Alert archive / Delaware / Special Weather Statements in 2020

Special Weather Statement, NWS Philadelphia/Mount Holly

August 25, 2020Kent County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 25, 2020, 7:15 PM EDT for Kent 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: Aug 25, 2020, 7:15 PM EDT (23:15 UTC)
Expired: Aug 25, 2020, 8:00 PM EDT
In force: 45 min
Issued by: NWS Philadelphia/Mount Holly

County Kent County, DE

The radar

The Dover AFB radar (KDOX), 25 km from the middle of the area, began a volume at 23:18 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, 11.3 hours before the alert went out and 164 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 573 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 1117 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 176 m²/s²
0-3 km storm-relative helicity: 176 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this special weather statement went out at Aug 25, 6:05 PM EDT, 1 hour 10 minutes earlier.

Area forecast discussion, Aug 25, 6:05 PM EDT, 1 hour 10 minutes before

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Hazardous weather outlook, Aug 25, 6:46 PM EDT, 29 minutes before

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In the hours before

Local storm report, Aug 25, 6:55 PM EDT, 20 minutes before

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Local storm report, Aug 25, 6:58 PM EDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
658 PM EDT TUE AUG 25 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0654 PM     HAIL             NEWPORT                 39.30N 75.17W
08/25/2020  E1.00 INCH       CUMBERLAND         NJ   TRAINED SPOTTER

            DIME TO QUARTER SIZE HAIL STONES.

&&

TCD

Local storm report, Aug 25, 7:02 PM EDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
702 PM EDT TUE AUG 25 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0610 PM     TSTM WND GST     2 E NORTH EAST          39.60N 75.91W
08/25/2020  M66 MPH          CECIL              MD   MESONET

&&

SFJ

Local storm report, Aug 25, 7:09 PM EDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
709 PM EDT TUE AUG 25 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0625 PM     TSTM WND DMG     3 WSW HOPEWELL TWP.     39.42N 75.30W
08/25/2020                   CUMBERLAND         NJ   911 CALL CENTER

            BRANCHES AND WIRES DOWN. TIME ESTIMATED FROM
            RADAR.

&&

SFJ

Local storm report, Aug 25, 7:10 PM EDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
710 PM EDT TUE AUG 25 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 PM     MARINE TSTM WIND FORTESCUE               39.24N 75.17W
08/25/2020  M65 MPH          CUMBERLAND         NJ   MESONET

            NJ MESONET GUST.

&&

TCD

Special weather statement, Aug 25, 7:15 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
715 PM EDT Tue Aug 25 2020

DEZ002-003-260000-
Inland Sussex-Kent-
715 PM EDT Tue Aug 25 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL SUSSEX AND CENTRAL
KENT COUNTIES...

At 715 PM EDT, a strong thunderstorm was located over Camden, or near
Dover, moving southeast at 40 mph.

Wind gusts up to 50 mph are possible with this storm.

Locations impacted include...
Dover, Milford, Camden, Bowers, Woodside, Viola, Rising Sun-Lebanon,
Rising Sun, Hazlettville, Dover Base Housing, Big Stone Beach, Dover
Speedway, Wyoming, Felton, Frederica, Magnolia, Rodney Village, Kent
Acres, Riverview and Highland Acres.

LAT...LON 3911 7568 3922 7554 3895 7525 3885 7540
TIME...MOT...LOC 2315Z 314DEG 34KT 3911 7555

JEO

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 25, 4:43 PM EDT	Special Weather Statement	PHI	Sussex	47 min
Aug 25, 4:49 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	26 min
Aug 25, 5:35 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Salem	40 min
Aug 25, 5:36 PM EDT	Special Marine Warning	PHI		54 min
Aug 25, 5:57 PM EDT	Severe Thunderstorm Warning	PHI	Warren	18 min
Aug 25, 6:10 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Salem	50 min
Aug 25, 6:13 PM EDT	Special Weather Statement	PHI	Middlesex, Morris, Somerset	47 min
Aug 25, 6:33 PM EDT	Special Marine Warning	PHI		57 min
Aug 25, 6:56 PM EDT	Severe Thunderstorm Warning	PHI	Cape May, Cumberland	43 min
Aug 25, 7:28 PM EDT	Special Marine Warning	PHI		24 min
Aug 25, 5:50 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	40 min
Aug 25, 6:31 PM EDT	Severe Thunderstorm Warning	PHI	Kent, New Castle	19 min
Aug 25, 7:52 PM EDT	Special Weather Statement	PHI	Talbot	38 min

Nearby

Special Weather Statements in Delaware, 2020 Every special weather statement in 2020

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.