Alert archive / New York / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 21, NWS New York, NY

May 18, 2000Orange County, New York

NWS New York, NY issued this severe thunderstorm warning at May 18, 2000, 4:54 PM EDT for Orange County, New York. It was in force for 36 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 18, 2000, 4:54 PM EDT (20:54 UTC)
Expired: May 18, 2000, 5:30 PM EDT
In force: 36 min
Issued by: NWS New York, NY
Area: Whole counties

County Orange County, NY

The radar

The Albany radar (KENX), 133 km from the middle of the area, began a volume at 20:54 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.

What was reported inside it

Time	Report	Where	Remark
May 18, 5:30 PM EDT	Thunderstorm Wind 70 E	Middletown, NY
May 18, 5:40 PM EDT	Hail 0.88	Huguenot, NY

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 18, 3:15 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.9 hours before the alert went out and 135 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: 977 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 245 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 
WUUS51 KOKX 182055
SVRNYC
NYC071-182130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
454 PM EDT THU MAY 18 2000

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES...

  IN SOUTHEASTERN NEW YORK STATE...
     ORANGE...

* UNTIL 530 PM EDT...

* AT 454 PM EDT A LINE OF SEVERE THUNDERSTORMS WERE ALONG A LINE   
EXTENDING FROM 29 MILES NORTH OF OTISVILLE TO 26 MILES NORTHWEST OF 
OTISVILLE TO 33 MILES NORTHWEST OF PORT JERVIS...MOVING SOUTHEAST   
AT 40 MPH.

* SEVERE THUNDERSTORMS SHOULD BE IN
  THE VICINITY OF...
  MIDDLETOWN...MONTGOMERY...OTISVILLE AROUND 525 PM EDT...

HAIL TO THE SIZE OF 1 INCH AND WIND GUSTS TO 70 MPH CAN BE EXPECTED 
IN THE WARNED AREA.

REMEMBER A SEVERE THUNDERSTORM CAN PRODUCE DAMAGING WINDS IN EXCESS
OF 58 MPH...LARGE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN.

$$

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN UPTON NY.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 5:16 PM EDT	Severe Thunderstorm Warning	OKX	Putnam, Westchester	44 min
May 18, 5:16 PM EDT	Severe Thunderstorm Warning	OKX	Rockland	44 min
May 18, 5:28 PM EDT	Severe Thunderstorm Warning	OKX	Orange	32 min
May 18, 5:55 PM EDT	Severe Thunderstorm Warning	OKX	Putnam, Rockland, Westchester	65 min
May 18, 6:01 PM EDT	Severe Thunderstorm Warning	OKX	Orange	29 min
May 18, 6:51 PM EDT	Severe Thunderstorm Warning	OKX	Nassau, Suffolk	24 min
May 18, 6:51 PM EDT	Severe Thunderstorm Warning	OKX	Queens	24 min
May 18, 6:51 PM EDT	Severe Thunderstorm Warning	OKX	Bronx	24 min
May 18, 6:55 PM EDT	Severe Thunderstorm Warning	OKX	Richmond	35 min
May 18, 6:55 PM EDT	Severe Thunderstorm Warning	OKX	Kings	35 min
May 18, 6:55 PM EDT	Severe Thunderstorm Warning	OKX	New York	35 min
May 18, 7:06 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	54 min

Nearby

Severe Thunderstorm Warnings in New York, 2000 Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.