Alert archive / Maryland / Special Weather Statements in 2018
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Jun 10, 2018, 3:50 PM EDT for Caroline County, Maryland. It was in force for 40 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 10, 2018, 3:50 PM EDT (19:50 UTC)
- Expired
- Jun 10, 2018, 4:30 PM EDT
- In force
- 40 min
- Issued by
- NWS Philadelphia/Mount Holly
County Caroline County, MD
The radar
The Dover AFB radar (KDOX), 37 km from the middle of the area, began a volume at 19:53 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 12:00Z, 7.8 hours before the alert went out and 101 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
- 61 J/kg
- Mixed-layer CIN
- -100 J/kg
- Mixed-layer LCL
- 675 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
770
WWUS81 KPHI 101950
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
350 PM EDT SUN JUN 10 2018
DEZ002-003-MDZ019-020-102030-
Inland Sussex-Kent-Talbot-Caroline-
350 PM EDT SUN JUN 10 2018
...A THUNDERSTORM WITH TORRENTIAL DOWNPOURS WILL AFFECT NORTHWEST
SUSSEX AND SOUTHWESTERN KENT COUNTIES IN DELAWARE...AND NORTHEASTERN
TALBOT AND CAROLINE COUNTIES IN MARYLAND...
At 347 PM EDT, a thunderstorm was located over Harmony, or 8 miles
east of Easton, moving northeast at 10 mph. Torrential downpours
with rainfall rates of one inch in 30 minutes will occur with this
storm, and may cause localized flooding. Do not drive your vehicle
through flooded roadways.
Locations impacted include...
Easton, Denton, Harrington, Bridgeville, Preston, Tanyard, Harmony,
Smithville, Agner, Matthews, Choptank, Griffin, Windyhill, Cordova,
Andrewsville, Greenwood and Farmington.
Cloud to ground lightning is also occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
LAT...LON 3882 7606 3890 7598 3898 7567 3891 7555
3874 7553 3869 7580 3871 7584 3870 7590
3869 7590 3868 7593 3867 7595 3866 7599
TIME...MOT...LOC 1947Z 246DEG 14KT 3878 7592
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 3:48 AM EDT | Flash Flood Watch | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more | 28 hr |
| Jun 10, 4:01 AM EDT | Small Craft Advisory | PHI | 50 hr | |
| Jun 10, 7:38 PM EDT | Special Weather Statement | PHI | Ocean | 52 min |
| Jun 10, 4:45 PM EDT | Special Weather Statement | PHI | Sussex | 30 min |
| Jun 10, 5:00 PM EDT | Flash Flood Warning | PHI | Sussex | 108 min |
| Jun 10, 6:45 PM EDT | Areal Flood Advisory | PHI | Kent | 3 hr |
| Jun 10, 7:45 PM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's, Talbot | 60 min |
Nearby
Special Weather Statements in Maryland, 2018Every special weather statement 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.