Alert archive / New York / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 30, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Aug 15, 1991, 1:15 PM EDT for Erie County, Genesee 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
- Aug 15, 1991, 1:15 PM EDT (17:15 UTC)
- Expired
- Aug 15, 1991, 2:15 PM EDT
- In force
- 60 min
- Issued by
- NWS Buffalo, NY
- Area
- Whole counties
Counties Erie County, NY, Genesee County, NY
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 15, 1:30 PM EDT | Hail 0.75 | 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, 5.3 hours before the alert went out and 18 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
- 123 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 1199 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -31 m²/s²
- 0-3 km storm-relative helicity
- -13 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 151720 COR SVRBUF NYC029-073-037-151815- BULLETIN EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTION NATIONAL WEATHER SERVICE BUFFALO NY 119 PM EDT THU AUG 15 1991 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 215 PM EDT FOR PEOPLE IN THE FOLLOWING NEW YORK COUNTIES... GENESEE...ERIE AND SOUTHWEST ORLEANS COUNTY. BUFFALO WEATHER RADAR DETECTED A LINE OF SEVERE THUNDERSTORMS EXTENDING FROM ORLEANS COUNTY...SOUTHWEST TO CENTRAL ERIE COUNTY. THESE THUNDERSTORMS WRE MOVING SOUTHEAST AT 15 MILES AN HOUR. 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. PACE
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 15, 11:41 AM EDT, 1 hour 34 minutes before
NYZ001-021-022-002-003-004-005-141630- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BUFFALO NY 1130 AM EDT THU AUG 15 1991 ...HEAVY RAINS MOVING TOWARDS WESTERN NEW YORK... AT 1130 AM...A NEWLY FORMED LINE OF THUNDERSTORMS...SOME WITH VERY HEAVY RAIN AND POSSIBLY HAIL...EXTENDED FROM PETERBOROUGH ONTARIO SOUTHEAST ACROSS WESTERN LAKE ONTARIO TO 30 MILES SOUTH OF HAMILTON. MOVEMENT OF THE LINE WAS NOT DETERMINED. A LARGE AREA OF THUNDERSTORMS AND SHOWERS...SOME HEAVY...CONTINUED ACROSS ONTARIO IN A 65 MILE WIDE AREA FROM LONDON EAST TO NEAR HAMILTON. MOVEMENT WAS SOUTHEAST AT ONLY 5 MILES AN HOUR. BECAUSE OF THE INTENSITY OF RAIN ALONG WITH THE SLOW MOVEMENTM OF THESE STORMS...POOR DRAINAGE FLOODING CAN BE EXPECTED IN SOME AREAS. PUKAJLO
Special weather statement, Aug 15, 12:36 PM EDT, 39 minutes before
NYZ001-021-022-002-003-004-005-141730- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BUFFALO NY 1225 PM EDT THU AUG 15 1991 ...HEAVY RAINS MOVING TOWARDS WESTERN NEW YORK... AT 1225 PM...A LINE OF THUNDERSTORMS...SOME WITH VERY HEAVY RAIN AND HAIL...EXTENDED FROM PETERBOROUGH ONTARIO SOUTHWEST TO JUST SOUTH OF GRIMSBY ON THE NIAGARA PENINSULA. MOVEMENT WAS SOUTHEAST AT 12 MILES AN HOUR. A LARGE AREA OF THUNDERSTORMS AND SHOWERS...SOME HEAVY...CONTINUED ACROSS ONTARIO IN A 60 MILE WIDE AREA FROM LONDON EAST TO NEAR HAMILTON. MOVEMENT WAS SOUTHEAST AT ONLY 5 MILES AN HOUR. A NEWLY FORMED THUNDERSTORM WITH HEAVY RAIN WAS JUST NORTH OF LOCKPORT. OVER PENNSYLVANIA A NEWLY FORMED AREA OF THUNDERSTORMS AND SHOWERS WAS LOCATED FROM 50 MILES SOUTH OF ERIE TO 20 MILES SOUTH OF WARREN. DUE TO THE VERY HEAVY PRECIPITATION WITH THESE STORMS AND THEIR SLOW RATE OF MOVEMENT POOR DRAINAGE FLOODING CAN BE EXPECTED UNDER THESE STORMS. PUKAJLO
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 1:15 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.