Alert archive / New Jersey / Areal Flood Advisories in 2022

Areal Flood Advisory 55, NWS Philadelphia/Mount Holly

July 7, 20224 counties in New Jersey

NWS Philadelphia/Mount Holly issued this areal flood advisory at Jul 7, 2022, 6:54 AM EDT for 4 counties in New Jersey. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jul 7, 2022, 6:54 AM EDT (10:54 UTC)
Expired: Jul 7, 2022, 10:00 AM EDT
In force: 3 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Salem County, NJ

The radar

The Philadelphia radar (KDIX), 58 km from the middle of the area, began a volume at 10:54 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 00:00Z, 10.9 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.

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: 807 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 1227 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood advisory 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 areal flood advisory went out at Jul 7, 6:36 AM EDT, 18 minutes earlier.

Area forecast discussion, Jul 7, 6:36 AM EDT, 18 minutes before

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Hazardous weather outlook, Jul 7, 5:08 AM EDT, 1 hour 46 minutes before

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In the hours before

Special weather statement, Jul 7, 2:56 AM EDT, 3 hours 58 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
256 AM EDT Thu Jul 7 2022

MDZ012-015-019-070730-
Queen Anne's MD-Talbot MD-Kent MD-
256 AM EDT Thu Jul 7 2022

...A strong thunderstorm will impact portions of northwestern Talbot,
central Queen Anne's and southwestern Kent Counties through 330 AM
EDT...

At 256 AM EDT, Doppler radar was tracking a strong thunderstorm over
Stevensville, or near Severn River, moving east at 20 mph.

HAZARD...Wind gusts up to 40 mph and pea size 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...
Talbot, Rock Hall, St. Michaels, Chester, Overton, Old Town,
Grasonville, Stevensville, Copperville, Queenstown and Stevensville
South.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3895 7636 3904 7631 3898 7628 3900 7617
      3903 7624 3915 7626 3917 7604 3871 7618
      3880 7631 3886 7626 3879 7620 3879 7619
      3894 7621 3897 7625 3891 7624 3890 7628
      3896 7631 3884 7637 3884 7638 3885 7638
TIME...MOT...LOC 0656Z 284DEG 17KT 3896 7635

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

SFJ

Special weather statement, Jul 7, 3:27 AM EDT, 3 hours 27 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
327 AM EDT Thu Jul 7 2022

DEZ002-MDZ015-019-020-070815-
Kent DE-Queen Anne's MD-Talbot MD-Caroline MD-
327 AM EDT Thu Jul 7 2022

...Strong thunderstorms will impact portions of southwestern Kent,
Talbot, south central Queen Anne's and Caroline Counties through 415
AM EDT...

At 327 AM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Skipton to near Tilghman Island. Movement
was east at 30 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...
Easton, Talbot, Denton, Harrington, Ridgely, Trappe, St. Michaels,
Preston, Oxford, Queen Anne, Smithville, Copperville, Agner,
Choptank, Windyhill, Andrewsville, Tanyard, Harmony, Tilghman Island
and Skipton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3886 7626 3879 7620 3879 7619 3890 7620
      3895 7614 3894 7549 3883 7563 3883 7572
      3876 7572 3868 7593 3857 7603 3868 7621
      3875 7624 3871 7628 3878 7629 3876 7632
      3867 7634 3868 7635 3875 7638
TIME...MOT...LOC 0727Z 278DEG 27KT 3890 7613 3872 7636

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

SFJ

Special weather statement, Jul 7, 4:17 AM EDT, 2 hours 37 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
417 AM EDT Thu Jul 7 2022

MDZ019-020-070845-
Talbot MD-Caroline MD-
417 AM EDT Thu Jul 7 2022

...A strong thunderstorm will impact portions of southeastern Talbot
and southern Caroline Counties through 445 AM EDT...

At 417 AM EDT, Doppler radar was tracking a strong thunderstorm over
Hambleton, or near Easton, moving east at 20 mph.

HAZARD...Wind gusts up to 40 mph and pea size 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...
Easton, Federalsburg, Trappe, Preston, Choptank, Tanyard, Hambleton
and Windyhill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3859 7606 3860 7606 3863 7608 3864 7615
      3866 7616 3879 7612 3874 7571 3866 7573
      3869 7577 3868 7580 3870 7580 3871 7584
      3870 7590 3866 7596 3860 7599 3857 7603
TIME...MOT...LOC 0817Z 285DEG 19KT 3868 7606

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

SFJ

Local storm report, Jul 7, 5:01 AM EDT, 1 hour 53 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 7:20 AM EDT	Areal Flood Advisory	PHI	Atlantic	3 hr
Jul 7, 8:53 AM EDT	Areal Flood Advisory	PHI	Atlantic, Camden, Gloucester	3 hr
Jul 7, 6:04 AM EDT	Areal Flood Advisory	PHI	Chester, Delaware, Montgomery, Philadelphia	3 hr

Nearby

Areal Flood Advisories in New Jersey, 2022 Every areal flood advisory in 2022

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.