Alert archive / Maryland / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 158, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 9, 2021, 5:26 PM EDT for Caroline County, Queen Anne's County, Talbot County, Maryland. It was in force for 49 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
- Jul 9, 2021, 5:26 PM EDT (21:26 UTC)
- Expired
- Jul 9, 2021, 6:15 PM EDT
- In force
- 49 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Caroline 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 21:25 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 9.4 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 862 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
858
WUUS51 KPHI 092126
SVRPHI
MDC011-035-041-092215-
/O.NEW.KPHI.SV.W.0158.210709T2126Z-210709T2215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
526 PM EDT Fri Jul 9 2021
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Talbot County in eastern Maryland...
Southwestern Queen Anne's County in northeastern Maryland...
Southwestern Caroline County in eastern Maryland...
* Until 615 PM EDT.
* At 526 PM EDT, a severe thunderstorm was located near South River,
moving east at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Easton, Talbot, Romancoke, Oakland, Ridgely, Trappe, St. Michaels,
Preston, Oxford, Queen Anne, Grasonville, Starr, Copperville,
Jumptown, Choptank, Windyhill, Tanyard, Harmony, Tilghman Island
and Skipton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3886 7626 3879 7620 3879 7619 3897 7625
3884 7637 3884 7638 3895 7636 3899 7634
3902 7588 3877 7585 3859 7601 3868 7621
3876 7622 3871 7628 3878 7629 3876 7632
3870 7633 3870 7635 3877 7638
TIME...MOT...LOC 2126Z 271DEG 18KT 3888 7644
HAIL...<.75IN
WIND...60MPH
$$
NC2 follow-up statements
743
WWUS51 KPHI 092149
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
549 PM EDT Fri Jul 9 2021
MDC011-035-041-092215-
/O.CON.KPHI.SV.W.0158.000000T0000Z-210709T2215Z/
Talbot MD-Queen Anne's MD-Caroline MD-
549 PM EDT Fri Jul 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR TALBOT...SOUTH CENTRAL QUEEN ANNE'S AND SOUTHWESTERN CAROLINE
COUNTIES...
At 548 PM EDT, a severe thunderstorm was located over Romancoke, or
11 miles east of South River, moving east at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Easton, Talbot, Trappe, St. Michaels, Preston, Oxford, Queen Anne,
Tanyard, Harmony, Skipton, Copperville, Matthews, Choptank,
Hambleton, Griffin, Windyhill and Cordova.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3886 7626 3884 7626 3879 7620 3886 7620
3889 7610 3892 7607 3892 7595 3877 7585
3859 7601 3866 7616 3869 7618 3868 7621
3874 7621 3877 7624 3871 7628 3878 7629
3874 7632 3872 7634
TIME...MOT...LOC 2148Z 271DEG 18KT 3888 7629
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
NC816
WWUS51 KPHI 092205
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
605 PM EDT Fri Jul 9 2021
MDC011-035-041-092215-
/O.EXP.KPHI.SV.W.0158.000000T0000Z-210709T2215Z/
Talbot MD-Queen Anne's MD-Caroline MD-
605 PM EDT Fri Jul 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR TALBOT...SOUTH CENTRAL QUEEN
ANNE'S AND SOUTHWESTERN CAROLINE COUNTIES WILL EXPIRE AT 615 PM
EDT...
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 will be allowed to expire.
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 3886 7626 3884 7626 3879 7620 3886 7620
3889 7610 3892 7607 3892 7595 3877 7585
3859 7601 3866 7616 3869 7618 3868 7621
3874 7621 3877 7624 3871 7628 3878 7629
3874 7632 3872 7634
TIME...MOT...LOC 2205Z 271DEG 18KT 3975 7577
$$
NCThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 10:19 PM EDT | Areal Flood Advisory | PHI | Caroline, Talbot | 5 hr |
| Jul 9, 4:52 PM EDT | Special Weather Statement | PHI | Queen Anne's, Talbot | 53 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.