Alert archive / Maryland / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 117, NWS Philadelphia/Mount Holly

July 1, 2021Kent County, Queen Anne's County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 1, 2021, 10:35 PM EDT for Kent County, Queen Anne's County, Maryland. It was in force for 21 min. 2 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: Jul 1, 2021, 10:35 PM EDT (02:35 UTC)
Expired: Jul 1, 2021, 10:56 PM EDT
In force: 21 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

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

The radar

The Dover AFB radar (KDOX), 62 km from the middle of the area, began a volume at 02:35 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
Jul 1, 10:45 PM EDT	TSTM WND GST 50	1 Ne Kingstown, MD	MEASURED BY A TEMPEST WEATHER STATION NEAR JUSTIN BUCH DR.
Jul 1, 10:50 PM EDT	TSTM WND DMG	1 W Sudlersville, MD	MULTIPLE TREES WERE REPORTED DOWN NEAR SUDLERSVILLE. TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 2.6 hours before the alert went out and 129 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: 249 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 1099 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.7

Open this sounding in Storm Lab

The text

As transmitted.

262 
WUUS51 KPHI 020235
SVRPHI
MDC029-035-020315-
/O.NEW.KPHI.SV.W.0117.210702T0235Z-210702T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1035 PM EDT Thu Jul 1 2021

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northeastern Queen Anne's County in northeastern Maryland...
  Central Kent County in northeastern Maryland...

* Until 1115 PM EDT.

* At 1035 PM EDT, a severe thunderstorm was located over Chestertown,
  or 12 miles north of Centerville, moving southeast at 20 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...
  Chestertown, Church Hill, Millington, Sudlersville, Morgnec,
  Crumpton, Langford, Barclay and Kingstown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3930 7614 3928 7576 3927 7575 3912 7581
      3910 7584 3918 7618
TIME...MOT...LOC 0235Z 292DEG 19KT 3922 7607 

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

JEO

2 follow-up statements

941 
WWUS51 KPHI 020246
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1046 PM EDT Thu Jul 1 2021

MDC029-035-020315-
/O.CON.KPHI.SV.W.0117.000000T0000Z-210702T0315Z/
Queen Anne's MD-Kent MD-
1046 PM EDT Thu Jul 1 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR NORTHEASTERN QUEEN ANNE'S AND EAST CENTRAL KENT COUNTIES...

At 1046 PM EDT, a severe thunderstorm was located near Morgnec, or 11
miles north of Centerville, moving east at 20 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...
Church Hill, Millington, Sudlersville, Morgnec, Crumpton, Barclay and
Kingstown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3928 7576 3927 7575 3912 7581 3910 7584
      3916 7608 3922 7604 3929 7604
TIME...MOT...LOC 0246Z 292DEG 19KT 3920 7600 

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

JEO

787 
WWUS51 KPHI 020256
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1056 PM EDT Thu Jul 1 2021

MDC029-035-020306-
/O.CAN.KPHI.SV.W.0117.000000T0000Z-210702T0315Z/
Queen Anne's MD-Kent MD-
1056 PM EDT Thu Jul 1 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN QUEEN ANNE'S AND
EAST CENTRAL KENT COUNTIES IS CANCELLED...
                
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 has been cancelled.  However gusty winds are
still possible with this thunderstorm.

LAT...LON 3928 7576 3927 7575 3912 7581 3910 7584
      3916 7608 3922 7604 3929 7604
TIME...MOT...LOC 0254Z 292DEG 19KT 3918 7593 

$$

JEO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 9:38 PM EDT	Special Weather Statement	PHI	Queen Anne's, Talbot	67 min
Jul 1, 10:07 PM EDT	Special Weather Statement	PHI	Kent	38 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2021 Every severe thunderstorm warning in 2021

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.