Alert archive / New York / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 106, NWS Buffalo, NY

June 30, 1998Ontario County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 30, 1998, 2:59 PM EDT for Ontario County, New York. It was in force for 61 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
Jun 30, 1998, 2:59 PM EDT (18:59 UTC)
Expired
Jun 30, 1998, 4:00 PM EDT
In force
61 min
Issued by
NWS Buffalo, NY
Area
Whole counties

County Ontario County, NY

The radar

The Buffalo radar (KBUF), 118 km from the middle of the area, began a volume at 18:58 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Jun 30, 3:30 PM EDTThunderstorm WindCanandaigua, NY
Jun 30, 3:50 PM EDTThunderstorm WindPhelps, 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 30, 1:30 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.0 hours before the alert went out and 114 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-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 1998-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 1998-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
3 J/kg
Mixed-layer CIN
-106 J/kg
Mixed-layer LCL
865 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
122 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

605 
WUUS1 KBUF 301859 RRA
SVRBUF
NYC069-302000-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
259 PM EDT TUE JUN 30 1998

THE NATIONAL WEATHER SERVICE IN BUFFALO NY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ONTARIO COUNTY IN WESTERN NEW YORK

* UNTIL 400 PM EDT

* AT 255 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SEVERE THUNDERSTORM NEAR VICTOR...MOVING SOUTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CANANDAIGUA AT 315 PM EDT
  GENEVA AT 330 PM EDT

IF YOU ARE IN THESE AREAS...SEEK SAFETY IN A SMALL INTERIOR ROOM
AWAY FROM WINDOWS. A BASEMENT OFFERS THE BEST PROTECTION.

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 30, 10:32 AM EDT, 4 hours 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NEW YORK
1032 AM EDT TUE JUN 30 1998

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0750 AM    LYNDONVILLE               NY   WIND DAMAGE
06/30/98   ORLEANS                        TREE AND WIRES DOWN
                                          SHERIFFS DEPT.
Special weather statement, Jun 30, 11:36 AM EDT, 3 hours 23 minutes before
NYZ001>008-010>014-019>021-010000-

SEVERE WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE BUFFALO NY
1136 AM EDT TUE JUN 30 1998

...SEVERE THUNDERSTORMS POSSIBLE ACROSS THE AREA THIS AFTERNOON...

THE NATIONAL SEVERE STORMS FORECAST CENTER INDICATES THERE IS A
SLIGHT RISK FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS ACROSS THE
AREA THIS AFTERNOON.

AN APPROACHING COLD FRONT WILL TRIGGER SHOWERS AND THUNDERSTORMS
ACROSS THE REGION THIS AFTERNOON. SOME OF THESE THUNDERSTORMS COULD
REACH SEVERE LIMITS. THE GREATEST THREAT IS THE POSSIBILITY OF
DAMAGING WINDS. LARGE HAIL IS ALSO POSSIBLE.

VERY HUMID CONDITIONS CONTINUE ACROSS THE AREA AND ANY THUNDERSTORMS
THAT DEVELOP WILL BE CAPABLE OF PRODUCING TORRENTIAL DOWNPOURS.
RAINFALL AMOUNTS OF UP TO 2 INCHES AN HOUR ARE POSSIBLE. A FLASH
FLOOD WATCH REMAINS IN EFFECT THIS AFTERNOON FOR THE ENTIRE REGION.

SKYWARN ACTIVATION MAY BE NEEDED THIS AFTERNOON.

REMEMBER...SEVERE THUNDERSTORMS CONTAIN HAIL OF NICKEL DIAMETER OR
LARGER AND/OR WINDS GUSTS OVER 58 MPH.

THE NATIONAL WEATHER SERVICE WILL CONTINUE TO MONITOR THE SITUATION.
STAY TUNED TO YOUR FAVORITE SOURCE FOR WEATHER INFORMATION FOR
FURTHER UPDATES ON THIS SITUATION.

TMA
Special weather statement, Jun 30, 11:36 AM EDT, 3 hours 23 minutes before
NYZ001>008-010>014-019>021-010000-

SEVERE WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE BUFFALO NY
1136 AM EDT TUE JUN 30 1998

...SEVERE THUNDERSTORMS POSSIBLE ACROSS THE AREA THIS AFTERNOON...

THE NATIONAL SEVERE STORMS FORECAST CENTER INDICATES THERE IS A
SLIGHT RISK FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS ACROSS THE
AREA THIS AFTERNOON.

AN APPROACHING COLD FRONT WILL TRIGGER SHOWERS AND THUNDERSTORMS
ACROSS THE REGION THIS AFTERNOON. SOME OF THESE THUNDERSTORMS COULD
REACH SEVERE LIMITS. THE GREATEST THREAT IS THE POSSIBILITY OF
DAMAGING WINDS. LARGE HAIL IS ALSO POSSIBLE.

VERY HUMID CONDITIONS CONTINUE ACROSS THE AREA AND ANY THUNDERSTORMS
THAT DEVELOP WILL BE CAPABLE OF PRODUCING TORRENTIAL DOWNPOURS.
RAINFALL AMOUNTS OF UP TO 2 INCHES AN HOUR ARE POSSIBLE. A FLASH
FLOOD WATCH REMAINS IN EFFECT THIS AFTERNOON FOR THE ENTIRE REGION.

SKYWARN ACTIVATION MAY BE NEEDED THIS AFTERNOON.

REMEMBER...SEVERE THUNDERSTORMS CONTAIN HAIL OF NICKEL DIAMETER OR
LARGER AND/OR WINDS GUSTS OVER 58 MPH.

THE NATIONAL WEATHER SERVICE WILL CONTINUE TO MONITOR THE SITUATION.
STAY TUNED TO YOUR FAVORITE SOURCE FOR WEATHER INFORMATION FOR
FURTHER UPDATES ON THIS SITUATION.

TMA

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 6:46 AM EDTSevere Thunderstorm WarningBUFErie, Niagara49 min
Jun 30, 7:32 AM EDTSevere Thunderstorm WarningBUFOrleans33 min
Jun 30, 2:51 PM EDTFlash Flood WarningBUFMonroe2 hr
Jun 30, 3:35 PM EDTSevere Thunderstorm WarningBUFErie55 min
Jun 30, 4:26 PM EDTSevere Thunderstorm WarningBUFErie44 min
Jun 30, 4:51 PM EDTSevere Thunderstorm WarningBUFWyoming64 min
Jun 30, 6:00 PM EDTSevere Thunderstorm WarningBUFLivingston20 min

Nearby

Severe Thunderstorm Warnings in New York, 1998Every severe thunderstorm warning in 1998

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; radar from the NEXRAD Level II archive.