Alert archive / Maryland / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 20, NWS Philadelphia/Mount Holly

April 26, 20194 states

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 26, 2019, 4:28 PM EDT for 4 states. It was in force for 47 min. 16 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: Apr 26, 2019, 4:28 PM EDT (20:28 UTC)
Expired: Apr 26, 2019, 5:15 PM EDT
In force: 47 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ, Chester County, PA

The radar

The Dover AFB radar (KDOX), 38 km from the middle of the area, began a volume at 20:31 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
Apr 26, 4:28 PM EDT	TSTM WND DMG	Carville, MD	DOWNED TREES AND BLOWN DEBRIS FORCED LANE RESTRICTIONS ON U.S. HIGHWAY 301 AT STATE HIGHWAY 305. TIME ESTIMATED FROM RADAR.
Apr 26, 4:28 PM EDT	TSTM WND DMG	Carville, MD	DOWNED TREES AND BLOWN DEBRIS FORCED LANE RESTRICTIONS ON U.S. HIGHWAY 301 AT STATE HIGHWAY 305. TIME ESTIMATED FROM RADAR.
Apr 26, 4:30 PM EDT	TSTM WND DMG	3 Sw Earleville, MD	SEVERAL PINE TREES UPROOTED. DELAYED REPORT FROM FRIDAY...TIME ESTIMATED FROM RADAR.
Apr 26, 4:32 PM EDT	TSTM WND DMG	1 N Crumpton, MD	TREE DAMAGE AT A HOME NEAR ROUTE 290 AND 291. IRRIGATION SYSTEM ACROSS THE STREET COLLAPSED.
Apr 26, 4:32 PM EDT	TSTM WND DMG	3 Wnw Sudlersville, MD	DOWNED TREES AND BLOWN DEBRIS CLOSED U.S. HIGHWAY 301 NEAR DUDLEY CONNERS ROAD. TIME ESTIMATED FROM RADAR.
Apr 26, 4:32 PM EDT	TSTM WND DMG	3 Wnw Sudlersville, MD	DOWNED TREES AND BLOWN DEBRIS CLOSED U.S. HIGHWAY 301 NEAR DUDLEY CONNERS ROAD. TIME ESTIMATED FROM RADAR.
Apr 26, 4:35 PM EDT	TSTM WND GST 50	2 N Galena, MD	MEASURED IN FREDERICKTOWN.
Apr 26, 4:36 PM EDT	TSTM WND DMG	Sudlersville, MD	EMERGENCY SERVICES REPORTS TREES DOWN AROUND THE AREA. TIME ESTIMATED FROM RADAR.
Apr 26, 4:36 PM EDT	TSTM WND DMG	Sudlersville, MD	EMERGENCY SERVICES REPORTS TREES DOWN AROUND THE AREA. TIME ESTIMATED FROM RADAR.
Apr 26, 4:45 PM EDT	TSTM WND DMG	2 N Sassafras, MD	LARGE PORTION OF A ROOF LIFTED OFF A BARN. DELAYED REPORT FROM FRIDAY...TIME ESTIMATED FROM RADAR.
Apr 26, 4:45 PM EDT	TSTM WND DMG	2 Wnw Saint Georges, DE	SEVERAL TREES WERE BLOWN DOWN IN A MOBILE HOME PARK. TIME ESTIMATED FROM RADAR.
Apr 26, 4:45 PM EDT	TSTM WND GST 45	Kenton, DE
Apr 26, 4:52 PM EDT	TSTM WND GST 59	Townsend, DE
Apr 26, 4:53 PM EDT	TSTM WND DMG	Odessa, DE	MULTIPLE LARGE TREES DAMAGED INCLUDING SOME TREES SPLIT.
Apr 26, 4:58 PM EDT	TSTM WND DMG	Smyrna, DE	LARGE TREES DOWN, SOME CAUSING PROPERTY DAMAGE. TIME ESTIMATED FROM RADAR.
Apr 26, 5:05 PM EDT	TSTM WND GST 60	4 Ssw Elsinboro Twp, NJ	MEASURED AT LOWER ALLOWAYS CREEK.

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
Apr 26, 1:33 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 8.5 hours before the alert went out and 126 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: 44 J/kg
Mixed-layer CIN: -206 J/kg
Mixed-layer LCL: 1440 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

439 
WUUS51 KPHI 262028
SVRPHI
DEC001-003-005-MDC011-015-029-035-041-NJC011-015-033-PAC029-262115-
/O.NEW.KPHI.SV.W.0020.190426T2028Z-190426T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
428 PM EDT FRI APR 26 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Western Sussex County in southern Delaware...
  New Castle County in northern Delaware...
  Kent County in central Delaware...
  Talbot County in eastern Maryland...
  Queen Anne's County in northeastern Maryland...
  Caroline County in eastern Maryland...
  Northeastern Kent County in northeastern Maryland...
  Cecil County in northeastern Maryland...
  West central Cumberland County in southern New Jersey...
  Western Salem County in southern New Jersey...
  West central Gloucester County in southern New Jersey...
  South central Chester County in southeastern Pennsylvania...

