Alert archive / New York / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 18, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jul 18, 1986, 10:15 PM EDT for Cattaraugus County, Chautauqua County, New York. It was in force for 60 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 18, 1986, 10:15 PM EDT (02:15 UTC)
- Expired
- Jul 18, 1986, 11:15 PM EDT
- In force
- 60 min
- Issued by
- NWS Buffalo, NY
- Area
- Whole counties
Counties Cattaraugus County, NY, 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 18, 10:50 PM 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 00:00Z, 2.3 hours before the alert went out and 78 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
- 698 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 1256 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 155 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 3.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBUF 190211 SVRBUF NYC009-013-LEZ000-190215- BULLETIN IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BUFFALO NY 1015 PM EDT FRI JUL 18 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1115 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES IN WESTERN NEW YORK...CHAUTAUQUA AND CATTARAUGUS AT 930 PM EDT BUFFALO RADAR INDICATED SEVERE THUNDERSTORMS OVER CHAUTAUQUA AND CATTARAUGUS COUNTIES. THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 35 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. LAZARUS
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 18, 6:27 PM EDT, 3 hours 48 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCHESTER NY 627 PM EDT FRI JUL 18 1986 ...LOCALLY HEAVY RAIN IS LIKELY ACROSS SOUTHWEST MONROE...AND ALL OF LIVINGSTON COUNTY THIS EVENING... LOW LYING ROADS...CULVERTS...SMALL STREAMS AND OTHER POOR DRAINAGE AREAS MAY BECOME FLOODED. PEOPLE IN LETCHWORTH AND STONY BROOK STATE PARKS SHOULD BE PARTICULARLY ALERT FOR RAPIDLY RISING WATER. SOME HAIL MAY ALSO ACCOMPANY THE HEAVY RAIN. GEE
Special weather statement, Jul 18, 8:19 PM EDT, 1 hour 56 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCHESTER NY 815 PM EDT FRI JUL 18 1986 ...LOCALLY HEAVY RAIN IS POSSIBLE OVER WESTERN NEW YORK TONIGHT... LOW LYING ROADS...CULVERTS...SMALL STREAMS AND OTHER POOR DRAINAGE AREAS MAY BECOME FLOODED. PEOPLE IN LETCHWORTH AND STONY BROOK STATE PARKS SHOULD BE PARTICULARLY ALERT FOR RAPID RISES IN STREAMS AND RIVERS. LW
Special weather statement, Jul 18, 8:31 PM EDT, 1 hour 44 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BUFFALO NY 830 PM EDT FRI JUL 18 1986 ...THUNDERSTORMS WITH HEAVY RAIN CAN BE EXPECTED OVER SOUTHERN ERIE.. AND PORTIONS OF CHAUTAUQUA AND CATTARAUGUS COUNTIES THIS EVENING... PERSONS IN THESE AREAS MAY EXPECT HEAVY RAINS WITH POSSIBLE UNDERPASS AND POOR DRAINAGE AREA FLOODING. FREQUENT LIGHTNING MAY ACCOMPANY THESE THUNDERSTORMS. AT 815 PM EDT ERIE PA. RADAR INDICATED THUNDERSTORMS WITH HEAVY RAIN FROM BUFFALO..TO JUST NORTHWEST OF DUNKIRK NEW YORK. THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 35 TO 40 MPH. FUTHER STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT. LAZARUS
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 9:05 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua | 60 min |
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.