Alert archive / New York / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 21, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jul 9, 1999, 6:54 PM EDT for Cattaraugus County, Erie County, New York. It was in force for 46 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
- Jul 9, 1999, 6:54 PM EDT (22:54 UTC)
- Expired
- Jul 9, 1999, 7:40 PM EDT
- In force
- 46 min
- Issued by
- NWS Buffalo, NY
- Area
- Whole counties
Counties Cattaraugus County, NY, Erie County, NY
The radar
The Buffalo radar (KBUF), 49 km from the middle of the area, began a volume at 22:55 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 |
|---|---|---|---|
| Jul 9, 7:00 PM EDT | Thunderstorm Wind | Yorkshire, NY | |
| Jul 9, 7:10 PM EDT | Thunderstorm Wind | Springville, 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 |
|---|---|---|---|
| Jul 9, 6:45 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 10.9 hours before the alert went out and 47 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1155 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 211 m²/s²
- 0-3 km storm-relative helicity
- 519 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBUF 092256 RRA SVRBUF NYC009-029-092340- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BUFFALO NY 654 PM EDT FRI JUL 9 1999 THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CATTARAUGUS COUNTY IN WESTERN NEW YORK SOUTHERN ERIE COUNTY IN WESTERN NEW YORK * UNTIL 740 PM EDT * AT 6:50 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM LOCATED 10 MILES NORTH OF PERRYSBURG WITH ANOTHER INTENSE STORM NEAR SALAMANCA. THE STORMS ARE MOVING EAST AT 35 MILES AN HOUR. * THE SEVERE THUNDERSTORM WILL BE NEAR SPRINGVILLE AT 7:30 PM WITH ANOTHER STRONG STORM NEAR OLEAN BY 7:15 PM.... IF YOU ARE IN THESE AREAS...SEEK SAFETY IN A SMALL INTERIOR ROOM AWAY FROM WINDOWS. A BASEMENT OFFERS THE BEST PROTECTION. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH AND/OR HAIL 3/4 INCH OR LARGER. FOR YOUR PROTECTION FROM POTENTIALLY DAMAGING WINDS...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS MAY ALSO CAUSE RAPID FLOODING OF SMALL STREAMS AND POOR DRAINAGE AREAS. DON'T ATTEMPT TO CROSS FLOODED ROADWAYS.
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 6:34 PM EDT | Tornado Warning | BUF | Chautauqua | 36 min |
| Jul 9, 7:24 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 51 min |
| Jul 9, 7:42 PM EDT | Tornado Warning | BUF | Cattaraugus | 48 min |
Nearby
Severe Thunderstorm Warnings in New York, 1999Every severe thunderstorm warning in 1999
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.