Alert archive / Maryland / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 183, NWS Philadelphia/Mount Holly

June 29, 20194 counties in Maryland; Kent County, Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 29, 2019, 5:26 PM EDT for 4 counties in Maryland; Kent County, Sussex County, Delaware. It was in force for 79 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: Jun 29, 2019, 5:26 PM EDT (21:26 UTC)
Expired: Jun 29, 2019, 6:45 PM EDT
In force: 79 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, Kent County, MD, Queen Anne's County, MD, Talbot County, MD

The radar

The Dover AFB radar (KDOX), 28 km from the middle of the area, began a volume at 21:27 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
Jun 29, 5:45 PM EDT	TSTM WND GST 63	Tilghman, MD	MDDOT GAUGE.
Jun 29, 5:59 PM EDT	MARINE TSTM WIND 56	2 Wnw Lewes, DE	WEATHERFLOW GAUGE.
Jun 29, 6:00 PM EDT	MARINE TSTM WIND 46	1 Ene Lewes, DE

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.

Issued	Product	Office	Lasted
Jun 29, 2:04 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.4 hours before the alert went out and 95 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: 783 J/kg
Mixed-layer CIN: -114 J/kg
Mixed-layer LCL: 1214 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 17 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

015 
WUUS51 KPHI 292126
SVRPHI
DEC001-005-MDC011-029-035-041-292245-
/O.NEW.KPHI.SV.W.0183.190629T2126Z-190629T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
526 PM EDT Sat Jun 29 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Sussex County in southern Delaware...
  Kent County in central Delaware...
  Talbot County in eastern Maryland...
  Southern Queen Anne's County in northeastern Maryland...
  Caroline County in eastern Maryland...
  Southwestern Kent County in northeastern Maryland...

* Until 645 PM EDT.

* At 525 PM EDT, severe thunderstorms were located along a line
  extending from near Bowers to near Romancoke, moving southeast at
  35 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Dover, Easton, Georgetown, Centerville, Talbot, Milford, Seaford,
  Denton, Centreville, Millsboro, Laurel, Harrington, Camden, Lewes,
  Federalsburg, Milton, Selbyville, Bridgeville, Greensboro and
  Oakland.

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 these storms. 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
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3846 7569 3869 7577 3868 7594 3857 7604
      3876 7622 3871 7628 3878 7629 3876 7632
      3867 7634 3899 7633 3897 7622 3903 7621
      3923 7541 3891 7531 3878 7512 3880 7509
      3862 7507 3859 7521 3861 7506 3845 7505
TIME...MOT...LOC 2125Z 327DEG 29KT 3910 7531 3889 7640 

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

Staarmann

4 follow-up statements

173 
WWUS51 KPHI 292151
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
551 PM EDT Sat Jun 29 2019

MDC029-292200-
/O.CAN.KPHI.SV.W.0183.000000T0000Z-190629T2245Z/
Kent MD-
551 PM EDT Sat Jun 29 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN KENT COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until 700 PM EDT for
central and southern Delaware...and eastern and northeastern
Maryland.

LAT...LON 3846 7569 3869 7577 3868 7594 3857 7604
      3876 7622 3871 7628 3878 7629 3876 7632
      3867 7634 3893 7633 3899 7616 3896 7579
      3912 7538 3891 7531 3878 7512 3880 7509
      3862 7507 3859 7521 3861 7506 3845 7505
TIME...MOT...LOC 2150Z 270DEG 29KT 3895 7517 3874 7626 

$$

DEC001-005-MDC011-035-041-292245-
/O.CON.KPHI.SV.W.0183.000000T0000Z-190629T2245Z/
Sussex DE-Kent DE-Talbot MD-Queen Anne's MD-Caroline MD-
551 PM EDT Sat Jun 29 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR SUSSEX...SOUTHERN KENT...TALBOT...SOUTHWESTERN QUEEN ANNE'S AND
CAROLINE COUNTIES...

At 550 PM EDT, severe thunderstorms were located along a line
extending from 9 miles east of Big Stone Beach to near St. Michaels,
moving east at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Wind damage to roofs, 
         siding, trees, and power lines is possible.

Locations impacted include...
Easton, Georgetown, Talbot, Milford, Seaford, Denton, Millsboro,
Laurel, Harrington, Lewes, Federalsburg, Milton, Selbyville,
Bridgeville, Ridgely, Delmar, Trappe, St. Michaels, Dagsboro and
Preston.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. 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
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3846 7569 3869 7577 3868 7594 3857 7604
      3876 7622 3871 7628 3878 7629 3876 7632
      3867 7634 3893 7633 3899 7616 3896 7579
      3912 7538 3891 7531 3878 7512 3880 7509
      3862 7507 3859 7521 3861 7506 3845 7505
TIME...MOT...LOC 2150Z 270DEG 29KT 3895 7517 3874 7626 

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

Staarmann

236 
WWUS51 KPHI 292215
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
615 PM EDT Sat Jun 29 2019

DEC001-MDC035-292224-
/O.CAN.KPHI.SV.W.0183.000000T0000Z-190629T2245Z/
Kent DE-Queen Anne's MD-
615 PM EDT Sat Jun 29 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN KENT AND SOUTHWESTERN
QUEEN ANNE'S COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until 700 PM EDT for
central and southern Delaware...and eastern Maryland.

LAT...LON 3871 7618 3888 7590 3866 7507 3862 7507
      3859 7521 3861 7506 3845 7505 3846 7569
      3869 7577 3868 7594 3857 7604
TIME...MOT...LOC 2214Z 297DEG 30KT 3872 7591 

$$

DEC005-MDC011-041-292245-
/O.CON.KPHI.SV.W.0183.000000T0000Z-190629T2245Z/
Sussex DE-Talbot MD-Caroline MD-
615 PM EDT Sat Jun 29 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR SUSSEX...SOUTHEASTERN TALBOT AND SOUTHERN CAROLINE COUNTIES...

