Alert archive / New York / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 862
The Storm Prediction Center issued this severe thunderstorm watch at Aug 16, 2003, 1:25 PM EDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 16, 2003, 1:25 PM EDT (17:25 UTC)
- Expired
- Aug 16, 2003, 7:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 62 counties
Berkshire County, MA, Hampshire County, MA, Albany County, NY, Allegany County, NY, Broome County, NY, Cattaraugus County, NY, Chautauqua County, NY, Chemung County, NY, Chenango County, NY, Columbia County, NY, Cortland County, NY, Delaware County, NY, Fulton County, NY, Greene County, NY, Madison County, NY, Montgomery County, NY, Onondaga County, NY, Otsego County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Sullivan County, NY, Tioga County, NY, Tompkins County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Yates County, NY, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Bradford County, PA, Butler County, PA, Cameron County, PA, Clarion County, PA, Clearfield County, PA, Clinton County, PA, Crawford County, PA, Elk County, PA, Erie County, PA, Forest County, PA, Indiana County, PA, Jefferson County, PA, Lawrence County, PA, Lycoming County, PA, McKean County, PA, Mercer County, PA, Potter County, PA, Sullivan County, PA, Susquehanna County, PA, Tioga County, PA, Venango County, PA, Warren County, PA, Wayne County, PA, Wyoming County, PA, Bennington County, VT, Rutland County, VT, Windham County, VT
The radar
The Binghamton radar (KBGM), 114 km from the middle of the area, began a volume at 17:26 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
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 2:16 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 29 min |
| Aug 16, 2:18 PM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 57 min |
| Aug 16, 2:22 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 38 min |
| Aug 16, 2:32 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 58 min |
| Aug 16, 2:49 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 71 min |
| Aug 16, 3:19 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 26 min |
| Aug 16, 3:25 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Dutchess | 65 min |
| Aug 16, 3:48 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 72 min |
| Aug 16, 4:50 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Butler | 55 min |
| Aug 16, 5:25 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 50 min |
| Aug 16, 6:31 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 5.4 hours before the alert went out and 145 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.
- Mixed-layer CAPE
- 1388 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 794 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 161722
SEL2
SPC WW 161725
CTZ000-MAZ000-NYZ000-PAZ000-VTZ000-LEZ000-162300-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 862
NWS STORM PREDICTION CENTER NORMAN OK
125 PM EDT SAT AUG 16 2003
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHWEST CONNECTICUT
FAR WESTERN MASSACHUSETTS
UPSTATE NEW YORK
WESTERN AND NORTHERN PENNSYLVANIA
SOUTHERN VERMONT
LAKE ERIE
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 125 PM UNTIL
700 PM EDT.
HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 60 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 40 MILES SOUTH SOUTHEAST OF RUTLAND
VERMONT TO 35 MILES WEST SOUTHWEST OF FRANKLIN PENNSYLVANIA.
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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...WW 861...
DISCUSSION...THUNDERSTORMS DEVELOPING ALONG COLD FRONT AND
PREFRONTAL TROUGH CROSSING THE LWR LKS REGION EXPECTED TO POSE A
THREAT FOR LOCALLY DAMAGING WIND AND POSSIBLY HAIL AS SURFACE
HEATING CONTINUES ACROSS REGION. DEEP SHEAR SHOULD SLOWLY INCREASE
WITH TIME...SUPPORTING A FEW ORGANIZED BANDS/CLUSTERS...ESPECIALLY
IN SW NY/NW PA...AND IN E CNTRL NY.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.
A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION
VECTOR 29030.
...CORFIDI
420,0723 401,0802 420,0802 435,0723SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 12:51 PM EDT | Mesoscale Discussion | SPC | Berkshire | 114 min |
| Aug 16, 6:26 PM EDT | Mesoscale Discussion | SPC | Berkshire, Franklin, Hampden, Hampshire | 64 min |
| Aug 16, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Crawford, Greene, Lawrence, Mercer and 1 more | 6 hr |
| Aug 16, 6:53 PM EDT | Mesoscale Discussion | SPC | Greene, Washington | 97 min |
Nearby
Severe Thunderstorm Watches in New York, 2003Severe Thunderstorm Watches in Pennsylvania, 2003Severe Thunderstorm Watches in Vermont, 2003Every severe thunderstorm watch in 2003
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.