Alert archive / Maryland / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 99, NWS Wakefield, VA

June 9, 2021Wicomico County, Worcester County, Maryland

NWS Wakefield, VA issued this severe thunderstorm warning at Jun 9, 2021, 4:09 PM EDT for Wicomico County, Worcester County, Maryland. It was in force for 51 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 9, 2021, 4:09 PM EDT (20:09 UTC)
Expired: Jun 9, 2021, 5:00 PM EDT
In force: 51 min
Issued by: NWS Wakefield, VA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Wicomico County, MD, Worcester County, MD

The radar

The Dover AFB radar (KDOX), 54 km from the middle of the area, began a volume at 20:11 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 nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 8.2 hours before the alert went out and 54 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: 795 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 967 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

041 
WUUS51 KAKQ 092009
SVRAKQ
MDC045-047-092100-
/O.NEW.KAKQ.SV.W.0099.210609T2009Z-210609T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wakefield VA
409 PM EDT Wed Jun 9 2021

The National Weather Service in Wakefield has issued a

* Severe Thunderstorm Warning for...
  East central Wicomico County in southeastern Maryland...
  Northeastern Worcester County in southeastern Maryland...

* Until 500 PM EDT.

* At 409 PM EDT, severe thunderstorms were located along a line
  extending from near Millville to near Selbyville to near Gumboro,
  moving southeast at 15 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Expect damage to trees and powerlines.

* Severe thunderstorms will be near,
  Ocean Pines around 420 PM EDT.
  Berlin around 425 PM EDT.
  Cape Isle Of Wight around 435 PM EDT.
  Ocean City around 445 PM EDT.

Other locations impacted by these severe thunderstorms include
Bishop, West Ocean City, Ocean City Municipality, Bishopville,
Showell, Whaleyville and Willards.

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 3838 7505 3828 7509 3837 7534 3845 7546
      3845 7505
TIME...MOT...LOC 2009Z 308DEG 12KT 3846 7508 3840 7522 3849 7546 

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

Zimmerman

3 follow-up statements

132 
WWUS51 KAKQ 092028
SVSAKQ

Severe Weather Statement
National Weather Service Wakefield VA
428 PM EDT Wed Jun 9 2021

MDC045-047-092100-
/O.CON.KAKQ.SV.W.0099.000000T0000Z-210609T2100Z/
Wicomico MD-Worcester MD-
428 PM EDT Wed Jun 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR EAST CENTRAL WICOMICO AND NORTHEASTERN WORCESTER COUNTIES...

At 427 PM EDT, severe thunderstorms were located along a line
extending from near Ocean City to Ocean Pines to near Gumboro, moving
southeast at 15 mph.

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

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and powerlines.

These severe storms will be near...
  Berlin and Ocean Pines around 435 PM EDT.
  Cape Isle Of Wight around 440 PM EDT.
  Ocean City around 445 PM EDT.

Other locations impacted by these severe thunderstorms include
Bishop, West Ocean City, Ocean City Municipality, Bishopville,
Showell, Whaleyville and Willards.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3838 7505 3828 7509 3837 7534 3845 7546
      3845 7505
TIME...MOT...LOC 2027Z 308DEG 12KT 3843 7503 3837 7517 3846 7541 

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

Zimmerman

942 
WWUS51 KAKQ 092043
SVSAKQ

Severe Weather Statement
National Weather Service Wakefield VA
443 PM EDT Wed Jun 9 2021

MDC045-092053-
/O.CAN.KAKQ.SV.W.0099.000000T0000Z-210609T2100Z/
Wicomico MD-
443 PM EDT Wed Jun 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WICOMICO COUNTY
IS CANCELLED...

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

LAT...LON 3828 7509 3835 7529 3845 7522 3845 7505
      3838 7505
TIME...MOT...LOC 2043Z 307DEG 12KT 3840 7499 3834 7513 3832 7519 

$$

MDC047-092100-
/O.CON.KAKQ.SV.W.0099.000000T0000Z-210609T2100Z/
Worcester MD-
443 PM EDT Wed Jun 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR NORTHEASTERN WORCESTER COUNTY...

At 443 PM EDT, severe thunderstorms were located along a line
extending from near Ocean City to Cape Isle Of Wight to Berlin,
moving southeast at 15 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and powerlines.

These severe thunderstorms will remain over mainly rural areas of
northeastern Worcester County, including the following locations...
Bishop, West Ocean City, Showell, Ocean City Municipality and
Bishopville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3828 7509 3835 7529 3845 7522 3845 7505
      3838 7505
TIME...MOT...LOC 2043Z 307DEG 12KT 3840 7499 3834 7513 3832 7519 

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

Zimmerman

541 
WWUS51 KAKQ 092059
SVSAKQ

Severe Weather Statement
National Weather Service Wakefield VA
459 PM EDT Wed Jun 9 2021

MDC047-092109-
/O.EXP.KAKQ.SV.W.0099.000000T0000Z-210609T2100Z/
Worcester MD-
459 PM EDT Wed Jun 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WORCESTER COUNTY
WILL EXPIRE AT 500 PM EDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However heavy rain
is still possible with these thunderstorms.

LAT...LON 3828 7509 3835 7529 3845 7522 3845 7505
      3838 7505
TIME...MOT...LOC 2059Z 308DEG 12KT 3837 7494 3831 7508 3829 7514 

$$

Zimmerman

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 8:45 PM EDT	Special Weather Statement	AKQ	Dorchester	45 min
Jun 8, 9:32 PM EDT	Special Weather Statement	AKQ	Wicomico	43 min
Jun 9, 3:49 PM EDT	Special Weather Statement	AKQ	Worcester	41 min
Jun 9, 4:52 PM EDT	Special Weather Statement	AKQ	Dorchester	53 min
Jun 9, 5:06 PM EDT	Special Weather Statement	AKQ	Worcester	39 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.