* Until 515 PM EDT.

* At 428 PM EDT, severe thunderstorms were located along a line
  extending from Lombard to near Starkey Corner to near University Of
  Maryland Center For Environmental Studies, moving east at 40 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Wilmington, Dover, Newark, Middletown, Easton, Elkton, Centerville,
  Calvert, Pennsville, Smyrna, Carneys Point, Seaford, Elsmere, New
  Castle, Chestertown, Penns Grove, Salem, Oxford, Denton and
  Centreville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Mount Holly NJ.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A tornado watch remains in effect until 900 PM EDT for central,
northern and southern Delaware...eastern and northeastern Maryland...
southern New Jersey...and southeastern Pennsylvania.

LAT...LON 3846 7569 3864 7571 3869 7577 3871 7584
      3868 7593 3860 7599 3857 7604 3870 7622
      3937 7608 3943 7600 3952 7598 3955 7605
      3979 7601 3978 7530 3933 7540 3939 7549
      3930 7540 3846 7561
TIME...MOT...LOC 2028Z 277DEG 36KT 3973 7596 3911 7605 3862 7617 

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

MPS

2 follow-up statements

818 
WWUS51 KPHI 262056
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
456 PM EDT FRI APR 26 2019

MDC041-PAC029-262105-
/O.CAN.KPHI.SV.W.0020.000000T0000Z-190426T2115Z/
Talbot MD-Chester PA-
456 PM EDT FRI APR 26 2019

...THE SEVERE THUNDERSTORM WARNING FOR TALBOT AND SOUTH CENTRAL
CHESTER COUNTIES IS CANCELLED...

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

A tornado watch remains in effect until 900 PM EDT for central,
northern and southern Delaware...eastern and northeastern Maryland...
southern New Jersey...and southeastern Pennsylvania.

LAT...LON 3865 7572 3871 7584 3868 7593 3962 7581
      3979 7572 3978 7530 3933 7540 3939 7549
      3930 7540 3846 7561 3846 7569
TIME...MOT...LOC 2055Z 270DEG 33KT 3970 7566 3908 7575 3859 7588 

$$

DEC001-003-005-MDC011-015-029-035-NJC011-015-033-262115-
/O.CON.KPHI.SV.W.0020.000000T0000Z-190426T2115Z/
Sussex DE-New Castle DE-Kent DE-Queen Anne's MD-Caroline MD-Kent MD-
Cecil MD-Cumberland NJ-Salem NJ-Gloucester NJ-
456 PM EDT FRI APR 26 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR WESTERN SUSSEX...NEW CASTLE...KENT...NORTHEASTERN QUEEN ANNE'S...
CAROLINE...NORTHEASTERN KENT...SOUTHEASTERN CECIL...WEST CENTRAL
CUMBERLAND...WESTERN SALEM AND WEST CENTRAL GLOUCESTER COUNTIES...

At 455 PM EDT, severe thunderstorms were located along a line
extending from Stanton to near Goldsboro to near Hurlock, moving east
at 40 mph.

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

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Wilmington, Dover, Newark, Middletown, Elkton, Pennsville, Smyrna,
Carneys Point, Seaford, Elsmere, New Castle, Penns Grove, Salem,
Denton, Laurel, Harrington, Woodstown, Alloway, Camden and Clayton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Mount Holly NJ.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A tornado watch remains in effect until 900 PM EDT for central,
northern and southern Delaware...eastern and northeastern Maryland...
southern New Jersey...and southeastern Pennsylvania.

LAT...LON 3865 7572 3871 7584 3868 7593 3962 7581
      3979 7572 3978 7530 3933 7540 3939 7549
      3930 7540 3846 7561 3846 7569
TIME...MOT...LOC 2055Z 270DEG 33KT 3970 7566 3908 7575 3859 7588 

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

MPS

595 
WWUS51 KPHI 262108
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
508 PM EDT FRI APR 26 2019

DEC001-003-005-MDC011-015-029-035-NJC011-015-033-262118-
/O.EXP.KPHI.SV.W.0020.000000T0000Z-190426T2115Z/
Sussex DE-New Castle DE-Kent DE-Queen Anne's MD-Caroline MD-Kent MD-
Cecil MD-Cumberland NJ-Salem NJ-Gloucester NJ-
508 PM EDT FRI APR 26 2019

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN SUSSEX...NEW CASTLE...
KENT...NORTHEASTERN QUEEN ANNE'S...CAROLINE...NORTHEASTERN KENT...
SOUTHEASTERN CECIL...WEST CENTRAL CUMBERLAND...WESTERN SALEM AND WEST
CENTRAL GLOUCESTER COUNTIES WILL EXPIRE AT 515 PM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with these thunderstorms.