At 614 PM EDT, a severe thunderstorm was located over Preston, or
near Hurlock, moving southeast at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Wind damage to roofs, 
         siding, trees, and power lines is possible.

Locations impacted include...
Easton, Georgetown, Seaford, Millsboro, Laurel, Federalsburg,
Selbyville, Bridgeville, Delmar, Trappe, Dagsboro, Preston,
Sharptown, Millville, Smithville, Gumboro, Agner, Choptank, Windyhill
and Tanyard.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. 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 3871 7618 3888 7590 3866 7507 3862 7507
      3859 7521 3861 7506 3845 7505 3846 7569
      3869 7577 3868 7594 3857 7604
TIME...MOT...LOC 2214Z 297DEG 30KT 3872 7591 

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

Staarmann

066 
WWUS51 KPHI 292226
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
626 PM EDT Sat Jun 29 2019

MDC041-292236-
/O.CAN.KPHI.SV.W.0183.000000T0000Z-190629T2245Z/
Talbot MD-
626 PM EDT Sat Jun 29 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TALBOT COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until 700 PM EDT for
southern Delaware...and eastern Maryland.

LAT...LON 3846 7569 3865 7571 3871 7584 3867 7595
      3870 7599 3879 7591 3867 7514 3863 7513
      3866 7507 3862 7507 3859 7521 3857 7518
      3858 7507 3860 7510 3861 7508 3861 7506
      3845 7505
TIME...MOT...LOC 2226Z 316DEG 29KT 3864 7582 

$$

DEC005-MDC011-292245-
/O.CON.KPHI.SV.W.0183.000000T0000Z-190629T2245Z/
Sussex DE-Caroline MD-
626 PM EDT Sat Jun 29 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR SUSSEX AND SOUTHERN CAROLINE COUNTIES...

At 626 PM EDT, a severe thunderstorm was located over Hurlock, moving
southeast at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Wind damage to roofs, 
         siding, trees, and power lines is possible.

Locations impacted include...
Georgetown, Seaford, Millsboro, Laurel, Federalsburg, Selbyville,
Bridgeville, Delmar, Dagsboro, Preston, Millville, Harmony, Gumboro,
Agner, Choptank, Sycamore, Long Neck, Ocean View, Blades and
Frankford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. 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 3846 7569 3865 7571 3871 7584 3867 7595
      3870 7599 3879 7591 3867 7514 3863 7513
      3866 7507 3862 7507 3859 7521 3857 7518
      3858 7507 3860 7510 3861 7508 3861 7506
      3845 7505
TIME...MOT...LOC 2226Z 316DEG 29KT 3864 7582 

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

Staarmann

009 
WWUS51 KPHI 292239
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
639 PM EDT Sat Jun 29 2019

DEC005-MDC011-292248-
/O.EXP.KPHI.SV.W.0183.000000T0000Z-190629T2245Z/
Sussex DE-Caroline MD-
639 PM EDT Sat Jun 29 2019

...THE SEVERE THUNDERSTORM WARNING FOR SUSSEX AND SOUTHERN CAROLINE
COUNTIES WILL EXPIRE AT 645 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small 
hail, gusty winds, and heavy rain are still possible with this 
thunderstorm.

A severe thunderstorm watch remains in effect until 700 PM EDT for
southern Delaware...and eastern Maryland.

LAT...LON 3846 7569 3865 7571 3871 7584 3867 7595
      3870 7599 3879 7591 3867 7514 3863 7513
      3866 7507 3862 7507 3859 7521 3857 7518
      3858 7507 3860 7510 3861 7508 3861 7506
      3845 7505
TIME...MOT...LOC 2238Z 327DEG 29KT 3857 7576 

$$

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 1:19 PM EDT	Special Weather Statement	PHI	Cecil	26 min
Jun 29, 1:26 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent	49 min
Jun 29, 2:08 PM EDT	Areal Flood Advisory	PHI	Cecil	3 hr
Jun 29, 2:12 PM EDT	Special Weather Statement	PHI	Cecil	33 min
Jun 29, 2:44 PM EDT	Special Weather Statement	PHI	Cecil	31 min
Jun 29, 2:47 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	28 min
Jun 29, 3:27 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	53 min
Jun 29, 3:39 PM EDT	Special Weather Statement	PHI	Cecil	51 min
Jun 29, 3:59 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent	46 min
Jun 29, 4:14 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's	46 min
Jun 29, 4:38 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent	52 min
Jun 29, 4:55 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's	50 min
Jun 29, 4:58 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Queen Anne's, Talbot	47 min
Jun 29, 5:38 PM EDT	Areal Flood Advisory	PHI	Caroline, Queen Anne's	109 min
Jun 29, 2:33 PM EDT	Special Weather Statement	PHI	Kent	27 min
Jun 29, 2:57 PM EDT	Special Weather Statement	PHI	Kent	33 min
Jun 29, 3:06 PM EDT	Severe Thunderstorm Warning	PHI	Kent	39 min
Jun 29, 3:13 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	8 min
Jun 29, 3:24 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	36 min
Jun 29, 4:00 PM EDT	Flash Flood Warning	PHI	New Castle	3 hr
Jun 29, 4:24 PM EDT	Severe Thunderstorm Warning	PHI	Kent	36 min
Jun 29, 4:52 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	38 min
Jun 29, 6:38 PM EDT	Special Weather Statement	PHI	Sussex	52 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2019 Severe Thunderstorm Warnings in Delaware, 2019 Every severe thunderstorm warning in 2019

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.