Alert archive / New York / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 20, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jul 5, 1991, 3:29 PM EDT for Niagara County, New York. It was in force for 61 min.
The area
The counties it named.
The facts
- Issued
- Jul 5, 1991, 3:29 PM EDT (19:29 UTC)
- Expired
- Jul 5, 1991, 4:30 PM EDT
- In force
- 61 min
- Issued by
- NWS Buffalo, NY
- Area
- Whole counties
County Niagara County, NY
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.5 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
- 580 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 640 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 117 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KBUF 051934
SVRBUF
NYC063-052030-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
329 PM EDT FRI JUL 5 1991
THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 430 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN NEW YORK
...NIAGARA
AT 330PM A SEVERE THUNDERSTORM WAS NEAR SAINT CATHERINE/S ONTARIO
MOVING EAST AT 25 MPH. THE THUNDERSTORM MAY PRODUCE DAMAGING WINDS...
HEAVY RAIN AND LARGE HAIL. THE THUNDERSTORM SHOULD REACH WESTERNMOST
NIAGARA COUNTY BY 345 PM.
IF YOU ARE ON A LAKE OR RIVER...HEAD TO SHORE.
GOLFER/S...FISHERMAN AND OTHER OUTDOOR ENTHUSIASTS SHOULD
STAY AWAY FROM TREES AND OPEN AREAS. FIND SHELTER IN A SUITABLE
BUILDING.
NNNNWhat 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 5, 12:41 PM EDT, 2 hours 48 minutes before
NYZ002-151700- SPECIAL WEATHER STATEMENT - THUNDERSTORMS NATIONAL WEATHER SERVICE ROCHESTER NY 1129 PM EDT SAT JUN 15 1991 ...THUNDERSTORMS OVER MONROE COUNTY... AT 1240 PM EDT WEATHER SERVICE RADAR INDICATED THUNDERSTORMS OVER MONROE COUNTY SOUTH OF THE AIRPORT. THE THUNDERSTORMS WERE MOVING EAST AT AROUND 25 MP. THESE THUNDERSTORMS MAY CONTAIN HEAVY RAINS...GUSTY WINDS...FREQUENT LIGHTNING ...AND SMALL HAIL. STAY TUNED TO NOAA WEATHER RADIO0 FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. CURLE
Special weather statement, Jul 5, 1:44 PM EDT, 1 hour 45 minutes before
NYZ001-021-022-002-003-004-005-051845-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE BUFFALO NY
145 PM EDT FRI JUL 5 1991
...SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF WESTERN NEW YORK UNTIL
6PM EDT...
AT 130 PM...THUNDERSTORMS WITH FREQUENT LIGHTNING...HEAVY DOWNPOURS AND
GUSTY WINDS WERE LOCATED IN CHAUTAUQUA COUNTY JUST WEST OF SINCLAIRVILLE
...SOUTHERN ERIE COUNTY NEAR GOWANDA...NORTHERN ONTARIO COUNTY NEAR
VICTOR AND OVER PARTS OF WESTERN LAKE ONTARIO. SHOWERS WERE ALSO SCATTERED
ACROSS PARTS OF GENESEE AND SOUTHERN ERIE COUNTY AND NORTHWEST PENNSYLVANIA.
SHOWERS AND THUNDERSTORMS WERE WIDELY SCATTERED ACROSS SOUTHERN ONTARIO FROM
LONDON NORTHEAST TO PETERBOROUGH.
RRM [ ]Special weather statement, Jul 5, 2:44 PM EDT, 45 minutes before
NYZ001-021-022-002-003-004-005-051945-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE BUFFALO NY
245 PM EDT FRI JUL 5 1991
...SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF WESTERN NEW YORK UNTIL
6PM EDT...
AT 230 PM...THUNDERSTORMS WITH FREQUENT LIGHTNING...HEAVY DOWNPOURS AND
GUSTY WINDS WERE LOCATED IN CHAUTAUQUA COUNTY JUST SOUTH OF ARCADE...WAYNE
COUNTY NEAR NEWARK...NIAGARA COUNTY JUST NORTH OF LOCKPORT AND OVER CENTRAL
LAKE ONTARIO. SHOWERS AND THUNDERSTRORMS WERE ALSO SCATTERED ACROSS THE
GENESEE RIVER VALLEY...CHAUTAUQUA COUNTY AND PARTS OF NIAGARA...ORLEANS
AND MONROE COUNTY. OTHER SHOWERS AND THUNDERSTORMS WERE WIDELY SCATTERED
ACROSS NORTHWEST PENNSYLVANIA AND IN SOUTHERN ONTARIO FROM LONDON ACROSS
PETERBOROUGH TO WELLINGTON. A THUNDERSTORM WITH FREQUENT LIGHTNING AND
HEAVY RAIN WAS 20 MILES WEST OF HAMILTON ONTARIO.
THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 25 MILES AN HOUR.
RRMSpecial weather statement, Jul 5, 3:13 PM EDT, 16 minutes before
NYZ002-152000- SPECIAL WEATHER STATEMENT - THUNDERSTORMS NATIONAL WEATHER SERVICE ROCHESTER NY 310 PM EDT FRI JUL 5 1991 ...THUNDERSTORMS OVER ONTARIO COUNTY... AT 310 PM EDT WEATHER SERVICE RADAR INDICATED THUNDERSTORMS OVER SOUTH WESTERN WAYNE COUNTY. THE THUNDERSTORMS WERE MOVING NORTH EAST AT 20 TO 25 MPH. SMALL HAIL HAS BEEN REPORTED WITH THESE THUNDERSTORMS. THESE THUNDERSTORMS MAY CONTAIN HEAVY RAINS...GUSTY WINDS...FREQUENT LIGHTNINGR ...AND SMALL HAIL. STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. CURLE
Special weather statement, Jul 5, 3:14 PM EDT, 15 minutes before
NYZ002-152000- SPECIAL WEATHER STATEMENT - THUNDERSTORMS NATIONAL WEATHER SERVICE ROCHESTER NY 310 PM EDT FRI JUL 5 1991 ...THUNDERSTORMS MOVING INTO WAYNE COUNTY... AT 310 PM EDT WEATHER SERVICE RADAR INDICATED THUNDERSTORMS OVER SOUTH WESTERN WAYNE COUNTY. THE THUNDERSTORMS WERE MOVING NORTH EAST AT 20 TO 25 MPH. SMALL HAIL HAS BEEN REPORTED WITH THESE THUNDERSTORMS. THESE THUNDERSTORMS MAY CONTAIN HEAVY RAINS...GUSTY WINDS...FREQUENT LIGH|TNING ...AND SMALL HAIL. STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. CURLE
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 4:25 PM EDT | Severe Thunderstorm Warning | BUF | Niagara | 65 min |
Nearby
Severe Thunderstorm Warnings in New York, 1991Every severe thunderstorm warning in 1991
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.