A tornado watch remains in effect until 900 PM EDT for central,
northern and southern Delaware...eastern and northeastern Maryland...
southern New Jersey...and southeastern Pennsylvania.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
in Mount Holly NJ.

A new Severe Thunderstorm Warning is now in effect until 5:45 
pm.

LAT...LON 3865 7572 3871 7584 3868 7593 3962 7581
      3979 7572 3978 7530 3933 7540 3939 7549
      3930 7540 3846 7561 3846 7569
TIME...MOT...LOC 2108Z 277DEG 36KT 3969 7552 3907 7561 3858 7574 

$$

MPS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 10:23 AM EDT	Special Weather Statement	PHI	Caroline	37 min
Apr 26, 10:51 AM EDT	Special Weather Statement	PHI	Caroline	24 min
Apr 26, 3:32 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	58 min
Apr 26, 4:01 PM EDT	Tornado Warning	PHI	Cecil, Kent, Queen Anne's	29 min
Apr 26, 4:24 PM EDT	Tornado Warning	PHI	Cecil, Kent	36 min
Apr 26, 4:59 PM EDT	Areal Flood Advisory	PHI	Cecil, Kent, Queen Anne's	4 hr
Apr 26, 5:07 PM EDT	Severe Thunderstorm Warning	PHI	Caroline	38 min
Apr 26, 11:45 AM EDT	Special Weather Statement	PHI	Philadelphia	45 min
Apr 26, 3:51 PM EDT	Special Weather Statement	PHI	Berks, Chester	69 min
Apr 26, 4:19 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester	56 min
Apr 26, 4:53 PM EDT	Severe Thunderstorm Warning	PHI	Delaware	52 min
Apr 26, 5:07 PM EDT	Special Weather Statement	PHI	Bucks, Montgomery, Philadelphia	53 min
Apr 26, 5:15 PM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	4 hr
Apr 26, 5:17 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery	43 min
Apr 26, 5:28 PM EDT	Severe Thunderstorm Warning	PHI	Montgomery, Philadelphia	47 min
Apr 26, 5:44 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	61 min
Apr 26, 5:57 PM EDT	Areal Flood Advisory	PHI	Bucks	4 hr
Apr 26, 6:34 PM EDT	Areal Flood Advisory	PHI	Berks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 1 more	2 hr
Apr 26, 3:41 AM EDT	Gale Watch	PHI		12 hr
Apr 26, 10:15 AM EDT	Special Weather Statement	PHI	Gloucester, Salem	30 min
Apr 26, 10:53 AM EDT	Special Weather Statement	PHI	Camden, Cumberland, Gloucester	37 min
Apr 26, 11:19 AM EDT	Special Weather Statement	PHI	Cumberland, Salem	41 min
Apr 26, 11:22 AM EDT	Special Marine Warning	PHI		23 min
Apr 26, 11:54 AM EDT	Special Weather Statement	PHI	Burlington, Camden	51 min
Apr 26, 12:30 PM EDT	Special Weather Statement	PHI	Middlesex, Monmouth	45 min
Apr 26, 12:41 PM EDT	Special Weather Statement	PHI	Atlantic, Cumberland	34 min
Apr 26, 1:44 PM EDT	Special Marine Warning	PHI		61 min
Apr 26, 1:53 PM EDT	Special Weather Statement	PHI	Atlantic, Cape May	37 min
Apr 26, 2:17 PM EDT	Special Weather Statement	PHI	Cape May	28 min
Apr 26, 2:33 PM EDT	Areal Flood Advisory	PHI	Atlantic, Cape May	2 hr
Apr 26, 2:52 PM EDT	Special Marine Warning	PHI		53 min
Apr 26, 3:34 PM EDT	Special Marine Warning	PHI		56 min
Apr 26, 3:54 PM EDT	Gale Warning	PHI		23 hr
Apr 26, 4:29 PM EDT	Special Marine Warning	PHI		61 min
Apr 26, 5:16 PM EDT	Special Marine Warning	PHI		44 min
Apr 26, 5:37 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more	38 min
Apr 26, 5:56 PM EDT	Special Marine Warning	PHI		64 min
Apr 26, 6:12 PM EDT	Special Weather Statement	PHI	Atlantic, Cape May	33 min
Apr 26, 6:14 PM EDT	Areal Flood Advisory	PHI	Atlantic, Cape May, Cumberland	4 hr
Apr 26, 6:22 PM EDT	Special Weather Statement	PHI	Middlesex, Monmouth, Morris, Ocean, Somerset	113 min
Apr 26, 6:39 PM EDT	Special Marine Warning	PHI		57 min
Apr 26, 9:52 AM EDT	Special Weather Statement	PHI	Kent	38 min
Apr 26, 10:05 AM EDT	Special Weather Statement	PHI	Sussex	40 min
Apr 26, 2:01 PM EDT	Areal Flood Advisory	PHI	Sussex	3 hr
Apr 26, 5:39 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	28 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2019 Severe Thunderstorm Warnings in New Jersey, 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.