Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS New York, NY

July 17, 2021Putnam County, New York

NWS New York, NY issued this special weather statement at Jul 17, 2021, 3:25 PM EDT for Putnam County, New York. It was in force for 50 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
Jul 17, 2021, 3:25 PM EDT (19:25 UTC)
Expired
Jul 17, 2021, 4:15 PM EDT
In force
50 min
Issued by
NWS New York, NY

County Putnam County, NY

The radar

The Brookhaven radar (KOKX), 82 km from the middle of the area, began a volume at 19:25 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, 7.4 hours before the alert went out and 82 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 2021-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1203 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2021-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 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
1203 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
1054 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.0

Open this sounding in Storm Lab

The text

As transmitted.

016 
WWUS81 KOKX 171925
SPSOKX

Special Weather Statement
National Weather Service New York NY
325 PM EDT Sat Jul 17 2021

CTZ005-006-NYZ068-070-172015-
Northern Fairfield-Northern New Haven-Putnam-Northern Westchester-
325 PM EDT Sat Jul 17 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHERN FAIRFIELD...
NORTHWESTERN NEW HAVEN...NORTHERN WESTCHESTER AND PUTNAM COUNTIES...

At 324 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Peekskill to near Brewster to
Newtown. Movement was northeast at 15 mph.

Winds in excess of 40 mph and pea size hail are possible with these
storms.

These storms will be near...
  Lake Carmel and Brewster around 330 PM EDT.
  Newtown around 335 PM EDT.
  Bethel and New Fairfield around 355 PM EDT.
  Danbury and Brookfield around 400 PM EDT.
  Southbury around 410 PM EDT.
  Naugatuck and Mahopac around 415 PM EDT.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4164 7294 4156 7295 4137 7330 4136 7364
      4128 7395 4131 7398 4148 7381 4153 7353
      4155 7353 4157 7347 4149 7344 4151 7339
      4149 7337 4147 7331 4151 7332 4151 7316
      4156 7316 4157 7309 4162 7302 4163 7302
TIME...MOT...LOC 1924Z 228DEG 13KT 4130 7398 4141 7357 4141 7333 

$$

Goodman

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 1:13 PM EDTSpecial Weather StatementOKXNew York32 min
Jul 17, 1:48 PM EDTSpecial Marine WarningOKX22 min
Jul 17, 1:51 PM EDTSevere Thunderstorm WarningOKXKings, Queens24 min
Jul 17, 2:01 PM EDTSevere Thunderstorm WarningOKXNew York44 min
Jul 17, 2:42 PM EDTSevere Thunderstorm WarningOKXNew York33 min
Jul 17, 2:49 PM EDTSpecial Weather StatementOKXRichmond41 min
Jul 17, 3:10 PM EDTTornado WarningOKXRichmond19 min
Jul 17, 3:18 PM EDTSevere Thunderstorm WarningOKXKings, New York, Richmond42 min
Jul 17, 3:20 PM EDTSpecial Marine WarningOKX55 min
Jul 17, 3:54 PM EDTSevere Thunderstorm WarningOKXRichmond16 min
Jul 17, 3:59 PM EDTSpecial Weather StatementOKXRockland46 min
Jul 17, 4:49 PM EDTSpecial Weather StatementOKXOrange26 min
Jul 17, 5:02 PM EDTAreal Flood AdvisoryOKXOrange88 min
Jul 17, 6:54 PM EDTSpecial Weather StatementOKXOrange51 min
Jul 17, 7:05 PM EDTSpecial Weather StatementOKXPutnam40 min
Jul 17, 7:06 PM EDTAreal Flood AdvisoryOKXOrange84 min
Jul 17, 7:40 PM EDTSpecial Weather StatementOKXRockland50 min
Jul 17, 1:55 PM EDTSpecial Weather StatementOKXHudson50 min
Jul 17, 2:10 PM EDTAreal Flood AdvisoryOKXBergen, Essex, Hudson, Union95 min
Jul 17, 2:20 PM EDTFlash Flood WarningOKXBergen, Essex, Hudson, Union3 hr
Jul 17, 2:50 PM EDTSpecial Weather StatementOKXBergen, Passaic55 min
Jul 17, 3:00 PM EDTAreal Flood AdvisoryOKXBergen, Essex, Passaic, Union113 min
Jul 17, 3:24 PM EDTFlash Flood WarningOKXUnion80 min
Jul 17, 6:40 PM EDTSpecial Weather StatementOKXUnion50 min
Jul 17, 6:41 PM EDTAreal Flood AdvisoryOKXEssex, Union94 min
Jul 17, 7:23 PM EDTAreal Flood AdvisoryOKXBergen, Passaic112 min
Jul 17, 2:53 PM EDTSpecial Weather StatementOKX52 min
Jul 17, 4:59 PM EDTAreal Flood AdvisoryOKXNaugatuck Valley Planning Region91 min

Nearby

Special Weather Statements in New York, 2021Special Weather Statements in Connecticut, 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.