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 Mar 30, 2018, 1:40 PM EDT for Salem County, New Jersey; Kent County, New Castle County, Delaware; Cecil County, Kent County, Queen Anne's County, Maryland. It was in force for 50 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
- Mar 30, 2018, 1:40 PM EDT (17:40 UTC)
- Expired
- Mar 30, 2018, 2:30 PM EDT
- In force
- 50 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Kent County, DE, New Castle County, DE, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Salem County, NJ
The radar
The Dover AFB radar (KDOX), 65 km from the middle of the area, began a volume at 17:42 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 5.7 hours before the alert went out and 125 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
- 3 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 935 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 212 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
937
WWUS81 KPHI 301740
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
140 PM EDT FRI MAR 30 2018
DEZ001-002-MDZ008-012-015-020-NJZ016-021-301830-
Kent-New Castle-Queen Anne's-Cecil-Kent-Caroline-Salem-Cumberland-
140 PM EDT FRI MAR 30 2018
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NEW CASTLE...KENT...
QUEEN ANNE'S...NORTHEASTERN CAROLINE...KENT...CECIL...WEST CENTRAL
CUMBERLAND AND SOUTHWESTERN SALEM COUNTIES...
At 139 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Newark to Chester. Movement was east at
45 mph.
Winds up to 40 mph are possible with these storms.
Locations impacted include...
Dover, Newark, Middletown, Elkton, Havre De Grace, Centerville,
Calvert, Pennsville, Smyrna, Carneys Point, New Castle, Chestertown,
Salem, Centreville, North East, Woodstown, Alloway, Camden, Clayton
and Rising Sun.
LAT...LON 3904 7631 3898 7628 3900 7617 3903 7624
3917 7628 3932 7618 3943 7600 3952 7598
3955 7608 3960 7613 3972 7606 3967 7529
3935 7535 3930 7543 3921 7540 3894 7540
3894 7624 3897 7625 3894 7625 3894 7636
TIME...MOT...LOC 1739Z 254DEG 40KT 3968 7573 3898 7627
$$
FitzsimmonsThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 1:58 PM EDT | Special Marine Warning | PHI | 62 min | |
| Mar 30, 2:34 PM EDT | Special Weather Statement | PHI | Atlantic, Burlington, Camden, Gloucester, Salem | 41 min |
| Mar 30, 3:16 PM EDT | Special Weather Statement | PHI | Atlantic, Ocean | 44 min |
| Mar 30, 3:34 PM EDT | Special Marine Warning | PHI | 56 min |
Nearby
Special Weather Statements in Maryland, 2018Special Weather Statements in Delaware, 2018Special Weather Statements in New Jersey, 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.