Alert archive / New York / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 422
The Storm Prediction Center issued this severe thunderstorm watch at Jun 9, 2004, 7:55 PM EDT for 5 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 9, 2004, 7:55 PM EDT (23:55 UTC)
- Expired
- Jun 10, 2004, 1:00 AM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 40 counties
Barnstable County, MA, Bristol County, MA, Dukes County, MA, Hampden County, MA, Nantucket County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk 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, Dutchess County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Queens County, NY, Rockland County, NY, Suffolk County, NY, Sullivan County, NY, Ulster County, NY, Westchester County, NY, Monroe County, PA, Northampton County, PA, Pike County, PA, Wayne County, PA, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI
The radar
The Brookhaven radar (KOKX), 84 km from the middle of the area, began a volume at 23:57 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
1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 8:45 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess | 60 min |
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 11.9 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.
- Mixed-layer CAPE
- 192 J/kg
- Mixed-layer CIN
- -182 J/kg
- Mixed-layer LCL
- 1000 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 117 m²/s²
- 0-3 km storm-relative helicity
- 109 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 |
|---|---|---|---|---|
| Jun 9, 4:45 PM EDT | Severe Thunderstorm Watch | SPC | Berkshire, Essex, Franklin, Hampshire, Middlesex, Worcester | 5 hr |
| Jun 9, 6:28 PM EDT | Mesoscale Discussion | SPC | Franklin | 62 min |
| Jun 9, 6:54 PM EDT | Mesoscale Discussion | SPC | Franklin | 96 min |
| Jun 9, 10:11 AM EDT | Mesoscale Discussion | SPC | Clinton, Essex, Franklin, Hamilton, Herkimer, Jefferson and 3 more | 2 hr |
| Jun 9, 11:20 AM EDT | Severe Thunderstorm Watch | SPC | Cayuga, Essex, Franklin, Fulton, Hamilton, Herkimer and 12 more | 6 hr |
| Jun 9, 1:00 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 2 more | 5 hr |
| Jun 9, 2:41 PM EDT | Mesoscale Discussion | SPC | Cayuga, Clinton, Essex, Franklin, Fulton, Hamilton and 13 more | 94 min |
| Jun 9, 3:44 PM EDT | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 2 more | 91 min |
| Jun 9, 4:21 PM EDT | Mesoscale Discussion | SPC | Cayuga, Clinton, Essex, Franklin, Fulton, Hamilton and 13 more | 54 min |
| Jun 9, 5:27 PM EDT | Mesoscale Discussion | SPC | Cattaraugus, Chautauqua | 63 min |
| Jun 9, 5:50 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Cattaraugus, Chautauqua | 4 hr |
Nearby
Severe Thunderstorm Watches in New York, 2004Severe Thunderstorm Watches in New Jersey, 2004Severe Thunderstorm Watches in Connecticut, 2004Every severe thunderstorm watch in 2004
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.