Alert archive / Maryland / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 51, NWS Philadelphia/Mount Holly

May 26, 2019Caroline County, Kent County, Queen Anne's County, Maryland; Kent County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 26, 2019, 9:45 PM EDT for Caroline County, Kent County, Queen Anne's County, Maryland; Kent County, Delaware. It was in force for 45 min. 6 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: May 26, 2019, 9:45 PM EDT (01:45 UTC)
Expired: May 26, 2019, 10:30 PM EDT
In force: 45 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

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

The radar

The Dover AFB radar (KDOX), 55 km from the middle of the area, began a volume at 01:45 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
May 26, 9:45 PM EDT	TSTM WND DMG	3 Ese Crumpton, MD	SEVERAL REPORTS OF TREES DOWN BETWEEN CRUMPTON AND SUDLERSVILLE. TIME ESTIMATED FROM RADAR.
May 26, 9:45 PM EDT	TSTM WND DMG	3 Ese Crumpton, MD	SEVERAL REPORTS OF TREES DOWN BETWEEN CRUMPTON AND SUDLERSVILLE. TIME ESTIMATED FROM RADAR.
May 26, 9:47 PM EDT	TSTM WND DMG	1 Wsw Millington, MD	DELAYED REPORT. DOWNED UTILITY FORCED THE CLOSURE OF STATE HIGHWAY 313 BETWEEN GROFF ROAD AND STATE HIGHWAY 544. TIME ESTIMATED FROM RADAR.
May 26, 9:47 PM EDT	TSTM WND DMG	Sudlersville, MD	DELAYED REPORT. DOWNED UTILITY FORCED THE CLOSURE OF STATE HIGHWAY 313 BETWEEN STATE HIGHWAY 300 AND STATE HIGHWAY 544. TIME ESTIMATED FROM RADAR.
May 26, 9:58 PM EDT	TSTM WND DMG	1 W Templeville, MD	DELAYED REPORT. BLOWN DEBRIS FROM STRAIGHT-LINE THUNDERSTORM WIND GUSTS FORCED THE CLOSURE OF STATE HIGHWAY 302 AT WOODYARD ROAD. TIME ESTIMATED FROM RADAR.
May 26, 10:01 PM EDT	TSTM WND DMG	2 Ssw Hartly, DE	SEVERAL TREES REPORTED DOWN BETWEEN HARTLY AND MARYDEL.

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
May 26, 8:32 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 1.8 hours before the alert went out and 136 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: 1426 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 1326 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

As transmitted.

656 
WUUS51 KPHI 270145
SVRPHI
DEC001-MDC011-029-035-270230-
/O.NEW.KPHI.SV.W.0051.190527T0145Z-190527T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
945 PM EDT Sun May 26 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  West central Kent County in central Delaware...
  Northeastern Queen Anne's County in northeastern Maryland...
  Northeastern Caroline County in eastern Maryland...
  Northeastern Kent County in northeastern Maryland...

* Until 1030 PM EDT.

* At 945 PM EDT, a severe thunderstorm was located over Crumpton, or
  14 miles northeast of Centerville, moving southeast at 30 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...
  Chestertown, Church Hill, Millington, Sudlersville, Goldsboro,
  Hartly, Hazlettville, Morgnec, Crumpton, Sandtown, Henderson,
  Marydel, Templeville, Barclay and Kingstown.

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 3934 7596 3919 7559 3895 7570 3919 7609
TIME...MOT...LOC 0145Z 297DEG 25KT 3924 7594 

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

Iovino

1 follow-up statement

057 
WWUS51 KPHI 270205
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1005 PM EDT Sun May 26 2019

DEC001-MDC011-029-035-270230-
/O.CON.KPHI.SV.W.0051.000000T0000Z-190527T0230Z/
Kent DE-Queen Anne's MD-Caroline MD-Kent MD-
1005 PM EDT Sun May 26 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT
FOR WEST CENTRAL KENT...NORTHEASTERN QUEEN ANNE'S...NORTHEASTERN
CAROLINE AND EAST CENTRAL KENT COUNTIES...

At 1005 PM EDT, a severe thunderstorm was located over Hartly, or 12
miles west of Dover, moving southeast at 30 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...
Millington, Sudlersville, Goldsboro, Hartly, Hazlettville, Sandtown,
Henderson, Marydel, Templeville and Barclay.

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.

&&

LAT...LON 3919 7559 3895 7570 3907 7589 3929 7583
TIME...MOT...LOC 0205Z 296DEG 27KT 3916 7575 

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

Iovino

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 9:11 PM EDT	Special Weather Statement	PHI	Kent	34 min
May 26, 10:01 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's, Talbot	59 min
May 26, 8:18 PM EDT	Severe Thunderstorm Warning	PHI	Kent	27 min
May 26, 10:09 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	66 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.