Alert archive / Maryland / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 108, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 1, 2021, 3:56 PM EDT for 4 counties in Maryland. It was in force for 49 min. 8 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, 3:56 PM EDT (19:56 UTC)
- Expired
- Jul 1, 2021, 4:45 PM EDT
- In force
- 49 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.88 in
- Wind
- 70.0 mph
Counties Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 69 km from the middle of the area, began a volume at 19:57 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, 4:00 PM EDT | MARINE TSTM WIND 48 | 11 Ese Shady Side, MD | |
| Jul 1, 4:00 PM EDT | TSTM WND DMG | 2 Ssw Stevensville, MD | TREES AND UTILITY WIRES DOWN WITH DEBRIS ON THE ROADWAY ALONG MARYLAND ROUTE 8 SOUTH OF KENT MANOR DRIVE. |
| Jul 1, 4:00 PM EDT | TSTM WND DMG | 2 Ssw Stevensville, MD | TREES AND UTILITY WIRES DOWN WITH DEBRIS ON THE ROADWAY ALONG MARYLAND ROUTE 8 SOUTH OF KENT MANOR DRIVE. |
| Jul 1, 4:16 PM EDT | TSTM WND DMG | 2 S Skipton, MD | MULTIPLE TREES AND WIRES DOWN IN WYE MILLS AND BETWEEN WYE MILLS AND EASTON. TIME ESTIMATED FROM RADAR. |
| Jul 1, 4:24 PM EDT | TSTM WND DMG | Centreville, MD | SEVERAL REPORTS OF WIRES DOWN NEAR CENTREVILLE. TIME ESTIMATED FROM RADAR. |
| Jul 1, 4:24 PM EDT | TSTM WND DMG | Centreville, MD | SEVERAL REPORTS OF WIRES DOWN NEAR CENTREVILLE. TIME ESTIMATED FROM RADAR. |
| Jul 1, 4:35 PM EDT | TSTM WND DMG | 2 Sw Starkey Corner, MD | TREES AND UTILITY WIRES DOWN WITH DEBRIS ON THE ROADWAY ALONG MARYLAND ROUTE 213 NEAR HATCHETT ROAD. |
| Jul 1, 4:35 PM EDT | TSTM WND DMG | 2 Sw Starkey Corner, MD | TREES AND UTILITY WIRES DOWN WITH DEBRIS ON THE ROADWAY ALONG MARYLAND ROUTE 213 NEAR HATCHETT ROAD. |
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 |
|---|---|---|---|
| Jul 1, 12:46 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 7.9 hours before the alert went out and 102 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.
- Mixed-layer CAPE
- 604 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 928 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.2
The text
As transmitted.
711
WUUS51 KPHI 011956
SVRPHI
MDC011-029-035-041-012045-
/O.NEW.KPHI.SV.W.0108.210701T1956Z-210701T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
356 PM EDT Thu Jul 1 2021
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Talbot County in eastern Maryland...
Queen Anne's County in northeastern Maryland...
Southwestern Caroline County in eastern Maryland...
Western Kent County in northeastern Maryland...
* Until 445 PM EDT.
* At 356 PM EDT, a severe thunderstorm was located over Severn River,
moving east at 35 mph.
HAZARD...70 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Locations impacted include...
Easton, Centerville, Talbot, Chestertown, Centreville, Romancoke,
Ridgely, Rock Hall, St. Michaels, Church Hill, Queen Anne, Old
Town, Grasonville, Starr, Copperville, Jumptown, Morgnec, Tanyard,
Harmony and Stevensville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3895 7636 3903 7632 3900 7617 3901 7620
3902 7621 3915 7628 3926 7622 3934 7606
3911 7589 3872 7586 3876 7633 3877 7633
3886 7626 3879 7620 3879 7619 3897 7625
3884 7637 3884 7638
TIME...MOT...LOC 1956Z 250DEG 32KT 3900 7646
TORNADO...POSSIBLE
HAIL...0.88IN
WIND...70MPH
$$
Davis2 follow-up statements
185
WWUS51 KPHI 012033
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
433 PM EDT Thu Jul 1 2021
MDC011-029-035-041-012045-
/O.CON.KPHI.SV.W.0108.000000T0000Z-210701T2045Z/
Talbot MD-Queen Anne's MD-Caroline MD-Kent MD-
433 PM EDT Thu Jul 1 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR NORTHEASTERN TALBOT...CENTRAL QUEEN ANNE'S...SOUTHWESTERN
CAROLINE AND WESTERN KENT COUNTIES...
At 432 PM EDT, a severe thunderstorm was located over Old Town, or
near Centerville, moving east at 35 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Public reports of trees and wires down in Queen Anne's
County.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Easton, Centerville, Chestertown, Centreville, Ridgely, Rock Hall,
Church Hill, Queen Anne, Old Town, Starr, Jumptown, Morgnec, Tanyard,
Harmony, Skipton, Langford, Matthews, Overton, Starkey Corner and Wye
Mills.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3900 7617 3901 7620 3902 7621 3915 7628
3926 7622 3934 7606 3911 7589 3872 7586
3874 7615 3877 7614 3885 7614 3890 7612
3895 7612
TIME...MOT...LOC 2032Z 250DEG 32KT 3911 7607
TORNADO...POSSIBLE
HAIL...0.88IN
WIND...60MPH
$$
Davis942
WWUS51 KPHI 012044
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
444 PM EDT Thu Jul 1 2021
MDC011-029-035-041-012053-
/O.EXP.KPHI.SV.W.0108.000000T0000Z-210701T2045Z/
Talbot MD-Queen Anne's MD-Caroline MD-Kent MD-
444 PM EDT Thu Jul 1 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN TALBOT...CENTRAL
QUEEN ANNE'S...SOUTHWESTERN CAROLINE AND WESTERN KENT COUNTIES WILL
EXPIRE AT 445 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
eastern and northeastern Maryland.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 3900 7617 3901 7620 3902 7621 3915 7628
3926 7622 3934 7606 3911 7589 3872 7586
3874 7615 3877 7614 3885 7614 3890 7612
3895 7612
TIME...MOT...LOC 2043Z 250DEG 32KT 3914 7595
$$
CMSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 3:12 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's, Talbot | 48 min |
| Jul 1, 4:08 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 52 min |
| Jul 1, 4:08 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's | 52 min |
| Jul 1, 4:10 PM EDT | Areal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 94 min |
| Jul 1, 4:32 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 43 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2021Every 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.