Alert archive / New York / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 197
The Storm Prediction Center issued this severe thunderstorm watch at May 1, 2003, 1:30 PM EDT for 30 counties in New York; 21 counties in Pennsylvania. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 1, 2003, 1:30 PM EDT (17:30 UTC)
- Expired
- May 1, 2003, 7:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 51 counties
Allegany County, NY, Cattaraugus County, NY, Cayuga County, NY, Chautauqua County, NY, Chemung County, NY, Chenango County, NY, Cortland County, NY, Erie County, NY, Fulton County, NY, Genesee County, NY, Hamilton County, NY, Herkimer County, NY, Jefferson County, NY, Lewis County, NY, Livingston County, NY, Madison County, NY, Monroe County, NY, Oneida County, NY, Onondaga County, NY, Ontario County, NY, Oswego County, NY, Schuyler County, NY, Seneca County, NY, St. Lawrence County, NY, Steuben County, NY, Tioga County, NY, Tompkins County, NY, Wayne County, NY, Wyoming County, NY, Yates County, NY, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Cameron County, PA, Clarion County, PA, Clearfield County, PA, Crawford County, PA, Elk County, PA, Erie County, PA, Forest County, PA, Indiana County, PA, Jefferson County, PA, Lawrence County, PA, McKean County, PA, Mercer County, PA, Potter County, PA, Tioga County, PA, Venango County, PA, Warren County, PA, Washington County, PA
The radar
The Buffalo radar (KBUF), 79 km from the middle of the area, began a volume at 17:30 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 |
|---|---|---|---|---|
| May 1, 1:34 PM EDT | Severe Thunderstorm Warning | BUF | Monroe, Wayne | 41 min |
| May 1, 1:39 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Livingston, Wyoming | 51 min |
| May 1, 2:40 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus | 35 min |
| May 1, 3:07 PM EDT | Severe Thunderstorm Warning | BUF | Lewis | 23 min |
| May 1, 3:28 PM EDT | Severe Thunderstorm Warning | ALY | Herkimer | 47 min |
| May 1, 3:29 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Onondaga | 61 min |
| May 1, 3:49 PM EDT | Severe Thunderstorm Warning | ALY | Hamilton | 56 min |
| May 1, 4:12 PM EDT | Severe Thunderstorm Warning | BGM | Madison, Oneida | 48 min |
| May 1, 4:13 PM EDT | Severe Thunderstorm Warning | ALY | Herkimer | 47 min |
| May 1, 4:42 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Hamilton | 63 min |
| May 1, 5:00 PM EDT | Severe Thunderstorm Warning | ALY | Herkimer | 45 min |
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, 5.5 hours before the alert went out and 76 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
- 1 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 790 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 12:41 PM EDT | Mesoscale Discussion | SPC | Allegany, Broome, Cattaraugus, Cayuga, Chautauqua, Chemung and 20 more | 3 hr |
| May 1, 4:10 PM EDT | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Cayuga, Chemung, Chenango, Cortland and 14 more | 95 min |
| May 1, 4:25 PM EDT | Severe Thunderstorm Watch | SPC | Clinton, Essex, Franklin, Rensselaer, Saratoga, Schenectady and 2 more | 5 hr |
| May 1, 6:02 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Blair, Cumberland, Dauphin and 13 more | 3 hr |
Nearby
Severe Thunderstorm Watches in New York, 2003Severe Thunderstorm Watches in Pennsylvania, 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.