Alert archive / Maryland / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 149, NWS Philadelphia/Mount Holly

June 29, 2019Cecil County, Kent County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 29, 2019, 1:26 PM EDT for Cecil County, Kent County, Maryland. It was in force for 49 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: Jun 29, 2019, 1:26 PM EDT (17:26 UTC)
Expired: Jun 29, 2019, 2:15 PM EDT
In force: 49 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cecil County, MD, Kent County, MD

The radar

The Dover AFB radar (KDOX), 77 km from the middle of the area, began a volume at 17:26 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
Jun 29, 12:08 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 5.4 hours before the alert went out and 134 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: 927 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 1390 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: 2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

696 
WUUS51 KPHI 291726
SVRPHI
MDC015-029-291815-
/O.NEW.KPHI.SV.W.0149.190629T1726Z-190629T1815Z/

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

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northeastern Kent County in northeastern Maryland...
  Southeastern Cecil County in northeastern Maryland...

* Until 215 PM EDT.

* At 126 PM EDT, a severe thunderstorm was located near Hollywood
  Beach, or 8 miles east of Aberdeen Proving Ground, moving southeast
  at 15 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...
  Cecilton, Warwick, Cayots, Crumpton, Bohemias Mills, Kennedyville,
  Sassafras and Galena.

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 3940 7604 3943 7600 3946 7601 3951 7598
      3948 7578 3942 7577 3924 7590 3924 7594
      3937 7606
TIME...MOT...LOC 1726Z 297DEG 14KT 3947 7597 

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

Staarmann

3 follow-up statements

242 
WWUS51 KPHI 291745
SVSPHI

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

MDC015-029-291815-
/O.CON.KPHI.SV.W.0149.000000T0000Z-190629T1815Z/
Kent MD-Cecil MD-
145 PM EDT Sat Jun 29 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM EDT
FOR NORTHERN KENT AND SOUTHEASTERN CECIL COUNTIES...

At 144 PM EDT, a severe thunderstorm was located near Hollywood
Beach, or 9 miles east of Aberdeen Proving Ground, moving southeast
at 10 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...
Cecilton, Warwick, Bohemias Mills and Cayots. 

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 3940 7600 3943 7600 3946 7601 3951 7598
      3948 7578 3942 7577 3934 7583
TIME...MOT...LOC 1744Z 293DEG 7KT 3946 7594 

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

Staarmann

291 
WWUS51 KPHI 291804
SVSPHI

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

MDC029-291814-
/O.CAN.KPHI.SV.W.0149.000000T0000Z-190629T1815Z/
Kent MD-
204 PM EDT Sat Jun 29 2019

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN KENT 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
northeastern Maryland. A severe thunderstorm watch also remains in
effect until 700 PM EDT for northeastern Maryland.

LAT...LON 3947 7600 3951 7598 3948 7578 3938 7582
      3936 7589 3940 7600 3944 7600 3946 7601
TIME...MOT...LOC 1804Z 291DEG 8KT 3945 7590 

$$

MDC015-291815-
/O.CON.KPHI.SV.W.0149.000000T0000Z-190629T1815Z/
Cecil MD-
204 PM EDT Sat Jun 29 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM EDT
FOR SOUTHEASTERN CECIL COUNTY...

At 204 PM EDT, a severe thunderstorm was located near Hollywood
Beach, or 9 miles west of Middletown, moving east at 10 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...
Cecilton and Cayots. 

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 3947 7600 3951 7598 3948 7578 3938 7582
      3936 7589 3940 7600 3944 7600 3946 7601
TIME...MOT...LOC 1804Z 291DEG 8KT 3945 7590 

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

Staarmann

553 
WWUS51 KPHI 291813
SVSPHI

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

MDC015-291822-
/O.EXP.KPHI.SV.W.0149.000000T0000Z-190629T1815Z/
Cecil MD-
213 PM EDT Sat Jun 29 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CECIL COUNTY WILL
EXPIRE AT 215 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
northeastern Maryland. A severe thunderstorm watch also remains in
effect until 700 PM EDT for northeastern Maryland.

LAT...LON 3947 7600 3951 7598 3948 7578 3938 7582
      3936 7589 3940 7600 3944 7600 3946 7601
TIME...MOT...LOC 1812Z 297DEG 14KT 3944 7586 

$$

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, 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, 5:26 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's, Talbot	79 min
Jun 29, 5:38 PM EDT	Areal Flood Advisory	PHI	Caroline, Queen Anne's	109 min

Nearby

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