Alert archive / New York / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 1, NWS New York, NY

January 9, 1998Orange County, Rockland County, New York

NWS New York, NY issued this severe thunderstorm warning at Jan 9, 1998, 3:06 PM EST for Orange County, Rockland County, New York. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jan 9, 1998, 3:06 PM EST (20:06 UTC)
Expired
Jan 9, 1998, 3:40 PM EST
In force
34 min
Issued by
NWS New York, NY
Area
Whole counties

Counties Orange County, NY, Rockland County, NY

The radar

The Brookhaven radar (KOKX), 118 km from the middle of the area, began a volume at 20:07 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.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.1 hours before the alert went out and 118 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, Brookhaven, NY at 12:00Z on 1998-01-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 6 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 1998-01-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 square meters per square second.1939587897117136156Sfc1 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
6 J/kg
Mixed-layer CIN
-88 J/kg
Mixed-layer LCL
476 m above ground
0-6 km bulk shear
97 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
126 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

970 
WUUS1 KNYC 092008 RRA
SVRNYC
NYC071-087-092040-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
306 PM EST FRI JAN 9 1998

THE NATIONAL WEATHER SERVICE IN NEW YORK NY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 340 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN SOUTHEASTERN NEW YORK

   ...EASTERN ORANGE
   ...ROCKLAND

*

* AT 304 PM EST... NATIONAL WEATHER SERVICE DOPPLER RADAR IN UPTON
  NY INDICATED A LINE OF SEVERE THUNDERSTORMS MOVING NORTHEAST
  AROUND 40 MPH.

SOME OF THESE STORMS CONTAIN HAIL...STRONG GUSTY WINDS...DEADLY
LIGHTNING AND VERY HEAVY DOWNPOURS OF RAIN.

IAA

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, Jan 9, 2:35 PM EST, 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
235 PM EST FRI JAN 09 1998

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

0200 PM    PORT JERVIS               NY
01/09/98   ORANGE                         POLICE DEPT. PEA SIZE
                                          HAIL. GUSTY WINDS. HEAVY
                                          DOWNPOUR.
Local storm report, Jan 9, 2:35 PM EST, 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
235 PM EST FRI JAN 09 1998

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

0200 PM    PORT JERVIS               NY
01/09/98   ORANGE                         POLICE DEPT. PEA SIZE
                                          HAIL. GUSTY WINDS. HEAVY
                                          DOWNPOUR.

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 9, 3:09 PM ESTSevere Thunderstorm WarningOKXPutnam, Westchester61 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.