Alert archive / New York / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 19, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jul 20, 1986, 9:25 AM EDT for Chautauqua County, New York. It was in force for 65 min. 1 report 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 20, 1986, 9:25 AM EDT (13:25 UTC)
- Expired
- Jul 20, 1986, 10:30 AM EDT
- In force
- 65 min
- Issued by
- NWS Buffalo, NY
- Area
- Whole counties
County Chautauqua County, NY
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 20, 10:00 AM EDT | Thunderstorm Wind 0 | Chautauqua, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 1.4 hours before the alert went out and 91 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
- 2381 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 552 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 174 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 5.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBUF 201326 SVRBUF NYC013-201430- BULLETIN IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BUFFALO NY 925 AM EDT SUN JUL 20 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 AM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES IN WESTERN NEW YORK...CHAUTAUQUA AT 920 AM..WEATHER RADAR INDICATED A SEVERE THUNDERSTORM OVER THE SOUTHWEST CORNER OF CHAUTAUQUA COUNTY. THE STORM WAS MOVING EAST AT 25 MPH. BE ON THE ALERT FOR THUNDERSTORMS ACCOMPANIED BY FREQUENT LIGHTNING.. STRONG DAMAGING WINDS AND LARGE HAIL. LOCALLY HEAVY RAIN MAY ALSO CAUSE DRAINAGE FLOODING. IF THREATENING WEATHER APPROACHES GO TO A SAFE PLACE IMMEDIATELY. IN HOMES A BASEMENT OR INTERIOR ROOM IS THE SAFEST LOCATION. NIZIOL
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jul 20, 8:43 AM EDT, 42 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCHESTER NY 840 AM EDT SUN JUL 20 1986 ...HEAVY THUNDERSTORMS MOVING INTO THE ROCHESTER AREA... AT 835 AM EDT THIS SUNDAY MORNING WEATER SERVICE RADAR INDICATED HEAVY THUNDERSTORMS JUST WEST OF ROCHESTER IN MONROE COUNTY MOVING EAST AT 25 MILES AN HOUR. HEAVY RAINS WERE EXPERIENCED WITH THESE STORMS IN THE BATAVIA AREA AND CAN BE EXPECTED IN THE ROCHESTER AREA DURING THE HOUR. STAY TUNED TO NOAA WEATHER RADIO..OR LOCAL RADIO STATIONS FOR FURTHER STATEMENTS OR POSSIBLE WARNINGS. PH
Nearby
Severe Thunderstorm Warnings in New York, 1986Every severe thunderstorm warning in 1986
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.