Alert archive / New York / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 89, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Sep 27, 1998, 7:57 PM EDT for Putnam County, Rockland County, Westchester County, New York. It was in force for 63 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
- Sep 27, 1998, 7:57 PM EDT (23:57 UTC)
- Expired
- Sep 27, 1998, 9:00 PM EDT
- In force
- 63 min
- Issued by
- NWS New York, NY
- Area
- Whole counties
Counties Putnam County, NY, Rockland County, NY, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 92 km from the middle of the area, began a volume at 23:56 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 27, 3:15 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 12.0 hours before the alert went out and 92 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.
- Mixed-layer CAPE
- 257 J/kg
- Mixed-layer CIN
- -251 J/kg
- Mixed-layer LCL
- 1298 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 169 m²/s²
- 0-3 km storm-relative helicity
- 188 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
518 WUUS1 KNYC 272356 RRA SVRNYC NYC079-087-119-280100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NEW YORK NY 757 PM EDT SUN SEP 27 1998 THE NATIONAL WEATHER SERVICE IN NEW YORK HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... PUTNAM COUNTY IN SOUTHEASTERN NEW YORK ROCKLAND COUNTY IN SOUTHEASTERN NEW YORK NORTHERN WESTCHESTER COUNTY IN SOUTHEASTERN NEW YORK * UNTIL 900 PM EDT * A LINE OF SEVERE THUNDERSTORMS MOVING SOUTHEAST AROUND 40 MPH WILL MOVE ACROSS THE AREA BETWEEN 8 PM AND 9 PM. THESE STORMS HAVE A HISTORY OF DAMAGING WIND GUSTS...FREQUENT LIGHTNING AND HAIL. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS PW/EKH
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, Sep 27, 3:00 PM EDT, 4 hours 57 minutes before
NYZ067>081-NJZ002>006-011-CTZ005-012-280230- SPECIAL WEATHER STATEMENT AND WEATHER MAP DISCUSSION FOR EXTREME SOUTHEASTERN NEW YORK...NORTHEASTERN NEW JERSEY AND SOUTHERN CONNECTICUT NATIONAL WEATHER SERVICE NEW YORK NY 300 PM EDT SUN SEP 27 1998 ...THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH EFFECTIVE FOR THE ENTIRE TRI-STATE REGION UNTIL 9 PM EDT... A COLD FRONT APPROACHING THE WESTERN SLOPES OF THE APPALACHIANS WILL ADVANCE EASTWARD THIS EVENING...CROSSING THE TRI-STATE REGION LATE TONIGHT. AHEAD OF THIS FRONT SOME VERY WARM AND HUMID AIR IS IN PLACE. THE RESULTANT INSTABILITY IS ENOUGH TO TRIGGER SHOWERS AND THUNDERSTORMS. AT THIS TIME IT APPEARS THAT SOME OF THESE STORMS MAY PRODUCE DAMAGING WIND GUSTS AND POSSIBLY SOME HAIL. ALSO REMEMBER... LIGHTNING ACCOMPANIES ALL THUNDERSTORMS AND CAN BE DEADLY. ONCE THE COLD FRONT PASSES THROUGH LATER TONIGHT...THE THREAT OF SHOWERS AND THUNDERSTORMS WILL END. FAIR SKIES WILL RETURN MONDAY AND CONTINUED THROUGH TUESDAY IN RESPONSE TO A LARGE HIGH PRESSURE SYSTEM BUILDING INTO THE TRI-STATE REGION. TEMPERATURES WILL AVERAGE WELL ABOVE SEASONAL LEVELS THIS EVENING AND TONIGHT IN RESPONSE TO THE VERY WARM AND HUMID SOUTHWESTERLY WIND FLOW. THE COOLER AND DRIER CANADIAN AIR WILL USHER IN BEHIND THE COLD FRONT MONDAY ON GUSTY NORTHWESTERLY WINDS. IN THE MEANTIME...RESIDENTS AND ESPECIALLY BOATERS SHOULD STAY TUNED TO NOAA WEATHER RADIO OR COMMERCIAL MEDIA FOR THE LATEST ON THIS POTENTIAL THREAT. ADDITIONAL INFORMATION CAN BE OBTAINED FROM YOUR LOCAL NATIONAL WEATHER SERVICE WEB SITE AT WWW.NWS.BNL.GOV STALKER
The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 27, 7:29 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 61 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.