Alert archive / New York / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 15, NWS Buffalo, NY

June 27, 1993Genesee County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 27, 1993, 9:15 PM EDT for Genesee County, New York. It was in force for 45 min.

The area

The counties it named.

The facts

Issued: Jun 27, 1993, 9:15 PM EDT (01:15 UTC)
Expired: Jun 27, 1993, 10:00 PM EDT
In force: 45 min
Issued by: NWS Buffalo, NY
Area: Whole counties

County Genesee County, NY

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 1.3 hours before the alert went out and 42 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 691 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 1210 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 116 m²/s²
0-3 km storm-relative helicity: 199 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.4

Open this sounding in Storm Lab

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

Local storm report, Jun 27, 7:59 PM EDT, 1 hour 16 minutes before

PRELIMINARY STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
758 PM EDT SUN JUNE 27 1993

TIME/EDT                         LOCATION/EVENT

755 PM SUN...    3/4 INCH DIAMETER HAIL REPORTED BY SKYWARN OBSERVER
                 IN THE TOWN OF RIPLEY...SW CHAUTAUQUA COUNTY.

TAN

Local storm report, Jun 27, 7:59 PM EDT, 1 hour 16 minutes before

PRELIMINARY STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
758 PM EDT SUN JUNE 27 1993

TIME/EDT                         LOCATION/EVENT

755 PM SUN...    3/4 INCH DIAMETER HAIL REPORTED BY SKYWARN OBSERVER
                 IN THE TOWN OF RIPLEY...SW CHAUTAUQUA COUNTY.

TAN

Local storm report, Jun 27, 8:09 PM EDT, 1 hour 6 minutes before

PRELIMINARY STORM REPORT  UPDATED
NATIONAL WEATHER SERVICE BUFFALO NY
810 PM EDT SUN JUNE 27 1993

TIME/EDT                         LOCATION/EVENT

755 PM SUN...    3/4 INCH DIAMETER HAIL REPORTED BY SKYWARN OBSERVER
                 IN THE TOWN OF RIPLEY...SW CHAUTAUQUA COUNTY.

800 PM SUN...    SKYWARN OBSERVER IN THE TOWN OF RIPLEY MEASURED
                 HAIL DENSITY AT 86 PIECES PER SQUARE FOOT.

FISHER

Local storm report, Jun 27, 8:09 PM EDT, 1 hour 6 minutes before

PRELIMINARY STORM REPORT  UPDATED
NATIONAL WEATHER SERVICE BUFFALO NY
810 PM EDT SUN JUNE 27 1993

TIME/EDT                         LOCATION/EVENT

755 PM SUN...    3/4 INCH DIAMETER HAIL REPORTED BY SKYWARN OBSERVER
                 IN THE TOWN OF RIPLEY...SW CHAUTAUQUA COUNTY.

800 PM SUN...    SKYWARN OBSERVER IN THE TOWN OF RIPLEY MEASURED
                 HAIL DENSITY AT 86 PIECES PER SQUARE FOOT.

FISHER

Special weather statement, Jun 27, 8:35 PM EDT, 40 minutes before

NYZ001-002-003-004-005-021-022-280200-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE BUFFALO NY
735 PM EDT SUN JUN 27 1993

...A SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE CENTRAL
SOUTHERN TIER COUNTIES OF NEW YORK...BUT A SEVERE THUNDERSTORM WATCH
REMAINS IN EFFECT FOR THE WESTERN SOUTHERN TIER COUNTIES UNTIL 10 PM...

AT 835 PM...SHOWERS AND THUNDERSTORMS CONTINUED OVER EASTERN LAKE
ERIE...CHAUTAUQUA COUNTY...AND NORTHWESTERN PENNSYLVANIA. SOME HAIL
HAS BEEN PREVIOUSLY REPORTED WITH THESE THUNDERSTORMS. THIS ACTIVITY
IS STILL MOVING EAST AND SHOULD PASS OVER CHAUTAUQUA COUNTY DURING THE
NEXT HOUR.

OTHER SHOWERS AND THUNDERSTORMS WERE OCCURRING OVER ORLEANS COUNTY
AND NORTHWESTERN MONROE COUNTY AND IN ONTARIO BETWEEN LONDON AND
HAMILTON...OVER THE SOUTHERN END OF LAKE SIMCOE...AND NORTH OF
PETERBOROUGH.

MOVEMENT OF ALL OF THE ACTIVITY WAS EAST AT 35 MILES AN HOUR.

THE SHOWERS AND THUNDERSTORMS OVER LAKE ERIE WILL REACH CHAUTAUQUA
COUNTY BEFORE 9 PM. SHOWERS AND THUNDERSTORMS NOW OCCURRING OVER
BUFFALO ARE EXPECTED TO MOVE EAST OF THE METRO AREA SHORTLY.

REMINGTON

Special weather statement, Jun 27, 9:09 PM EDT, 6 minutes before

NYZ002-280200-

SPECIAL WEATHER STATEMENT - THUNDERSTORMS
NATIONAL WEATHER SERVICE ROCHESTER NY
905 PM EDT SUN JUN 27 1993

...THUNDERSTORMS MOVING ACROSS NORTHWEST MONROE COUNTY...

AT 900 PM RADAR INDICATED A CLUSTER OF THUNDERSTORMS OVER NORTHWESTERN
MONROE COUNTY AND ADJACENT LAKESHORE WATERS.  THESE STORMS ARE PRODUCING
FREQUENT CLOUD TO GROUND LIGHTNING ALONG WITH HEAVY DOWNPOURS FROM HAMLIN
EASTWARDS TO GREECE AND SOUTH TO SPENCERPORT.

THHESE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT ABOUT 35 MPH.

BASIL

The office that day

Everything else NWS Buffalo, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 27, 8:50 PM EDT	Severe Thunderstorm Warning	BUF	Erie	70 min
Jun 27, 9:35 PM EDT	Severe Thunderstorm Warning	BUF	Niagara, Orleans	55 min

Nearby

Severe Thunderstorm Warnings in New York, 1993 Every severe thunderstorm warning in 1993

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.