Alert archive / Pennsylvania / Special Weather Statements in 2019

Special Weather Statement, NWS Philadelphia/Mount Holly

May 30, 2019Mercer County, New Jersey; Bucks County, Montgomery County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at May 30, 2019, 7:56 PM EDT for Mercer County, New Jersey; Bucks County, Montgomery County, Pennsylvania. 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: May 30, 2019, 7:56 PM EDT (23:56 UTC)
Expired: May 30, 2019, 8:30 PM EDT
In force: 34 min
Issued by: NWS Philadelphia/Mount Holly

Counties Mercer County, NJ, Bucks County, PA, Montgomery County, PA

The radar

The Philadelphia radar (KDIX), 84 km from the middle of the area, began a volume at 23:59 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

Brookhaven, NY (KOKX), launched 12:00Z, 11.9 hours before the alert went out and 221 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 546 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: -63 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 30, 7:23 PM EDT, 33 minutes earlier.

Area forecast discussion, May 30, 7:23 PM EDT, 33 minutes before

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Hazardous weather outlook, May 30, 7:07 PM EDT, 49 minutes before

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In the hours before

Local storm report, May 30, 7:19 PM EDT, 37 minutes before

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Local storm report, May 30, 7:20 PM EDT, 36 minutes before

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Local storm report, May 30, 7:23 PM EDT, 33 minutes before

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Special weather statement, May 30, 7:35 PM EDT, 21 minutes before

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Local storm report, May 30, 7:51 PM EDT, 5 minutes before

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Special weather statement, May 30, 7:56 PM EDT, 0 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
May 29, 8:00 PM EDT	Special Marine Warning	PHI		60 min
May 29, 8:02 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Cape May, Ocean	107 min
May 29, 8:35 PM EDT	Special Marine Warning	PHI		85 min
May 30, 3:20 AM EDT	Flash Flood Watch	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 7 more	18 hr
May 30, 3:33 AM EDT	Dense Fog Advisory	PHI	Burlington, Mercer	4 hr
May 30, 4:17 PM EDT	Areal Flood Advisory	PHI	Sussex, Warren	4 hr
May 30, 4:19 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	4 hr
May 30, 4:25 PM EDT	Special Weather Statement	PHI	Warren	35 min
May 30, 4:36 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Monmouth, Ocean	39 min
May 30, 4:40 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Warren	50 min
May 30, 4:46 PM EDT	Special Weather Statement	PHI	Salem	29 min
May 30, 4:48 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	42 min
May 30, 4:49 PM EDT	Flash Flood Warning	PHI	Warren	4 hr
May 30, 4:57 PM EDT	Areal Flood Advisory	PHI	Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Ocean and 1 more	4 hr
May 30, 4:58 PM EDT	Special Marine Warning	PHI		62 min
May 30, 5:03 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Somerset, Warren	4 hr
May 30, 5:14 PM EDT	Special Weather Statement	PHI	Salem	31 min
May 30, 5:17 PM EDT	Flash Flood Warning	PHI	Burlington, Camden, Mercer, Monmouth	4 hr
May 30, 5:20 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset, Warren	40 min
May 30, 5:22 PM EDT	Areal Flood Advisory	PHI	Cape May, Cumberland, Gloucester, Salem	2 hr
May 30, 5:23 PM EDT	Special Weather Statement	PHI	Mercer	37 min
May 30, 5:32 PM EDT	Severe Thunderstorm Warning	PHI	Cape May	43 min
May 30, 5:33 PM EDT	Special Marine Warning	PHI		27 min
May 30, 5:55 PM EDT	Special Marine Warning	PHI		65 min
May 30, 5:55 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset	31 min
May 30, 6:06 PM EDT	Flash Flood Warning	PHI	Hunterdon, Middlesex, Morris, Somerset	4 hr
May 30, 6:53 PM EDT	Flash Flood Warning	PHI	Morris, Somerset	4 hr
May 30, 7:35 PM EDT	Special Weather Statement	PHI	Mercer	25 min
May 29, 8:16 PM EDT	River Flood Warning	PHI	Bucks	11 hr
May 29, 9:57 PM EDT	Areal Flood Warning	PHI	Lehigh	2 hr
May 30, 4:03 PM EDT	Special Weather Statement	PHI	Berks	27 min
May 30, 4:22 PM EDT	Special Weather Statement	PHI	Delaware	23 min
May 30, 5:02 PM EDT	Special Weather Statement	PHI	Philadelphia	28 min
May 30, 6:51 PM EDT	Special Weather Statement	PHI	Berks	24 min
May 29, 8:10 PM EDT	Special Weather Statement	PHI	Sussex	35 min
May 29, 8:49 PM EDT	Special Weather Statement	PHI	Sussex	26 min
May 30, 4:08 PM EDT	Areal Flood Advisory	PHI	Kent, New Castle	2 hr
May 30, 4:09 PM EDT	Special Weather Statement	PHI	New Castle	36 min
May 30, 4:32 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	43 min
May 30, 5:09 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	51 min
May 30, 3:42 PM EDT	Special Weather Statement	PHI	Kent, Queen Anne's	33 min
May 30, 3:53 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Queen Anne's, Talbot	52 min

Nearby

Special Weather Statements in Pennsylvania, 2019 Special Weather Statements in New Jersey, 2019 Every 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.