Alert archive / Maryland / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 90, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 14, 2021, 11:12 PM EDT for Caroline County, Kent County, Queen Anne's County, Maryland; Kent County, Delaware. It was in force for 63 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, 11:12 PM EDT (03:12 UTC)
- Expired
- Jun 15, 2021, 12:15 AM EDT
- In force
- 63 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Kent County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 56 km from the middle of the area, began a volume at 03:13 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 14, 11:13 PM EDT | TSTM WND DMG | 1 Ssw Worton, MD | SEVERAL REPORTS OF POWER LINES DOWN AND WIDESPREAD POWER OUTAGES IN THE WORTON AREA. TIME ESTIMATED FROM RADAR. |
| Jun 14, 11:13 PM EDT | TSTM WND DMG | 1 W Old Town, MD | DOWNED TREE LIMBS ON STATE HIGHWAY 289 NEAR JOHNSONTOWN ROAD. 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, 3.2 hours before the alert went out and 119 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.
379
WUUS51 KPHI 150312
SVRPHI
DEC001-MDC011-029-035-150415-
/O.NEW.KPHI.SV.W.0090.210615T0312Z-210615T0415Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1112 PM EDT Mon Jun 14 2021
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southwestern Kent County in central Delaware...
Queen Anne's County in northeastern Maryland...
Northern Caroline County in eastern Maryland...
Central Kent County in northeastern Maryland...
* Until 1215 AM EDT.
* At 1112 PM EDT, severe thunderstorms were located along a line
extending from near Chestertown to near Old Town to Overton, moving
east at 25 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
* Locations impacted include...
Dover, Centerville, Chestertown, Denton, Centreville, Camden,
Greensboro, Oakland, Ridgely, Cheswold, Church Hill, Millington,
Sudlersville, Goldsboro, Queen Anne, Woodside, Viola, Hartly, Old
Town and Starr.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.
In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with these storms. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3908 7623 3913 7616 3929 7610 3922 7552
3896 7559 3883 7572 3891 7595 3892 7595
3899 7617 3900 7617 3901 7619 3901 7621
3903 7624
TIME...MOT...LOC 0312Z 290DEG 22KT 3920 7604 3911 7608 3901 7620
HAIL...1.00IN
WIND...70MPH
$$
Staarmann3 follow-up statements
969
WWUS51 KPHI 150334
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1134 PM EDT Mon Jun 14 2021
DEC001-MDC011-029-035-150415-
/O.CON.KPHI.SV.W.0090.000000T0000Z-210615T0415Z/
Kent DE-Queen Anne's MD-Caroline MD-Kent MD-
1134 PM EDT Mon Jun 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
FOR SOUTHWESTERN KENT...QUEEN ANNE'S...NORTHERN CAROLINE AND EAST
CENTRAL KENT COUNTIES...
At 1134 PM EDT, severe thunderstorms were located along a line
extending from Sudlersville to near Hope to Queen Anne, moving east
at 25 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Dover, Centerville, Denton, Centreville, Camden, Greensboro, Oakland,
Ridgely, Cheswold, Church Hill, Millington, Sudlersville, Goldsboro,
Queen Anne, Woodside, Viola, Hartly, Starr, Jumptown and
Hazlettville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should seek shelter inside a well-built structure and away from
windows.
Frequent cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3915 7606 3928 7603 3922 7552 3896 7559
3883 7572 3891 7595 3892 7595 3899 7617
3900 7617
TIME...MOT...LOC 0334Z 289DEG 23KT 3918 7585 3906 7590 3894 7596
HAIL...1.00IN
WIND...70MPH
$$
Staarmann646
WWUS51 KPHI 150346
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1146 PM EDT Mon Jun 14 2021
MDC029-150356-
/O.CAN.KPHI.SV.W.0090.000000T0000Z-210615T0415Z/
Kent MD-
1146 PM EDT Mon Jun 14 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL KENT 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 and northeastern
Maryland.
LAT...LON 3912 7595 3925 7592 3925 7588 3926 7586
3924 7580 3925 7574 3922 7552 3896 7559
3883 7572 3899 7617
TIME...MOT...LOC 0346Z 288DEG 23KT 3914 7571 3904 7580 3892 7589
$$
DEC001-MDC011-035-150415-
/O.CON.KPHI.SV.W.0090.000000T0000Z-210615T0415Z/
Kent DE-Queen Anne's MD-Caroline MD-
1146 PM EDT Mon Jun 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
FOR SOUTHWESTERN KENT...EASTERN QUEEN ANNE'S AND NORTHERN CAROLINE
COUNTIES...
At 1146 PM EDT, severe thunderstorms were located along a line
extending from Hartly to Goldsboro to Ridgely, moving east at 25 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Dover, Centerville, Denton, Centreville, Camden, Greensboro, Oakland,
Ridgely, Cheswold, Millington, Sudlersville, Goldsboro, Queen Anne,
Woodside, Viola, Hartly, Starr, Jumptown, Hazlettville and Crumpton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should seek shelter inside a well-built structure and away from
windows.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3912 7595 3925 7592 3925 7588 3926 7586
3924 7580 3925 7574 3922 7552 3896 7559
3883 7572 3899 7617
TIME...MOT...LOC 0346Z 288DEG 23KT 3914 7571 3904 7580 3892 7589
HAIL...1.00IN
WIND...70MPH
$$
Staarmann580
WWUS51 KPHI 150400
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1200 AM EDT Tue Jun 15 2021
MDC035-150409-
/O.CAN.KPHI.SV.W.0090.000000T0000Z-210615T0415Z/
Queen Anne's MD-
1200 AM EDT Tue Jun 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN 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 and northeastern
Maryland.
LAT...LON 3914 7575 3925 7575 3925 7574 3922 7552
3896 7559 3883 7572 3892 7595 3898 7593
TIME...MOT...LOC 0359Z 288DEG 23KT 3914 7561 3901 7567 3889 7579
$$
DEC001-MDC011-150415-
/O.CON.KPHI.SV.W.0090.000000T0000Z-210615T0415Z/
Kent DE-Caroline MD-
1200 AM EDT Tue Jun 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
FOR SOUTHWESTERN KENT AND NORTHEASTERN CAROLINE COUNTIES...
At 1159 PM EDT, severe thunderstorms were located along a line
extending from near Hazlettville to near Sandtown to Denton, moving
east at 25 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Dover, Denton, Camden, Greensboro, Oakland, Ridgely, Cheswold,
Goldsboro, Woodside, Viola, Hartly, Jumptown, Hazlettville, Sandtown,
Dover Speedway, Wyoming, Felton, Kenton, Hillsboro and Henderson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should seek shelter inside a well-built structure and away from
windows.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3914 7575 3925 7575 3925 7574 3922 7552
3896 7559 3883 7572 3892 7595 3898 7593
TIME...MOT...LOC 0359Z 288DEG 23KT 3914 7561 3901 7567 3889 7579
HAIL...1.00IN
WIND...70MPH
$$
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, 11:39 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, 11:54 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 66 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.