Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS New York, NY

August 12, 2021Dutchess County, New York

NWS New York, NY issued this special weather statement at Aug 12, 2021, 4:21 PM EDT for Dutchess County, New York. It was in force for 24 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, 2021, 4:21 PM EDT (20:21 UTC)
Expired
Aug 12, 2021, 4:45 PM EDT
In force
24 min
Issued by
NWS New York, NY
Hail
0.25 in
Wind
50

County Dutchess County, NY

The radar

The Brookhaven radar (KOKX), 100 km from the middle of the area, began a volume at 20:23 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, 8.4 hours before the alert went out and 100 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2021-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 278 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2021-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -82 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
278 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
1400 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-82 m²/s²
0-3 km storm-relative helicity
-47 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

989 
WWUS81 KOKX 122021
SPSOKX

Special Weather Statement
National Weather Service New York NY
421 PM EDT Thu Aug 12 2021
 
CTZ005-122045-
Northern Fairfield CT-
421 PM EDT Thu Aug 12 2021

...A strong thunderstorm will impact portions of north central
Fairfield County through 445 PM EDT...

At 420 PM EDT, Doppler radar was tracking a strong thunderstorm near
Pawling, moving east at 40 mph.

HAZARD...Wind gusts up to 50 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...
Sherman.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 4166 7350 4166 7349 4165 7349 4164 7350
      4153 7345 4153 7353 4167 7352
TIME...MOT...LOC 2020Z 273DEG 35KT 4161 7367 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

$$

The office that day

Everything else NWS New York, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 11, 8:32 PM EDTSpecial Weather StatementOKXWestchester28 min
Aug 11, 8:39 PM EDTAreal Flood AdvisoryOKXKings, New York, Queens, Richmond2 hr
Aug 11, 9:00 PM EDTSpecial Marine WarningOKX30 min
Aug 11, 9:01 PM EDTSpecial Weather StatementOKXKings, New York, Richmond29 min
Aug 11, 9:25 PM EDTSpecial Weather StatementOKXKings, Queens35 min
Aug 11, 9:27 PM EDTSpecial Marine WarningOKX33 min
Aug 12, 4:07 PM EDTSevere Thunderstorm WarningOKXOrange, Rockland41 min
Aug 12, 4:39 PM EDTSpecial Weather StatementOKXBronx, New York51 min
Aug 12, 4:45 PM EDTSpecial Marine WarningOKX90 min
Aug 12, 4:53 PM EDTSpecial Weather StatementOKXRockland52 min
Aug 12, 5:04 PM EDTSevere Thunderstorm WarningOKXOrange, Putnam, Rockland, Westchester22 min
Aug 12, 5:20 PM EDTSpecial Weather StatementOKXNassau40 min
Aug 12, 5:53 PM EDTSpecial Weather StatementOKXSuffolk52 min

Nearby

Special Weather Statements in New York, 2021Every special weather statement 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.