Alert archive / Maryland / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 94, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 14, 2021, 11:54 PM EDT for Caroline County, Queen Anne's County, Talbot County, Maryland; Sussex County, Delaware. It was in force for 66 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
- Jun 14, 2021, 11:54 PM EDT (03:54 UTC)
- Expired
- Jun 15, 2021, 1:00 AM EDT
- In force
- 66 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Sussex County, DE, Caroline County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 62 km from the middle of the area, began a volume at 03:56 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 |
|---|---|---|---|
| Jun 15, 12:02 AM EDT | TSTM WND DMG | 1 Wsw Easton, MD | DOWNED WIRES NEAR MAIDEN POINT COURT. TIME ESTIMATED FROM RADAR. |
| Jun 15, 12:04 AM EDT | TSTM WND DMG | Easton, MD | SEVERAL REPORTS OF POWER LINES DOWN AND NUMEROUS OUTAGES IN PORTIONS OF THE EASTON AREA. 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 |
|---|---|---|---|
| Jun 14, 7:29 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 3.9 hours before the alert went out and 110 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
- 763 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1915 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.4
The text
As transmitted.
278
WUUS51 KPHI 150354
SVRPHI
DEC005-MDC011-035-041-150500-
/O.NEW.KPHI.SV.W.0094.210615T0354Z-210615T0500Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1154 PM EDT Mon Jun 14 2021
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
West central Sussex County in southern Delaware...
Talbot County in eastern Maryland...
Southwestern Queen Anne's County in northeastern Maryland...
Southern Caroline County in eastern Maryland...
* Until 100 AM EDT.
* At 1154 PM EDT, severe thunderstorms were located along a line
extending from Griffin to Copperville to near Talbot, moving east
at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to
roofs, siding, trees, and power lines is possible.
* Locations impacted include...
Easton, Talbot, Seaford, Denton, Romancoke, Federalsburg,
Bridgeville, Trappe, St. Michaels, Preston, Oxford, Queen Anne,
Smithville, Copperville, Agner, Choptank, Windyhill, Tanyard,
Harmony and Tilghman Island.
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 3886 7634 3884 7638 3890 7636 3879 7620
3891 7624 3892 7594 3872 7537 3861 7570
3870 7590 3857 7604 3871 7623 3876 7622
3871 7628 3878 7629 3876 7632 3868 7634
TIME...MOT...LOC 0354Z 287DEG 31KT 3889 7590 3882 7614 3880 7631
HAIL...1.00IN
WIND...60MPH
$$
Staarmann3 follow-up statements
841
WWUS51 KPHI 150424
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1224 AM EDT Tue Jun 15 2021
MDC035-150434-
/O.CAN.KPHI.SV.W.0094.000000T0000Z-210615T0500Z/
Queen Anne's MD-
1224 AM EDT Tue Jun 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN QUEEN ANNE'S
COUNTY IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 200 AM EDT for
central and southern Delaware...and eastern Maryland.
LAT...LON 3865 7615 3875 7602 3889 7585 3872 7537
3861 7570 3870 7590 3857 7604
TIME...MOT...LOC 0424Z 290DEG 31KT 3882 7580 3871 7585 3863 7603
$$
DEC005-MDC011-041-150500-
/O.CON.KPHI.SV.W.0094.000000T0000Z-210615T0500Z/
Sussex DE-Talbot MD-Caroline MD-
1224 AM EDT Tue Jun 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM EDT
FOR WEST CENTRAL SUSSEX...SOUTHEASTERN TALBOT AND SOUTHERN CAROLINE
COUNTIES...
At 1224 AM EDT, severe thunderstorms were located along a line
extending from near Agner to near Preston to near Trappe, moving east
at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Seaford, Denton, Federalsburg, Bridgeville, Trappe, Preston, Tanyard,
Harmony, Smithville, Agner, Choptank, Hambleton and Windyhill.
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 3865 7615 3875 7602 3889 7585 3872 7537
3861 7570 3870 7590 3857 7604
TIME...MOT...LOC 0424Z 290DEG 31KT 3882 7580 3871 7585 3863 7603
HAIL...1.00IN
WIND...60MPH
$$
Staarmann774
WWUS51 KPHI 150444
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1244 AM EDT Tue Jun 15 2021
MDC011-041-150454-
/O.CAN.KPHI.SV.W.0094.000000T0000Z-210615T0500Z/
Talbot MD-Caroline MD-
1244 AM EDT Tue Jun 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TALBOT AND
SOUTHERN CAROLINE COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 200 AM EDT for
southern Delaware...and eastern Maryland.
LAT...LON 3867 7571 3881 7562 3872 7537 3861 7570
3861 7571
TIME...MOT...LOC 0444Z 280DEG 33KT 3877 7552 3867 7561
$$
DEC005-150500-
/O.CON.KPHI.SV.W.0094.000000T0000Z-210615T0500Z/
Sussex DE-
1244 AM EDT Tue Jun 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM EDT
FOR WEST CENTRAL SUSSEX COUNTY...
At 1244 AM EDT, severe thunderstorms were located along a line
extending from near Bridgeville to Seaford, moving east 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...
Seaford and Bridgeville.
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 3867 7571 3881 7562 3872 7537 3861 7570
3861 7571
TIME...MOT...LOC 0444Z 280DEG 33KT 3877 7552 3867 7561
HAIL...<.75IN
WIND...60MPH
$$
Staarmann465
WWUS51 KPHI 150453
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1253 AM EDT Tue Jun 15 2021
DEC005-150503-
/O.EXP.KPHI.SV.W.0094.000000T0000Z-210615T0500Z/
Sussex DE-
1253 AM EDT Tue Jun 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL SUSSEX COUNTY
WILL EXPIRE AT 100 AM EDT...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire. However gusty winds and heavy rain are still
possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 200 AM EDT for
southern Delaware...and eastern Maryland.
LAT...LON 3867 7571 3881 7562 3872 7537 3861 7570
3861 7571
TIME...MOT...LOC 0453Z 287DEG 31KT 3875 7544 3865 7553
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 10:23 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 67 min |
| Jun 14, 10:55 PM EDT | Areal Flood Advisory | PHI | Kent, Queen Anne's | 2 hr |
| Jun 14, 11:03 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 57 min |
| Jun 14, 11:12 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 63 min |
| Jun 14, 11:39 PM EDT | Areal Flood Advisory | PHI | Caroline, Kent, Queen Anne's | 85 min |
| Jun 14, 11:42 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 63 min |
| Jun 14, 11:51 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 54 min |
| Jun 14, 8:55 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 50 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2021Severe Thunderstorm Warnings in Delaware, 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.