Alert archive / New York / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 20, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Aug 1, 1986, 8:30 PM EDT for Niagara County, New York. It was in force for 30 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
- Aug 1, 1986, 8:30 PM EDT (00:30 UTC)
- Expired
- Aug 1, 1986, 9:00 PM EDT
- In force
- 30 min
- Issued by
- NWS Buffalo, NY
- Area
- Whole counties
County Niagara 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 |
|---|---|---|---|
| Aug 1, 8:30 PM EDT | Hail 1.5 | Niagara, 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, 0.5 hours before the alert went out and 27 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
- 1721 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 947 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.3
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Aug 1, 2:37 PM EDT, 5 hours 53 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY CORRECTED NATIONAL WEATHER SERVICE BUFFALO NY 230 PM EDT FRI AUG 1 1986 ...FLOOD WARNING IN EFFECT FOR CHAUTAUQUA AND CATTARAUGUS COUNTIES... ...FLOOD WATCH IN EFFECT FOR SOUTHERN ERIE COUNTY... A COLD FRONT TO THE WEST OF BUFFALO CONTINUES TO PRODUCE SHOWERS AND THUNDERSTORMS ACROSS WESTERN NEW YORK. THUNDERSTORMS WITH HEAVY RAIN WERE NEAR WESTFIELD MAYVILLE AND CHAUTAUQUA NEW YORK. HEAVY RAINFALL IN THE LAST 24 HOURS IS CAUSING PROBLEMS IN SOUTHERN ERIE AND PORTIONS OF CHAUTAUQUA AND CATTARAUGUS COUNTIES. SHOWERS THIS AFTERNOON MAY PRODUCE ADDITIONAL FLOODING OF STREAMS AND LOW LYING AREAS. ALL INTERESTS IN THESE AREAS SHOULD REMAIN ALERT FOR POSSIBLE FLOODING CONDITIONS. SHOWERS AND THUNDERSTORMS WERE OVER CHAUTAUQUA..CATTARAUGUS..WYOMING.. AND ALLEGANY COUNTIES. SHOWERS AND THUNDERSTORMS WERE OVER CENTRAL NEW YORK FROM THE GENESEE RIVER TO SYRACUSE AND WATERTOWN. THUNDERSTORMS WERE OVER PENNSYLVANIA EAST OF BRADFORD. SOME OF THESE SHOWERS AND THUNDERSTORMS MAY CONTAIN HEAVY DOWNPOURS AND FREQUENT LIGHTNING. THESE SHOWERS AND THUNDERSTORMS WERE MOVING NORTHEAST AT 25 MILES AN HOUR. FURTHER STATEMENTS WILL BE ISSUED= AS NECESSARY. LAZARUS
Special weather statement, Aug 1, 3:41 PM EDT, 4 hours 49 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BUFFALO NY 330 PM EDT FRI AUG 1 1986 ...FLOOD WATCH IN EFFECT UNTIL 9 PM EDT FOR CHAUTAUQUA..CATTARAUGUS.. ALLEGANY AND SOUTHERN ERIE COUNTIES... A COLD FRONT TO THE WEST OF BUFFALO CONTINUES TO PRODUCE SHOWERS AND THUNDERSTORMS ACROSS WESTERN NEW YORK. A THUNDERSTORM WITH HEAVY RAIN WAS EAST OF JAMESTOWN NEW YORK. HEAVY RAINFALL IN THE LAST 24 HOURS IS CAUSING PROBLEMS IN SOUTHERN ERIE AND PORTIONS OF CHAUTAUQUA..CATTARAUGUS AND ALLEGANY COUNTIES. SHOWERS THIS AFTERNOON MAY PRODUCE ADDITIONAL FLOODING OF STREAMS AND LOW LYING AREAS. ALL INTERESTS IN THESE AREAS SHOULD REMAIN ALERT FOR POSSIBLE FLOODING CONDITIONS. SHOWERS AND THUNDERSTORMS WERE OVER CHAUTAUQUA..CATTARAUGUS..ALLEGANY AND SOUTHERN LIVINGSTON COUNTIES. SHOWERS AND THUNDERSTORMS ALSO WERE DETECTED FROM THE CENTRAL SOUTHERN TIER COUNTIES..ACROSS THE FINGER LAKES TO EASTERN LAKE ONTARIO. HEAVY THUNDERSTORMS WERE WIDELY SCATTERED OVER NORTHEAST OHIO..NORTHWEST PENNSYLVANIA AND SOUTHERN ONTARIO. SOME OF THESE SHOWERS AND THUNDERSTORMS MAY CONTAIN HEAVY DOWNPOURS AND FREQUENT LIGHTNING. THESE SHOWERS AND THUNDERSTORMS WERE MOVING NORTHEAST AT 25 MILES AN HOUR. FURTHER STATEMENTS WILL BE ISSUED AS NECESSARY. LAZARUS
Special weather statement, Aug 1, 5:48 PM EDT, 2 hours 42 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BUFFALO NY 530 PM EDT FRI AUG 1 1986 ...FLOOD WATCH IN EFFECT UNTIL 9 PM EDT FOR CHAUTAUQUA..CATTARAUGUS.. ALLEGANY AND SOUTHERN ERIE COUNTIES... A COLD FRONT TO THE WEST OF BUFFALO CONTINUES TO PRODUCE SHOWERS AND THUNDERSTORMS ACROSS WESTERN NEW YORK. HEAVY RAINFALL IN THE LAST 24 HOURS IS CAUSING PROBLEMS IN SOUTHERN ERIE AND PORTIONS OF CHAUTAUQUA..CATTARAUGUS AND ALLEGANY COUNTIES. SHOWERS THIS AFTERNOON MAY PRODUCE ADDITIONAL FLOODING OF STREAMS AND LOW LYING AREAS. ALL INTERESTS IN THESE AREAS SHOULD REMAIN ALERT FOR POSSIBLE FLOODING CONDITIONS. THUNDERSTORMS EXTENDED ACROSS THE NIAGARA PENINSULA..TO NORTH OF TORONTO. A VERY STRONG THUNDERSTORM WAS 10 MILES NORTH OF TORONTO. ELSEWHERE..SHOWERS AND THUNDERSTORMS EXTENDED ACROSS NORTHERN PENNSYLVANIA..AND THE SOUTHERN TIER OF NEW YORK FROM BINGHAMTON TO SYRACUSE. SOME OF THESE SHOWERS AND THUNDERSTORMS MAY CONTAIN HEAVY DOWNPOURS AND FREQUENT LIGHTNING. THESE SHOWERS AND THUNDERSTORMS WERE MOVING NORTHEAST AT 25 MILES AN HOUR. FURTHER STATEMENTS WILL BE ISSUED AS NECESSARY. MH
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.