Alert archive / New York / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 588

July 18, 20005 states

The Storm Prediction Center issued this severe thunderstorm watch at Jul 18, 2000, 11:30 AM EDT for 5 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jul 18, 2000, 11:30 AM EDT (15:30 UTC)
Expired
Jul 18, 2000, 5:00 PM EDT
In force
6 hr
Issued by
the Storm Prediction Center
All 51 counties

Berkshire County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Worcester County, MA, Androscoggin County, ME, Cumberland County, ME, Franklin County, ME, Kennebec County, ME, Oxford County, ME, York County, ME, Belknap County, NH, Carroll County, NH, Cheshire County, NH, Coos County, NH, Grafton County, NH, Hillsborough County, NH, Merrimack County, NH, Rockingham County, NH, Strafford County, NH, Sullivan County, NH, Albany County, NY, Clinton County, NY, Columbia County, NY, Delaware County, NY, Essex County, NY, Fulton County, NY, Greene County, NY, Montgomery County, NY, Otsego County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Warren County, NY, Washington County, NY, Addison County, VT, Bennington County, VT, Caledonia County, VT, Chittenden County, VT, Essex County, VT, Franklin County, VT, Grand Isle County, VT, Lamoille County, VT, Orange County, VT, Orleans County, VT, Rutland County, VT, Washington County, VT, Windham County, VT, Windsor County, VT

The radar

The Albany radar (KENX), 112 km from the middle of the area, began a volume at 15:33 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

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

IssuedProductOfficeCountiesLasted
Jul 18, 11:53 AM EDTSevere Thunderstorm WarningBTVAddison67 min
Jul 18, 11:55 AM EDTSevere Thunderstorm WarningBOXCheshire35 min
Jul 18, 12:08 PM EDTSevere Thunderstorm WarningALYMontgomery, Schenectady52 min
Jul 18, 12:24 PM EDTSevere Thunderstorm WarningBOXWorcester36 min
Jul 18, 12:37 PM EDTSevere Thunderstorm WarningGYXCarroll53 min
Jul 18, 1:00 PM EDTSevere Thunderstorm WarningBTVChittenden, Lamoille, Washington60 min
Jul 18, 1:00 PM EDTSevere Thunderstorm WarningBTVAddison60 min
Jul 18, 1:09 PM EDTSevere Thunderstorm WarningBOXHillsborough51 min
Jul 18, 1:12 PM EDTSevere Thunderstorm WarningALYRensselaer, Washington48 min
Jul 18, 1:29 PM EDTSevere Thunderstorm WarningGYXOxford, York46 min
Jul 18, 1:37 PM EDTSevere Thunderstorm WarningALYBennington53 min
Jul 18, 1:38 PM EDTSevere Thunderstorm WarningGYXFranklin, Oxford52 min
Jul 18, 1:43 PM EDTSevere Thunderstorm WarningBOXMiddlesex47 min
Jul 18, 1:57 PM EDTSevere Thunderstorm WarningGYXRockingham48 min
Jul 18, 2:00 PM EDTSevere Thunderstorm WarningBOXHillsborough15 min
Jul 18, 2:16 PM EDTSevere Thunderstorm WarningGYXCumberland, York44 min
Jul 18, 2:29 PM EDTSevere Thunderstorm WarningBOXEssex, Middlesex46 min
Jul 18, 2:39 PM EDTSevere Thunderstorm WarningGYXFranklin, Somerset66 min
Jul 18, 3:13 PM EDTSevere Thunderstorm WarningBOXMiddlesex32 min
Jul 18, 3:48 PM EDTSevere Thunderstorm WarningGYXFranklin, Somerset57 min
Jul 18, 4:02 PM EDTSevere Thunderstorm WarningGYXFranklin, Oxford58 min
Jul 18, 4:44 PM EDTSevere Thunderstorm WarningGYXYork61 min
Jul 18, 4:53 PM EDTSevere Thunderstorm WarningBOXWorcester27 min

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 3.5 hours before the alert went out and 90 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, Albany, NY at 12:00Z on 2000-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1088 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, Albany, NY at 12:00Z on 2000-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 square meters per square second.19395878Sfc1 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
1088 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
672 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
123 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.5

Open this sounding in Storm Lab

The text

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

000 
WWUS9 KMKC 181503
MKC WW 181457
MAZ000-MEZ000-NHZ000-NYZ000-VTZ000-CWZ000-182100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 588
STORM PREDICTION CENTER NORMAN OK
1057 AM EDT TUE JUL 18 2000

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

   MUCH OF MASSACHUSETTS                      
   WESTERN MAINE                              
   NEW HAMPSHIRE                      
   EASTERN NEW YORK                           
   VERMONT                            
   AND ADJACENT COASTAL WATERS                     

EFFECTIVE THIS TUESDAY MORNING AND AFTERNOON FROM 1130 AM UNTIL 500
PM EDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 105 STATUTE MILES
EAST AND WEST OF A LINE FROM 25 MILES SOUTH SOUTHWEST OF PITTSFIELD
MASSACHUSETTS TO 30 MILES NORTH NORTHWEST OF BERLIN NEW HAMPSHIRE.

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.

DISCUSSION...ISOLATED THUNDERSTORMS HAVE BEGUN TO DEVELOP OVER
EASTERN NY ALONG/AHEAD OF SURFACE COLD FRONT.  STORMS ARE EXPECTED
TO CONTINUE TO INTENSIFY THROUGH THE AFTERNOON...SPREADING EASTWARD
ACROSS NEW ENGLAND.  LARGE HAIL AND DAMAGING WINDS WILL BE POSSIBLE
WITH STRONGER CELLS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO S70
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 26030.


...HART

;420,0753 450,0733 450,0691 420,0712;

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 18, 1:30 PM EDTSevere Thunderstorm WatchSPCBarnstable, Bristol, Dukes, Nantucket, Plymouth6 hr

Nearby

Severe Thunderstorm Watches in New York, 2000Severe Thunderstorm Watches in Vermont, 2000Severe Thunderstorm Watches in New Hampshire, 2000Every 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.