Alert archive / Maryland / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 288, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 1, 2021, 3:16 PM EDT for 4 counties in Maryland. It was in force for 44 min. 3 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
- Sep 1, 2021, 3:16 PM EDT (19:16 UTC)
- Expired
- Sep 1, 2021, 4:00 PM EDT
- In force
- 44 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 66 km from the middle of the area, began a volume at 19:15 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 |
|---|---|---|---|
| Sep 1, 3:16 PM EDT | TSTM WND DMG | 1 Ene Easton, MD | A FEW TREES DOWN BLOCKING ROADWAYS IN EASTON. TIME ESTIMATED FROM RADAR. |
| Sep 1, 3:20 PM EDT | TSTM WND DMG | 2 N Royal Oak, MD | DOWNED TREES OR WIRES CAUSED A PORTION OF MD-329 TO BE CLOSED NORTH OF STATION RD. TIME ESTIMATED FROM RADAR. |
| Sep 1, 3:22 PM EDT | TSTM WND DMG | 2 Nw Skipton, MD | TREES DOWN BLOCKING ROAD WAYS NEAR WYE MILLS. TIME ESTIMATED FROM RADAR. |
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 |
|---|---|---|---|
| Sep 1, 12:40 PM EDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 7.3 hours before the alert went out and 104 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
- 558 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 575 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 223 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.6
The text
As transmitted.
673
WUUS51 KPHI 011916
SVRPHI
MDC011-029-035-041-012000-
/O.NEW.KPHI.SV.W.0288.210901T1916Z-210901T2000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
316 PM EDT Wed Sep 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...
Caroline County in eastern Maryland...
Kent County in northeastern Maryland...
* Until 400 PM EDT.
* At 315 PM EDT, severe thunderstorms were located along a line
extending from near Bodkin Point to near Romancoke to near Oxford,
moving east at 60 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Easton, Centerville, Talbot, Chestertown, Denton, Centreville,
Romancoke, Federalsburg, Greensboro, Oakland, Ridgely, Rock Hall,
Trappe, St. Michaels, Church Hill, Preston, Oxford, Millington,
Sudlersville and Goldsboro.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM EDT for eastern and
northeastern Maryland.
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
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.
A Tornado Watch remains in effect until 1000 PM EDT for eastern and
northeastern Maryland.
&&
LAT...LON 3876 7635 3886 7626 3879 7619 3883 7619
3897 7625 3884 7637 3895 7636 3904 7631
3900 7617 3915 7628 3932 7618 3938 7577
3864 7571 3870 7590 3857 7604 3875 7629
3878 7629 3867 7634 3877 7638
TIME...MOT...LOC 1915Z 264DEG 50KT 3914 7636 3892 7633 3868 7627
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann2 follow-up statements
035
WWUS51 KPHI 011918
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
318 PM EDT Wed Sep 1 2021
MDC011-029-035-041-012000-
/O.CON.KPHI.SV.W.0288.000000T0000Z-210901T2000Z/
Talbot MD-Queen Anne's MD-Caroline MD-Kent MD-
318 PM EDT Wed Sep 1 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR TALBOT...QUEEN ANNE'S...CAROLINE AND KENT COUNTIES...
At 318 PM EDT, severe thunderstorms were located along a line
extending from near Millers Island to near Stevensville to Tilghman
Island, moving northeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Easton, Centerville, Talbot, Chestertown, Denton, Centreville,
Romancoke, Federalsburg, Greensboro, Oakland, Ridgely, Rock Hall,
Trappe, St. Michaels, Church Hill, Preston, Oxford, Millington,
Sudlersville and Goldsboro.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM EDT for eastern and
northeastern Maryland.
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3876 7635 3886 7626 3879 7619 3883 7619
3897 7625 3884 7637 3895 7636 3904 7631
3900 7617 3915 7628 3932 7618 3938 7577
3864 7571 3870 7590 3857 7604 3875 7629
3878 7629 3867 7634 3877 7638
TIME...MOT...LOC 1918Z 226DEG 34KT 3921 7639 3899 7636 3875 7630
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann527
WWUS51 KPHI 011944
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
344 PM EDT Wed Sep 1 2021
MDC041-011954-
/O.CAN.KPHI.SV.W.0288.000000T0000Z-210901T2000Z/
Talbot MD-
344 PM EDT Wed Sep 1 2021
...THE SEVERE THUNDERSTORM WARNING FOR TALBOT COUNTY IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM EDT for eastern and
northeastern Maryland.
LAT...LON 3890 7573 3891 7593 3901 7618 3915 7628
3932 7618 3938 7577
TIME...MOT...LOC 1944Z 255DEG 39KT 3926 7617 3908 7612 3893 7582
$$
MDC011-029-035-012000-
/O.CON.KPHI.SV.W.0288.000000T0000Z-210901T2000Z/
Queen Anne's MD-Caroline MD-Kent MD-
344 PM EDT Wed Sep 1 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR QUEEN ANNE'S...NORTHERN CAROLINE AND KENT COUNTIES...
At 344 PM EDT, severe thunderstorms were located along a line
extending from near Newtown to near Centreville to near Greensboro,
moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Centerville, Chestertown, Centreville, Greensboro, Oakland, Ridgely,
Rock Hall, Church Hill, Millington, Sudlersville, Goldsboro, Queen
Anne, Old Town, Starr, Jumptown, Newtown, Morgnec, Crumpton,
Sassafras and Langford.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM EDT for eastern and
northeastern Maryland.
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3890 7573 3891 7593 3901 7618 3915 7628
3932 7618 3938 7577
TIME...MOT...LOC 1944Z 255DEG 39KT 3926 7617 3908 7612 3893 7582
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 4:59 PM EDT | Tornado Warning | PHI | Caroline | 46 min |
| Sep 1, 5:01 PM EDT | Tornado Warning | PHI | Caroline, Kent, Queen Anne's | 44 min |
| Sep 1, 5:16 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 44 min |
| Sep 1, 5:36 PM EDT | Tornado Warning | PHI | Kent | 24 min |
| Sep 1, 6:57 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 63 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.