Alert archive / New York / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 105, NWS Buffalo, NY

June 30, 1998Orleans County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 30, 1998, 7:32 AM EDT for Orleans County, New York. It was in force for 33 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: Jun 30, 1998, 7:32 AM EDT (11:32 UTC)
Expired: Jun 30, 1998, 8:05 AM EDT
In force: 33 min
Issued by: NWS Buffalo, NY
Area: Whole counties

County Orleans County, NY

What was reported inside it

Time	Report	Where	Remark
Jun 30, 7:50 AM EDT	Thunderstorm Wind	Lyndonville, 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 nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 11.5 hours before the alert went out and 55 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2237 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 76 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.

176 
WUUS1 KBUF 301131 RRA
SVRBUF
NYC073-NYZ523-301205-

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

THE NATIONAL WEATHER SERVICE IN BUFFALO NY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ORLEANS COUNTY INCLUDING ADJACENT COASTAL WATERS IN WESTERN NEW
  YORK

* UNTIL 805 AM EDT

* AT 730 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SEVERE THUNDERSTORM OVER LYDONVILLE...MOVING NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SUNSET BEACH AND POINT BREEZE ON LAKE ONTARIO AT 740 AM

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

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH AND/OR HAIL 3/4 INCH OR LARGER. FOR YOUR PROTECTION FROM
POTENTIALLY DAMAGING WINDS...MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS MAY ALSO
CAUSE RAPID FLOODING OF SMALL STREAMS AND POOR DRAINAGE AREAS.
DONT ATTEMPT TO CROSS FLOODED ROADWAYS.

LEVAN

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, Jun 30, 4:01 AM EDT, 3 hours 31 minutes before

NYZ001>008-010>014-019>021-301600-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BUFFALO NY
330 AM EDT MON JUN 29 1998

...THERE IS SOME POTENTIAL FOR SEVERE THUNDERSTORMS OVER WESTERN AND
NORTHERN NEW YORK TODAY...

AHEAD OF A COLD FRONT...SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS
THE REGION THIS MORNING. SOME OF THESE THUNDERSTORMS COULD REACH
SEVERE LIMITS. THE GREATEST THREAT IS THE POSSIBILITY OF LARGE HAIL,
ALTHOUGH STRONG WINDS AT THE ONSET ARE ALSO A 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 HAS BEEN ISSUED FOR TODAY FOR THE ENTIRE REGION.

SKYWARN ACTIVATION MAY BE NEEDED TODAY.

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.

LEVAN

Local storm report, Jun 30, 7:29 AM EDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NEW YORK
729 AM EDT TUE JUN 30 1998

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

0655 AM    LEWISTON                  NY   WIND DAMAGE
06/30/98   NIAGARA                        WIRES DOWN REPORT FROM
                                          NIAGARA CO SHERIFF

0710 AM    PENDLETON CENTER          NY   WIND DAMAGE
06/30/98   NIAGARA                        WIRES/TREES DOWN REPORT
                                          FROM NIAGARA CO. SHERIFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 6:46 AM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara	49 min
Jun 30, 2:51 PM EDT	Flash Flood Warning	BUF	Monroe	2 hr
Jun 30, 2:59 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	61 min
Jun 30, 3:35 PM EDT	Severe Thunderstorm Warning	BUF	Erie	55 min
Jun 30, 4:26 PM EDT	Severe Thunderstorm Warning	BUF	Erie	44 min
Jun 30, 4:51 PM EDT	Severe Thunderstorm Warning	BUF	Wyoming	64 min
Jun 30, 6:00 PM EDT	Severe Thunderstorm Warning	BUF	Livingston	20 min

Nearby

Severe Thunderstorm Warnings in New York, 1998 Every 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.