Alert archive / Delaware / Special Weather Statements in 2019
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Aug 1, 2019, 4:11 PM EDT for New Castle County, Delaware. It was in force for 34 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 1, 2019, 4:11 PM EDT (20:11 UTC)
- Expired
- Aug 1, 2019, 4:45 PM EDT
- In force
- 34 min
- Issued by
- NWS Philadelphia/Mount Holly
County New Castle County, DE
The radar
The Dover AFB radar (KDOX), 102 km from the middle of the area, began a volume at 20:13 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, 8.2 hours before the alert went out and 177 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
- 353 J/kg
- Mixed-layer CIN
- -134 J/kg
- Mixed-layer LCL
- 1030 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
453
WWUS81 KPHI 012011
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
411 PM EDT Thu Aug 1 2019
DEZ001-PAZ102-012045-
New Castle-Eastern Chester-
411 PM EDT Thu Aug 1 2019
...A STRONG THUNDERSTORM WILL AFFECT NORTHERN NEW CASTLE AND SOUTH
CENTRAL CHESTER COUNTIES...
At 411 PM EDT, a strong thunderstorm was located over North Star, or
7 miles north of Newark, moving southeast at 20 mph.
Wind gusts up to 40 mph and half inch hail are possible with this
storm.
Locations impacted include...
Wilmington, Newark, Elsmere, Kennett Square, New Castle, Penns Grove,
Newport, Greenville, Stanton, North Star, Wilmington Manor,
Ladenberg, Pike Creek, Hockessin, Ashland, Bear, Avondale,
Bellefonte, Edgemoor and Toughkenamon.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
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 3990 7573 3976 7546 3972 7548 3971 7550
3972 7552 3967 7555 3963 7561 3962 7561
3962 7567 3979 7585
TIME...MOT...LOC 2011Z 307DEG 19KT 3978 7572
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 8:38 PM EDT | Special Marine Warning | PHI | 67 min | |
| Jul 31, 9:26 PM EDT | Special Marine Warning | PHI | 49 min | |
| Jul 31, 9:33 PM EDT | Severe Thunderstorm Warning | PHI | Cape May, Cumberland | 42 min |
| Aug 1, 2:46 PM EDT | Areal Flood Advisory | PHI | Cumberland | 66 min |
| Aug 1, 3:02 PM EDT | Coastal Flood Advisory | PHI | Burlington, Camden, Cape May, Cumberland, Gloucester, Mercer and 1 more | 12 hr |
| Aug 1, 3:04 PM EDT | Special Weather Statement | PHI | Salem | 26 min |
| Aug 1, 3:43 PM EDT | Special Marine Warning | PHI | 62 min | |
| Aug 1, 3:48 PM EDT | Special Weather Statement | PHI | Salem | 42 min |
| Aug 1, 2:01 PM EDT | Special Weather Statement | PHI | Berks | 29 min |
| Aug 1, 2:28 PM EDT | Special Weather Statement | PHI | Chester | 47 min |
| Aug 1, 3:24 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 66 min |
| Jul 31, 8:39 PM EDT | Special Weather Statement | PHI | Sussex | 36 min |
| Jul 31, 8:48 PM EDT | Special Weather Statement | PHI | Sussex | 27 min |
| Jul 31, 9:18 PM EDT | Special Weather Statement | PHI | Sussex | 27 min |
| Aug 1, 2:43 PM EDT | Special Weather Statement | PHI | Kent | 47 min |
| Aug 1, 3:39 PM EDT | Special Weather Statement | PHI | Kent | 51 min |
| Aug 1, 3:51 PM EDT | Special Weather Statement | PHI | Kent | 39 min |
| Aug 1, 4:00 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 60 min |
| Aug 1, 4:06 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 54 min |
| Aug 1, 4:41 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 21 min |
| Aug 1, 4:56 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 50 min |
| Aug 1, 5:28 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 47 min |
| Aug 1, 6:16 PM EDT | Special Weather Statement | PHI | Sussex | 14 min |
| Jul 31, 8:00 PM EDT | Special Weather Statement | PHI | Kent | 30 min |
| Jul 31, 8:13 PM EDT | Special Weather Statement | PHI | Queen Anne's | 32 min |
| Jul 31, 8:47 PM EDT | Special Weather Statement | PHI | Caroline | 28 min |
| Aug 1, 4:02 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 45 min |
Nearby
Special Weather Statements in Delaware, 2019Every special weather statement in 2019
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.