Alert archive / New York / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 30, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Oct 4, 1990, 9:05 PM EDT for Genesee County, Wyoming County, New York. It was in force for 55 min.
The area
The counties it named.
The facts
- Issued
- Oct 4, 1990, 9:05 PM EDT (01:05 UTC)
- Expired
- Oct 4, 1990, 10:00 PM EDT
- In force
- 55 min
- Issued by
- NWS Buffalo, NY
- Area
- Whole counties
Counties Genesee County, NY, Wyoming County, NY
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 1.1 hours before the alert went out and 41 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
- 443 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 968 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 175 m²/s²
- 0-3 km storm-relative helicity
- 184 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.2
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, Oct 4, 6:42 PM EDT, 2 hours 23 minutes before
NYZ001-021-042330- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BUFFALO NY 635 PM EDT THU OCT 4 1990 DO NOT USE AFTER 8PM... AT 630 PM... BUFFALO RADAR INDICATED A 20 MILE WIDE LINE OF SHOWERS AND THUNDERSTORMS...SOME WITH BRIEF HEAVY RAINS...OVER ONTARIO FROM LAKE SIMCOE...SOUTHWARD ACROSS METRO TORONTO...THE WESTERN END OF LAKE ONTARIO...HAMILTON...AND THE WESTERN PORTION OF THE NIAGARA PENINSULA. THE STRONGEST STORM WAS JUST WEST OF GRIMSBY. THIS LINE OF SHOWERS IS RACING EASTWARD AT 60 MILES AN HOUR AND HAS A HISTORY OF VERY STRONG WINDS OVER ONTARIO DURING THE PAST HOUR. A MARINE WARNING REMAINS IN EFFECT UNTIL 8PM ALONG THE NEW YORK SHORELINE OF LAKE ONTARIO FROM THE NIAGARA RIVER TO THIRTY MILE POINT. SFM
Special weather statement, Oct 4, 7:43 PM EDT, 1 hour 22 minutes before
NYZ001-021-050030- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BUFFALO NY 735 PM EDT THU OCT 4 1990 DO NOT USE AFTER 9PM... AT 730 PM... SHOWERS AND A FEW THUNDERSTORMS WERE OVER NIAGARA COUNTY OF NEW YORK AND THE ADJACENT COASTAL WATERS OF LAKE ONTARIO. THESE SHOWERS EXTENDED NORTHWARD ACROSS LAKE ONTARIO TO PORT HOPE. THIS SYSTEM HAS A HISTORY OF BRIEF VERY STRONG WINDS OVER ONTARIO DURING THE PAST FEW HOURS. THIS AREA CONTINUES TO RACE EASTWARD AT 50 MILES AN HOUR WITH A SLIGHT DECREASE IN INTENSITY AND COVERAGE DURING THE PAST HOUR. A MARINE WARNING REMAINS IN EFFECT ALONG THE NEW YORK SHORELINE OF LAKE ONTARIO FROM THE NIAGARA RIVER TO THIRTY MILE POINT UNTIL7 8PM. ELSEWHERE...SHOWERS WERE NEAR LONG POINT AND ALSO ABOUT 30 MILES NORTH OF LONDON. THESE SHOWERS WERE MOVING EAST AT ABOUT 40 MILES AN HOUR. SFM
Special weather statement, Oct 4, 8:41 PM EDT, 24 minutes before
NYZ001-021-022-050130- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BUFFALO NY 835 PM EDT THU OCT 4 1990 DO NOT USE AFTER 10PM... A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR ERIE COUNTY UNTIL 930 PM. AT 830 PM... BUFFALO RADAR INDICATED A LINE OF THUNDERSTORMS...SOME WITH HEAVY RAIN AND VERY STRONG WINDS...MOVING INTO THE GREATER BUFFALO AREA. THE STORMS COVERED WESTERN ERIE...WESTERN NIAGARA... AND NORTHERN CHAUTAUQUA COUNTIES OF NEW YORK...EASTERN LAKE ERIE AND THE EASTERN PORTION OF THE NIAGARA PENINSULA OF ONTARIO. THE STORMS ARE MOVING EAST AT 50 MILES AN HOUR AND SHOULD CROSS THE ENTIRE METRO AREA DURING THE NEXT HOUR. ELSEWHERE...LIGHT SHOWERS WERE OVfER ONTARIO JUST NORTHWEST OF TORONTO... AND OVER LAKE ONTARIO NORTH OF ROCHESTER. THESE SHOWERS ARE ALSO MOVING EAST AT 50 MILES AN HOUR. SFM
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 4, 8:35 PM EDT | Severe Thunderstorm Warning | BUF | Erie | 55 min |
| Oct 4, 10:50 PM EDT | Severe Thunderstorm Warning | BUF | Erie | 70 min |
Nearby
Severe Thunderstorm Warnings in New York, 1990Every severe thunderstorm warning in 1990
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.