Alert archive / New York / Dense Fog Advisories in 2021

Dense Fog Advisory 2, NWS Albany, NY

July 26, 20218 counties in New York; Windham County, Vermont; Berkshire County, Massachusetts

NWS Albany, NY issued this dense fog advisory at Jul 26, 2021, 6:02 AM EDT for 8 counties in New York; Windham County, Vermont; Berkshire County, Massachusetts. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jul 26, 2021, 6:02 AM EDT (10:02 UTC)
Expired: Jul 26, 2021, 8:39 AM EDT
In force: 3 hr
Issued by: NWS Albany, NY

Counties Berkshire County, MA, Albany County, NY, Columbia County, NY, Dutchess County, NY, Greene County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Ulster County, NY, Windham County, VT

The radar

The Albany radar (KENX), 32 km from the middle of the area, began a volume at 10:01 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 00:00Z, 10.0 hours before the alert went out and 192 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: 1198 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 685 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 111 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this dense fog advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Albany, NY wrote its last area forecast discussion before this dense fog advisory went out at Jul 26, 3:52 AM EDT, 2 hours 10 minutes earlier.

Area forecast discussion, Jul 26, 3:52 AM EDT, 2 hours 10 minutes before

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Hazardous weather outlook, Jul 26, 3:57 AM EDT, 2 hours 5 minutes before

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In the hours before

Special weather statement, Jul 26, 4:06 AM EDT, 1 hour 56 minutes before

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Nearby

Dense Fog Advisories in New York, 2021 Dense Fog Advisories in Vermont, 2021 Dense Fog Advisories in Massachusetts, 2021 Every dense fog advisory in 2021

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.