Alert archive / Maryland / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 41, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 24, 2018, 8:30 PM EDT for 4 counties in Maryland; Kent County, Sussex County, Delaware. It was in force for 45 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
- Jun 24, 2018, 8:30 PM EDT (00:30 UTC)
- Expired
- Jun 24, 2018, 9:15 PM EDT
- In force
- 45 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, Sussex County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 37 km from the middle of the area, began a volume at 00:32 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
Wallops Is Stn, VA (KWAL), launched 00:00Z, 0.5 hours before the alert went out and 107 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
- 305 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 1083 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
438
WUUS51 KPHI 250030
SVRPHI
DEC001-005-MDC011-029-035-041-250115-
/O.NEW.KPHI.SV.W.0041.180625T0030Z-180625T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
830 PM EDT SUN JUN 24 2018
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northwestern Sussex County in southern Delaware...
Kent County in central Delaware...
Talbot County in eastern Maryland...
Eastern Queen Anne's County in northeastern Maryland...
Caroline County in eastern Maryland...
Northeastern Kent County in northeastern Maryland...
* Until 915 PM EDT.
* At 829 PM EDT, severe thunderstorms were located along a line
extending from near Millington to near Goldsboro to Oakland to
Copperville, moving southeast 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...
Dover, Easton, Talbot, Milford, Seaford, Denton, Harrington,
Camden, Federalsburg, Milton, Bridgeville, Greensboro, Oakland,
Ridgely, Trappe, St. Michaels, Preston, Millington, Ellendale and
Bowers.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3886 7626 3883 7625 3879 7620 3890 7620
3901 7596 3913 7583 3933 7586 3907 7537
3896 7530 3879 7531 3870 7543 3859 7570
3865 7571 3869 7577 3868 7580 3871 7584
3868 7593 3863 7598 3861 7598 3882 7631
TIME...MOT...LOC 0029Z 304DEG 34KT 3922 7578 3910 7576 3897 7589 3884
7620
HAIL...<.75IN
WIND...60MPH
$$
MPS2 follow-up statements
016
WWUS51 KPHI 250052
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
852 PM EDT SUN JUN 24 2018
MDC029-250101-
/O.CAN.KPHI.SV.W.0041.000000T0000Z-180625T0115Z/
Kent MD-
852 PM EDT SUN JUN 24 2018
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN KENT COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3885 7627 3878 7621 3879 7619 3890 7620
3895 7589 3914 7573 3907 7537 3896 7530
3879 7531 3870 7543 3859 7570 3865 7571
3871 7584 3868 7594 3863 7598 3861 7598
3882 7631 3883 7630
TIME...MOT...LOC 0051Z 275DEG 26KT 3918 7562 3909 7562 3893 7574 3877
7617
$$
DEC001-005-MDC011-035-041-250115-
/O.CON.KPHI.SV.W.0041.000000T0000Z-180625T0115Z/
Sussex DE-Kent DE-Talbot MD-Queen Anne's MD-Caroline MD-
852 PM EDT SUN JUN 24 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR NORTHWESTERN SUSSEX...SOUTHERN KENT...TALBOT...SOUTH CENTRAL
QUEEN ANNE'S AND CAROLINE COUNTIES...
At 851 PM EDT, severe thunderstorms were located along a line
extending from near Cheswold to near Hazlettville to near Greensboro
to near St. Michaels, moving east at 30 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, Milford, Seaford, Denton, Harrington, Camden,
Federalsburg, Milton, Bridgeville, Greensboro, Ridgely, Trappe, St.
Michaels, Preston, Ellendale, Bowers, Goldsboro, Queen Anne and
Woodside.
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 3885 7627 3878 7621 3879 7619 3890 7620
3895 7589 3914 7573 3907 7537 3896 7530
3879 7531 3870 7543 3859 7570 3865 7571
3871 7584 3868 7594 3863 7598 3861 7598
3882 7631 3883 7630
TIME...MOT...LOC 0051Z 275DEG 26KT 3918 7562 3909 7562 3893 7574 3877
7617
HAIL...<.75IN
WIND...60MPH
$$
MPS221
WWUS51 KPHI 250106
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
906 PM EDT SUN JUN 24 2018
DEC001-005-MDC011-035-041-250115-
/O.EXP.KPHI.SV.W.0041.000000T0000Z-180625T0115Z/
Sussex DE-Kent DE-Talbot MD-Queen Anne's MD-Caroline MD-
906 PM EDT SUN JUN 24 2018
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN SUSSEX...SOUTHERN
KENT...TALBOT...SOUTH CENTRAL QUEEN ANNE'S AND CAROLINE COUNTIES WILL
EXPIRE AT 915 PM EDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with these thunderstorms.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
in Mount Holly NJ.
LAT...LON 3885 7627 3878 7621 3879 7619 3890 7620
3895 7589 3914 7573 3907 7537 3896 7530
3879 7531 3870 7543 3859 7570 3865 7571
3871 7584 3868 7594 3863 7598 3861 7598
3882 7631 3883 7630
TIME...MOT...LOC 0105Z 304DEG 34KT 3911 7549 3902 7549 3886 7561 3870
7604
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 8:05 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's | 25 min |
| Jun 24, 8:22 PM EDT | Special Weather Statement | PHI | Caroline | 23 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2018Severe Thunderstorm Warnings in Delaware, 2018Every severe thunderstorm warning in 2018
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.