Alert archive / Maryland / Special Weather Statements in 2020
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Aug 12, 2020, 4:02 PM EDT for Caroline County, Maryland. It was in force for 28 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 12, 2020, 4:02 PM EDT (20:02 UTC)
- Expired
- Aug 12, 2020, 4:30 PM EDT
- In force
- 28 min
- Issued by
- NWS Philadelphia/Mount Holly
County Caroline County, MD
The radar
The Dover AFB radar (KDOX), 42 km from the middle of the area, began a volume at 20:03 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, 8.0 hours before the alert went out and 112 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
- 1590 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 729 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
919
WWUS81 KPHI 122002
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
402 PM EDT Wed Aug 12 2020
MDZ019-020-122030-
Talbot-Caroline-
402 PM EDT Wed Aug 12 2020
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN TALBOT AND CENTRAL
CAROLINE COUNTIES...
At 402 PM EDT, a strong thunderstorm was located over Matthews, or 7
miles northeast of Easton. The storm is nearly stationary.
Wind gusts up to 40 mph are possible with this storm.
Locations impacted include...
Easton, Denton, Ridgely, Preston, Queen Anne, Matthews, Harmony,
Griffin, Cordova, Agner and Hillsboro.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
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.
LAT...LON 3881 7608 3892 7605 3893 7599 3892 7595
3893 7595 3896 7573 3884 7573 3870 7583
3870 7588
TIME...MOT...LOC 2002Z 200DEG 3KT 3882 7594
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 12:06 PM EDT | Special Weather Statement | PHI | Monmouth | 24 min |
| Aug 12, 12:16 PM EDT | Special Weather Statement | PHI | Burlington | 29 min |
| Aug 12, 12:33 PM EDT | Severe Thunderstorm Warning | PHI | Burlington | 42 min |
| Aug 12, 12:43 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Mercer, Monmouth, Ocean and 1 more | 3 hr |
| Aug 12, 12:45 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 45 min |
| Aug 12, 1:12 PM EDT | Flash Flood Warning | PHI | Burlington | 3 hr |
| Aug 12, 1:12 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Monmouth, Ocean | 48 min |
| Aug 12, 1:25 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 50 min |
| Aug 12, 1:54 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 51 min |
| Aug 12, 1:57 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Ocean | 48 min |
| Aug 12, 2:40 PM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester | 3 hr |
| Aug 12, 2:42 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 25 min |
| Aug 12, 2:44 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 46 min |
| Aug 12, 3:12 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester, Salem | 29 min |
| Aug 12, 3:54 PM EDT | Special Marine Warning | PHI | 53 min | |
| Aug 12, 11:48 AM EDT | Special Weather Statement | PHI | Philadelphia | 27 min |
| Aug 12, 1:47 PM EDT | Flash Flood Warning | PHI | Chester, Delaware | 2 hr |
| Aug 12, 2:04 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 21 min |
| Aug 12, 3:20 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 29 min |
| Aug 12, 3:36 PM EDT | Flash Flood Warning | PHI | Chester | 108 min |
| Aug 12, 5:04 PM EDT | Areal Flood Advisory | PHI | Lehigh, Northampton | 56 min |
| Aug 12, 5:09 PM EDT | Areal Flood Warning | PHI | Berks | 51 min |
| Aug 12, 12:55 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 3 hr |
| Aug 12, 12:55 PM EDT | Special Weather Statement | PHI | Kent | 35 min |
| Aug 12, 1:06 PM EDT | Flash Flood Warning | PHI | Kent, New Castle | 3 hr |
| Aug 12, 1:37 PM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Aug 12, 2:38 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 52 min |
| Aug 12, 3:06 PM EDT | Areal Flood Advisory | PHI | Kent, Sussex | 3 hr |
| Aug 12, 3:15 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 45 min |
| Aug 12, 3:31 PM EDT | Flash Flood Warning | PHI | Kent | 3 hr |
| Aug 12, 3:46 PM EDT | Flash Flood Warning | PHI | Kent, Sussex | 3 hr |
| Aug 12, 4:00 PM EDT | Special Weather Statement | PHI | Kent | 30 min |
| Aug 12, 4:11 PM EDT | Areal Flood Warning | PHI | Caroline, Talbot | 3 hr |
| Aug 12, 4:43 PM EDT | Areal Flood Advisory | PHI | Cecil, Kent | 54 min |
Nearby
Special Weather Statements in Maryland, 2020Every 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.