Alert archive / New York / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 12, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at May 1, 1991, 2:45 PM EDT for Erie County, Niagara County, New York. It was in force for 75 min. 2 reports 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
- May 1, 1991, 2:45 PM EDT (18:45 UTC)
- Expired
- May 1, 1991, 4:00 PM EDT
- In force
- 75 min
- Issued by
- NWS Buffalo, NY
- Area
- Whole counties
Counties Erie County, NY, Niagara County, NY
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 1, 2:46 PM EDT | Thunderstorm Wind 51 | Niagara, NY | |
| May 1, 3:30 PM EDT | Thunderstorm Wind 0 | Erie, 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, 6.8 hours before the alert went out and 5 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1088 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 214 m²/s²
- 0-3 km storm-relative helicity
- 296 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBUF 011856 RRA SVRBUF NYC029-063-011930- BULLETIN EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE BUFFALO NY 245 PM EST WED MAY 1 1991 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 400 PM EST FOR PEOPLE IN THE FOLLOWING NEW YORK COUNTIES... ERIE... NIAGARA... AND ADJACENT COASTAL WATERS. AT 240 PM BUFFALO RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM THE NIAGARA PENINSULA... SOUTH INTO EASTERN LAKE ERIE. THE LINE WAS MOVING EAST AT 40 MPH. WINDS GUSTED TO 57 MPH AT SAINT CATHERINES ONTARIO WITH THIS LINE. 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. ALL MARINE INTERESTS SHOULD REMAIN ALERT... SMALL BOATS T)AKE SHELTER IMMEDIATELY WEBBER
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, May 1, 2:34 PM EDT, 11 minutes before
NYZ001-021-022-002-003-004-005-012000- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BUFFALO NY 230 PM EDT WED MAY 1 1991 ...SEVERE THUNDERSTORM WATCH NUMBER 246 CONTINUES FOR ALL OF WESTERN AND CENTRAL NEW YORK UNTIL 7PM THIS EVENING... ...AT 230 PM...BUFFALO RADAR INDICATED A 40 MILE WIDE AREA OF SHOWERS AND THUNDERSTORMS WHICH STRETCHED FROM LAKE SIMCOE IN ONTARIO... SOUTH ACROSS TORONTO...HAMILTON...THE WESTERN HALF OF THE NIAGARA PENINSULA...EASTERN LAKE ERIE...AND ON INTO CHAUTAUQUA COUNTY OF NEW YORK AND NORTHWEST PENNSYLVANIA FROM ERIE TO MEADVILLE. A NARROW LINE OF THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...WAS EMBEDDED IN THIS AREA FROM TORONTO TO GRIMSBY TO DUNNVILLE. THE LEADING EDGE OF THE ACTIVITY WAS ABOUT 15 MILES WEST OF BUFFALO. MOVEMENT WAS NORTHEAST AT 50 MILES AN HOUR. [ ...SOME OF THESE STORMS MAY CONTAIN STRONG DAMAGING WINDS AND POSSIBLE HAIL. BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND BE PREPARED TO TAKE SHELTER IF WARRANTED. LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. MCLAUGHLIN
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 3:00 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Wyoming | 60 min |
| May 1, 3:00 PM EDT | Severe Thunderstorm Warning | BUF | Orleans | 60 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.