...
  STEVENSVILLE SOUTH AND DOMINION.

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 3901 7632 3897 7622 3900 7616 3899 7597
      3858 7606 3863 7608 3864 7615 3868 7617
      3868 7621 3876 7622 3871 7628 3878 7629
      3876 7632 3867 7634 3875 7635 3897 7625
      3893 7629 3894 7629 3896 7631 3884 7637
TIME...MOT...LOC 0315Z 281DEG 14KT 3889 7638 

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

ROBERTSON

2 follow-up statements

014 
WWUS51 KPHI 200344
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1144 PM EDT TUE JUL 19 2016

MDC035-041-200415-
/O.CON.KPHI.SV.W.0117.000000T0000Z-160720T0415Z/
TALBOT MD-QUEEN ANNE'S MD-
1144 PM EDT TUE JUL 19 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
FOR TALBOT AND SOUTHWESTERN QUEEN ANNE'S COUNTIES...

AT 1143 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
GRASONVILLE... OR 12 MILES NORTHWEST OF EASTON...MOVING EAST AT 20
MPH.

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

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
EASTON...TALBOT...TRAPPE...ST. MICHAELS...OXFORD...STARR...
STEVENSVILLE...COPPERVILLE...SKIPTON...WYE MILLS...CHESTER...
TILGHMAN ISLAND...GRASONVILLE...HAMBLETON...CORDOVA...QUEENSTOWN...
STEVENSVILLE SOUTH AND DOMINION.

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.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3866 7604 3866 7616 3868 7617 3868 7621
      3876 7622 3871 7628 3878 7629 3876 7632
      3867 7634 3875 7635 3897 7625 3893 7629
      3894 7629 3896 7631 3884 7637 3901 7632
      3897 7622 3900 7616 3899 7597
TIME...MOT...LOC 0343Z 281DEG 18KT 3889 7624 

HAIL...0.75IN
WIND...60MPH
 
$$

JRK

224 
WWUS51 KPHI 200354
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1154 PM EDT TUE JUL 19 2016

MDC035-041-200415-
/O.CON.KPHI.SV.W.0117.000000T0000Z-160720T0415Z/
TALBOT MD-QUEEN ANNE'S MD-
1154 PM EDT TUE JUL 19 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
FOR NORTH CENTRAL TALBOT AND SOUTH CENTRAL QUEEN ANNE'S COUNTIES...

AT 1154 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
COPPERVILLE... OR 9 MILES NORTHWEST OF EASTON...MOVING EAST AT 15
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...
EASTON...SKIPTON...WYE MILLS...CORDOVA AND GRASONVILLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3885 7622 3896 7621 3897 7597 3879 7601
TIME...MOT...LOC 0354Z 281DEG 14KT 3888 7618 

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 19, 11:06 PM EDT	Special Weather Statement	PHI	Talbot	24 min
Jul 19, 11:08 PM EDT	Special Weather Statement	PHI	Kent, Queen Anne's	37 min
Jul 19, 11:35 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's, Talbot	55 min
Jul 19, 11:41 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Queen Anne's	49 min
Jul 20, 12:15 AM EDT	Areal Flood Advisory	PHI	Caroline, Kent, Queen Anne's, Talbot	4 hr
Jul 20, 12:31 AM EDT	Special Weather Statement	PHI	Caroline	44 min
Jul 20, 12:32 AM EDT	Special Weather Statement	PHI	Queen Anne's	43 min
Jul 20, 1:11 AM EDT	Special Weather Statement	PHI	Caroline	49 min
Jul 20, 1:14 AM EDT	Special Weather Statement	PHI	Queen Anne's	46 min
Jul 20, 1:17 AM EDT	Special Weather Statement	PHI	Caroline	43 min

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.