Alert archive / Maryland / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 72, NWS Wakefield, VA

May 4, 2021Dorchester County, Maryland

NWS Wakefield, VA issued this severe thunderstorm warning at May 4, 2021, 6:32 PM EDT for Dorchester County, Maryland. It was in force for 43 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: May 4, 2021, 6:32 PM EDT (22:32 UTC)
Expired: May 4, 2021, 7:15 PM EDT
In force: 43 min
Issued by: NWS Wakefield, VA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Dorchester County, MD

The radar

The Dover AFB radar (KDOX), 71 km from the middle of the area, began a volume at 22:32 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 4, 6:48 PM EDT	TSTM WND DMG	4 Nne Honga, MD	NUMEROUS POWER OUTAGES REPORTED BY CHOPTANK ELECTRIC COOPERATIVE.
May 4, 6:59 PM EDT	TSTM WND DMG	1 Wsw Linkwood, MD	NUMEROUS POWER OUTAGES REPORTED BY CHOPTANK ELECTRIC COOPERATIVE.

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

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.5 hours before the alert went out and 82 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: 60 J/kg
Mixed-layer CIN: -270 J/kg
Mixed-layer LCL: 1140 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

392 
WUUS51 KAKQ 042232
SVRAKQ
MDC019-042315-
/O.NEW.KAKQ.SV.W.0072.210504T2232Z-210504T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wakefield VA
632 PM EDT Tue May 4 2021

The National Weather Service in Wakefield has issued a

* Severe Thunderstorm Warning for...
  Dorchester County in southeastern Maryland...

* Until 715 PM EDT.

* At 631 PM EDT, severe thunderstorms were located along a line
  extending from near Chesapeake Beach to Flag Harbor to Patuxent
  River Naval Air Station, moving east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to trees and powerlines.

* Severe thunderstorms will be near,
  Taylors Island around 645 PM EDT.
  University Of Maryland Center For Environmental Studies around 655 
  PM EDT.
  Cambridge around 700 PM EDT.
  Hurlock, Secretary and Vienna around 715 PM EDT.

Other locations impacted by these severe thunderstorms include
Madison, Taylors Island, Woolford, Andrews, Hudson, East New Market,
Church Creek, Bucktown, Wingate and Linkwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Please report severe weather by calling 757-899-2415, posting to the
NWS Wakefield Facebook page, or using Twitter @NWSWAKEFIELDVA.

&&

LAT...LON 3870 7581 3843 7582 3823 7597 3837 7597
      3837 7600 3831 7606 3822 7603 3830 7611
      3832 7620 3833 7620 3832 7616 3839 7623
      3831 7624 3848 7634 3853 7620 3854 7628
      3863 7629 3857 7603 3868 7594
TIME...MOT...LOC 2231Z 267DEG 40KT 3866 7655 3847 7645 3829 7643 

HAIL...<.75IN
WIND...60MPH
 
$$

Zimmerman

1 follow-up statement

855 
WWUS51 KAKQ 042300
SVSAKQ

Severe Weather Statement
National Weather Service Wakefield VA
700 PM EDT Tue May 4 2021

MDC019-042315-
/O.CON.KAKQ.SV.W.0072.000000T0000Z-210504T2315Z/
Dorchester MD-
700 PM EDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR DORCHESTER COUNTY...

At 700 PM EDT, severe thunderstorms were located along a line
extending from Trappe to near Secretary to 10 miles northwest of Deal
Island, moving east at 55 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and powerlines.

These severe storms will be near...
  Secretary around 705 PM EDT.
  Hurlock and Vienna around 710 PM EDT.

Other locations impacted by these severe thunderstorms include
Madison, Taylors Island, Woolford, Andrews, Hudson, East New Market,
Church Creek, Bucktown, Wingate and Linkwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3870 7581 3843 7582 3823 7597 3837 7597
      3837 7600 3831 7606 3822 7603 3830 7611
      3832 7620 3833 7620 3832 7616 3839 7623
      3831 7624 3848 7634 3853 7620 3854 7628
      3863 7629 3857 7603 3868 7594
TIME...MOT...LOC 2300Z 259DEG 49KT 3867 7607 3853 7598 3829 7604 

HAIL...<.75IN
WIND...60MPH
 
$$

Zimmerman

The office that day

Everything else NWS Wakefield, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 4, 7:07 PM EDT	Severe Thunderstorm Warning	AKQ	Dorchester, Somerset, Wicomico	38 min
May 4, 7:38 PM EDT	Severe Thunderstorm Warning	AKQ	Somerset, Wicomico, Worcester	67 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.