Alert archive / Pennsylvania / Tornado Watches in 2023
Tornado Watch 605
The Storm Prediction Center issued this tornado watch at Aug 7, 2023, 3:13 PM EDT for 5 states. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 7, 2023, 3:13 PM EDT (19:13 UTC)
- Expired
- Aug 7, 2023, 11:00 PM EDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 65 kt
All 48 counties
Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Broome County, NY, Chenango County, NY, Delaware County, NY, Madison County, NY, Oneida County, NY, Otsego County, NY, Sullivan County, NY, Tioga County, NY, Berks County, PA, Bradford County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Delaware County, PA, Lackawanna County, PA, Lehigh County, PA, Luzerne County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA, Pike County, PA, Susquehanna County, PA, Wayne County, PA, Wyoming County, PA
The radar
The Philadelphia radar (KDIX), 134 km from the middle of the area, began a volume at 19:14 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 80%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
44 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 3:17 PM EDT | Tornado Warning | BGM | Bradford | 43 min |
| Aug 7, 3:54 PM EDT | Severe Thunderstorm Warning | BGM | Broome | 66 min |
| Aug 7, 3:55 PM EDT | Tornado Warning | BGM | Bradford | 35 min |
| Aug 7, 4:26 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 34 min |
| Aug 7, 4:27 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Tioga, Tompkins | 33 min |
| Aug 7, 4:33 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Wyoming | 42 min |
| Aug 7, 4:58 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 47 min |
| Aug 7, 5:11 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna, Wyoming | 34 min |
| Aug 7, 5:16 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 44 min |
| Aug 7, 5:30 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Susquehanna, Wyoming | 45 min |
| Aug 7, 5:33 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester | 57 min |
| Aug 7, 5:37 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 53 min |
| Aug 7, 5:43 PM EDT | Severe Thunderstorm Warning | BGM | Broome | 47 min |
| Aug 7, 5:49 PM EDT | Tornado Warning | BGM | Lackawanna, Susquehanna, Wyoming | 26 min |
| Aug 7, 5:51 PM EDT | Severe Thunderstorm Warning | BGM | Madison, Onondaga | 24 min |
| Aug 7, 5:54 PM EDT | Tornado Warning | BGM | Susquehanna, Wayne | 36 min |
| Aug 7, 5:57 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 63 min |
| Aug 7, 5:58 PM EDT | Severe Thunderstorm Warning | BGM | Chenango, Cortland, Madison | 62 min |
| Aug 7, 6:03 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 57 min |
| Aug 7, 6:08 PM EDT | Tornado Warning | PHI | Chester | 19 min |
| Aug 7, 6:15 PM EDT | Severe Thunderstorm Warning | BGM | Madison, Oneida, Onondaga | 45 min |
| Aug 7, 6:21 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 69 min |
| Aug 7, 6:23 PM EDT | Tornado Warning | BGM | Broome, Delaware | 20 min |
| Aug 7, 6:35 PM EDT | Tornado Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 25 min |
| Aug 7, 6:44 PM EDT | Severe Thunderstorm Warning | BGM | Oneida | 31 min |
| Aug 7, 6:45 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 45 min |
| Aug 7, 6:48 PM EDT | Severe Thunderstorm Warning | BGM | Madison, Oneida | 57 min |
| Aug 7, 6:49 PM EDT | Severe Thunderstorm Warning | BGM | Oneida | 26 min |
| Aug 7, 6:49 PM EDT | Severe Thunderstorm Warning | BGM | Delaware, Sullivan | 41 min |
| Aug 7, 6:51 PM EDT | Tornado Warning | BGM | Madison, Oneida | 24 min |
| Aug 7, 6:53 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 1 more | 52 min |
| Aug 7, 6:57 PM EDT | Tornado Warning | BGM | Wayne | 33 min |
| Aug 7, 6:58 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle, Sussex | 62 min |
| Aug 7, 7:03 PM EDT | Tornado Warning | BGM | Oneida | 12 min |
| Aug 7, 7:08 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Madison, Oneida, Onondaga | 45 min |
| Aug 7, 7:20 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester, Hunterdon, Mercer and 4 more | 58 min |
| Aug 7, 7:26 PM EDT | Severe Thunderstorm Warning | BGM | Delaware, Sullivan | 49 min |
| Aug 7, 7:27 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 48 min |
| Aug 7, 7:27 PM EDT | Severe Thunderstorm Warning | BGM | Oneida | 24 min |
| Aug 7, 7:54 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 51 min |
| Aug 7, 7:56 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 49 min |
| Aug 7, 8:14 PM EDT | Severe Thunderstorm Warning | BGM | Delaware, Sullivan | 26 min |
| Aug 7, 9:12 PM EDT | Flash Flood Warning | BGM | Oneida | 3 hr |
| Aug 7, 9:14 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 45 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 7.2 hours before the alert went out and 204 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
- 36 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 726 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 143 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 2:31 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 59 min |
| Aug 7, 5:01 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 89 min |
| Aug 7, 6:57 PM EDT | Mesoscale Discussion | SPC | New Castle | 93 min |
| Aug 7, 8:18 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Charles, Frederick, Harford and 5 more | 117 min |
| Aug 7, 12:14 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Carroll, Charles, Frederick and 5 more | 2 hr |
| Aug 7, 1:20 PM EDT | Tornado Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 14 more | 11 hr |
| Aug 7, 3:17 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 7 more | 88 min |
| Aug 7, 4:40 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Charles, Frederick, Howard and 4 more | 95 min |
| Aug 7, 6:41 PM EDT | Severe Thunderstorm Watch | SPC | Bergen, Essex, Hudson, Passaic, Union | 4 hr |
| Aug 7, 12:39 PM EDT | Mesoscale Discussion | SPC | Allegany, Cayuga, Chemung, Livingston, Monroe, Onondaga and 8 more | 2 hr |
| Aug 6, 8:03 PM EDT | Mesoscale Discussion | SPC | Erie | 57 min |
| Aug 7, 10:19 AM EDT | Mesoscale Discussion | SPC | Greene | 86 min |
| Aug 7, 10:57 AM EDT | Tornado Watch | SPC | Fayette, Greene, Washington | 7 hr |
| Aug 7, 1:03 PM EDT | Mesoscale Discussion | SPC | Greene | 87 min |
Nearby
Tornado Watches in Pennsylvania, 2023Tornado Watches in New Jersey, 2023Tornado Watches in New York, 2023Every tornado watch 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.