Alert archive / New York / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 69, NWS Albany, NY

September 7, 1998Schoharie County, New York

NWS Albany, NY issued this severe thunderstorm warning at Sep 7, 1998, 1:48 AM EDT for Schoharie County, New York. It was in force for 2 hr. 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: Sep 7, 1998, 1:48 AM EDT (05:48 UTC)
Expired: Sep 7, 1998, 3:50 AM EDT
In force: 2 hr
Issued by: NWS Albany, NY
Area: Whole counties

County Schoharie County, NY

The radar

The Albany radar (KENX), 31 km from the middle of the area, began a volume at 05:52 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

Time	Report	Where	Remark
Sep 7, 2:45 AM EDT	Thunderstorm Wind	Carlisle, NY
Sep 7, 2:45 AM EDT	Thunderstorm Wind	Sharon, 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.

Issued	Product	Office	Lasted
Sep 7, 1:15 AM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 5.8 hours before the alert went out and 51 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: 1998 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 1651 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 260 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 10.7

Open this sounding in Storm Lab

The text

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

853 
WUUS1 KALB 070548 RRA
SVRALB
NYC035-041-043-057-095-070750-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ALBANY NY
148 AM EDT MON SEP 7 1998

THE NATIONAL WEATHER SERVICE IN ALBANY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HERKIMER COUNTY IN CENTRAL NEW YORK
  HAMILTON COUNTY IN NORTHERN NEW YORK
  FULTON COUNTY IN CENTRAL NEW YORK
  MONTGOMERY COUNTY IN CENTRAL NEW YORK
  SCHOHARIE COUNTY IN EASTERN NEW YORK

* UNTIL 350 AM EDT

* AT 145 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM ENTERING WESTERN HERKIMER COUNTY... MOVING
  EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BETWEEN OLD FORGE OHIO AND HERKIMER AT 210 AM EDT
  BETWEEN RAQUETTE LAKE HIGGINS BAY AND CANAJOHARIE AT 235 AM EDT
  BETWEEN INDIAN LAKE JOHNSTOWN AND COBLESKILL AT 3AM EDT

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS

GG

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 7, 12:28 AM EDT	Severe Thunderstorm Warning	ALY	Hamilton, Herkimer	92 min
Sep 7, 1:37 AM EDT	Severe Thunderstorm Warning	ALY	Warren, Washington	93 min
Sep 7, 1:48 AM EDT	Severe Thunderstorm Warning	ALY	Fulton, Hamilton, Herkimer, Montgomery	2 hr
Sep 7, 1:59 AM EDT	Tornado Warning	ALY	Herkimer	61 min
Sep 7, 2:37 AM EDT	Severe Thunderstorm Warning	ALY	Albany, Saratoga, Schenectady	118 min
Sep 7, 2:37 AM EDT	Severe Thunderstorm Warning	ALY	Greene	118 min
Sep 7, 2:57 AM EDT	Severe Thunderstorm Warning	ALY	Columbia, Rensselaer	118 min
Sep 7, 2:57 AM EDT	Severe Thunderstorm Warning	ALY	Washington	118 min
Sep 7, 3:12 AM EDT	Severe Thunderstorm Warning	ALY	Warren	63 min
Sep 7, 3:22 AM EDT	Tornado Warning	ALY	Saratoga	48 min
Sep 7, 3:32 AM EDT	Tornado Warning	ALY	Washington	33 min
Sep 7, 5:40 AM EDT	Severe Thunderstorm Warning	ALY	Ulster	60 min
Sep 7, 6:05 AM EDT	Severe Thunderstorm Warning	ALY	Dutchess	45 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; radar from the NEXRAD Level II archive.