Alert archive / Delaware / Special Weather Statements in 2023
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Jul 20, 2023, 2:48 PM EDT for New Castle County, Delaware. It was in force for 27 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
- Jul 20, 2023, 2:48 PM EDT (18:48 UTC)
- Expired
- Jul 20, 2023, 3:15 PM EDT
- In force
- 27 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.50 in
- Wind
- 40
County New Castle County, DE
The radar
The Dover AFB radar (KDOX), 84 km from the middle of the area, began a volume at 18:51 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, 6.8 hours before the alert went out and 170 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
- 2 J/kg
- Mixed-layer CIN
- -200 J/kg
- Mixed-layer LCL
- 1313 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
290
WWUS81 KPHI 201848
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
248 PM EDT Thu Jul 20 2023
DEZ001-201915-
New Castle DE-
248 PM EDT Thu Jul 20 2023
...A strong thunderstorm will impact portions of west central New
Castle County through 315 PM EDT...
At 247 PM EDT, Doppler radar was tracking a strong thunderstorm over
Saint Georges, or 8 miles southeast of Newark, moving south at 5 mph.
HAZARD...Wind gusts up to 40 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Delaware City, Saint Georges, Glasgow, Bear and Mount Pleasant.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3966 7561 3956 7551 3956 7552 3954 7554
3954 7553 3953 7553 3949 7572 3961 7575
TIME...MOT...LOC 1847Z 337DEG 6KT 3959 7565
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 2:11 PM EDT | Special Marine Warning | PHI | 49 min | |
| Jul 20, 1:53 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 40 min |
| Jul 20, 2:09 PM EDT | Special Weather Statement | PHI | New Castle | 36 min |
| Jul 20, 2:37 PM EDT | Areal Flood Advisory | PHI | New Castle | 109 min |
| Jul 20, 4:23 PM EDT | Special Weather Statement | PHI | Kent | 37 min |
| Jul 20, 4:27 PM EDT | Special Weather Statement | PHI | Sussex | 48 min |
Nearby
Special Weather Statements in Delaware, 2023Every special weather statement in 2023
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.