Alert archive / New York / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 340

May 24, 20005 states

The Storm Prediction Center issued this severe thunderstorm watch at May 24, 2000, 4:30 PM EDT for 5 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: May 24, 2000, 4:30 PM EDT (20:30 UTC)
Expired: May 24, 2000, 10:00 PM EDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 33 counties

Berkshire County, MA, Hampden County, MA, Hampshire County, MA, Worcester County, MA, Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Hunterdon County, NJ, Morris County, NJ, Passaic County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Bronx County, NY, Columbia County, NY, Dutchess County, NY, Greene County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Queens County, NY, Richmond County, NY, Rockland County, NY, Suffolk County, NY, Sullivan County, NY, Ulster County, NY, Westchester County, NY, Northampton County, PA, Pike County, PA, Providence County, RI

The radar

The Brookhaven radar (KOKX), 95 km from the middle of the area, began a volume at 20:29 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.

Warnings issued inside it

9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
May 24, 4:58 PM EDT	Severe Thunderstorm Warning	OKX	Orange	47 min
May 24, 5:04 PM EDT	Severe Thunderstorm Warning	PHI	Warren	26 min
May 24, 5:15 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon	30 min
May 24, 5:15 PM EDT	Severe Thunderstorm Warning	OKX	Putnam	45 min
May 24, 5:25 PM EDT	Severe Thunderstorm Warning	OKX	Rockland, Westchester	50 min
May 24, 6:26 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	34 min
May 24, 6:48 PM EDT	Severe Thunderstorm Warning	BOX	Hampden	42 min
May 24, 7:08 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	52 min
May 24, 7:41 PM EDT	Severe Thunderstorm Warning	BOX	Hampden	19 min

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.5 hours before the alert went out and 95 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: 573 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 94 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS9 KMKC 242003
MKC WW 242003
CTZ000-MAZ000-NJZ000-NYZ000-PAZ000-RIZ000-250200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 340
STORM PREDICTION CENTER NORMAN OK
403 PM EDT WED MAY 24 2000

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   CONNECTICUT                        
   MASSACHUSETTS                      
   NORTHERN NEW JERSEY                         
   SOUTHEAST NEW YORK                           
                        
                         

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 430 PM UNTIL
1000 PM EDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 90 STATUTE MILES
EAST AND WEST OF A LINE FROM 5 MILES SOUTH OF NEW YORK CITY NEW
YORK TO 25 MILES NORTHWEST OF WESTFIELD MASSACHUSETTS.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...  CONTINUE...WW 338...WW 339...

DISCUSSION...THUNDERSTORMS WITH DAMAGING WINDS AND SOME HAIL ARE
POSSIBLE THIS EVENING AS CURRENT SQUALL LINE MOVES ESEWD DOWN
OUTFLOW BOUNDARY


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 28035.


...VESCIO

;403,0752 422,0744 422,0711 403,0720;

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 24, 3:00 PM EDT	Severe Thunderstorm Watch	SPC	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 7 more	6 hr
May 24, 1:15 PM EDT	Severe Thunderstorm Watch	SPC	Broome, Cayuga, Chemung, Chenango, Cortland, Delaware and 15 more	6 hr

Nearby

Severe Thunderstorm Watches in New York, 2000 Severe Thunderstorm Watches in New Jersey, 2000 Severe Thunderstorm Watches in Connecticut, 2000 Every severe thunderstorm watch in 2000

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.