Alert archive / New York / Tornado Warnings in 1998
Tornado Warning 6, NWS New York, NY
NWS New York, NY issued this tornado warning at May 31, 1998, 9:56 PM EDT for Rockland County, New York. It was in force for 59 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
- May 31, 1998, 9:56 PM EDT (01:56 UTC)
- Expired
- May 31, 1998, 10:55 PM EDT
- In force
- 59 min
- Issued by
- NWS New York, NY
- Area
- Whole counties
County Rockland County, NY
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 31, 5:00 PM EDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 1.9 hours before the alert went out and 102 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
- 151 J/kg
- Mixed-layer CIN
- -348 J/kg
- Mixed-layer LCL
- 1224 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 233 m²/s²
- 0-3 km storm-relative helicity
- 319 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
254 WFUS1 KNYC 010157 RRA TORNYC NYC071-079-087-010255- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NEW YORK NY 956 PM EDT SUN MAY 31 1998 THE NATIONAL WEATHER SERVICE IN NEW YORK HAS ISSUED A * TORNADO WARNING FOR... ORANGE COUNTY IN SOUTHEASTERN NEW YORK PUTNAM COUNTY IN SOUTHEASTERN NEW YORK NORTHERN ROCKLAND IN SOUTHEASTERN NEW YORK * UNTIL 1055 PM EDT * SOME LOCATIONS IN THE PATH OF THIS TORNADO ARE... BREWSTER. * AT 952 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A POSSIBLE TORNADO 6 MILES SOUTHWEST OF MAHOPAC MOVING EAST AT 40 MPH. THIS STORM HAS A PAST HISTORY OF PRODUCING VERY GUSTY WINDS... HAIL AND A POSSIBLE TORNADO. GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR KLEIN/MCKILLOP
What forecasters said that day
The local office's own words before this tornado 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, May 31, 4:00 PM EDT, 5 hours 56 minutes before
NYZ067>081-NJZ002>006-011-CTZ005>012-010300- SPECIAL WEATHER STATEMENT AND MAP DISCUSSION FOR EXTREME SOUTHEASTERN NEW YORK... NORTHEASTERN NEW JERSEY AND SOUTHERN CONNECTICUT NATIONAL WEATHER SERVICE NEW YORK NY 400 PM EDT SUN MAY 31 1998 ...POTENTIAL FOR SEVERE THUNDERSTORM ACTIVITY FOR THE REST OF TODAY AND MOST OF TONIGHT... THE NATIONAL WEATHER SERVICE STORM PREDICTION CENTER IN NORMAN OKLAHOMA IS FORECASTING A HIGH RISK OF SEVERE THUNDERSTORMS FOR THE HUDSON VALLEY AND NORTHWESTERN NEW JERSEY FOR LATER TODAY AND TONIGHT. THERE IS A MODERATE RISK OF SEVERE STORMS ACROSS NORTHEASTERN NEW JERSEY...NEW YORK CITY...AND CENTRAL AND WESTERN CONNECTICUT WITH A SLIGHT RISK OF SEVERE STORMS ACROSS SOUTHEASTERN CONNECTICUT AND LONG ISLAND. A TROUGH OF LOW PRESSURE OVER CENTRAL PENNSYLVANIA WILL MOVE FROM WEST TO EAST ACROSS THE TRI-STATE AREA THIS EVENING...BRINGING THUNDERSTORMS TO THE LOCAL AREA. SOME THUNDERSTORMS MAY PRODUCE DAMAGING WINDS AND SMALL HAIL. CONDITIONS ARE ALSO FAVORABLE FOR AN ISOLATED TORNADO. THESE STORMS WILL ALSO PRODUCE BRIEF HEAVY DOWNPOURS WHICH COULD CAUSE FLOODING IN POOR DRAINAGE AREAS. A COLD FRONT WILL APPROACH FROM THE WEST TONIGHT. THE ENTIRE AREA WILL BE UNSTABLE AHEAD OF THE COLD FRONT...SO THE THREAT FOR DANGEROUS THUNDERSTORMS WILL CONTINUE THROUGHOUT THE TRI-STATE AREA UNTIL WELL AFTER MIDNIGHT. BE READY TO SEEK SAFE SHELTER RAPIDLY IF SEVERE WEATHER APPROACHES...ESPECIALLY IF YOU WILL BE OUTDOORS OR ON THE WATER. CONDITIONS WILL IMPROVE LATE TONIGHT AS THE COLD FRONT PUSHES OFFSHORE. MOSTLY SUNNY SKIES ARE EXPECTED ON MONDAY. TEMPERATURES WILL BE PLEASANT...BUT IT WILL REMAIN BREEZY. HIGH PRESSURE WILL PROVIDE US WITH A CLEAR AND COOL NIGHT MONDAY NIGHT AND FAIR WEATHER WILL CONTINUE TUESDAY. THE NEXT CHANCE FOR PRECIPITATION WILL COME FROM TUESDAY NIGHT INTO WEDNESDAY. WOOL
Special weather statement, May 31, 6:13 PM EDT, 3 hours 43 minutes before
NYZ067>081-NJZ002>006-011-CTZ005>012-010400- SPECIAL WEATHER STATEMENT - EVENING SEVERE WEATHER POTENTIAL NATIONAL WEATHER SERVICE NEW YORK NY 613 PM EDT SUN MAY 31 1998 ...ROUGH AND TUMBLE WEATHER IN THE FORM OF SEVERE THUNDERSTORMS IS HEADED FOR THE TRI-STATE REGION... ...A TORNADO WATCH HAS BEEN ISSUED FOR THE ENTIRE TRI-STATE REGION AND IS IN EFFECT UNTIL 1000 PM... A VERY STRONG STORM SYSTEM MOVING INTO SOUTHEASTERN CANADA WILL BRING SOME VERY INTENSE WEATHER TO THE TRI-STATE REGION LATER THIS EVENING. SEVERE THUNDERSTORMS HAVE BEEN MOVING ACROSS PORTIONS OF UPSTATE NEW YORK THROUGHOUT THE AFTERNOON HOURS...AND SEVERE THUNDERSTORMS ARE CURRENTLY DEVELOPING ACROSS CENTRAL AND EASTERN PENNSYLVANIA. THE ATMOSPHERE HAS BECOME VERY UNSTABLE ACROSS OUR REGION AS WELL... AND SEVERE WEATHER IS POSSIBLE LATER THIS EVENING. ANY SEVERE THUNDERSTORMS THAT DO DEVELOP MAY PRODUCE WIND GUSTS WELL OVER 60 MPH WHICH MAY DOWN TREES AND POWER LINES...LARGE HAIL. CONDITIONS ARE FAVORABLE FOR ISOLATED TORNADOES AS WELL. CURRENT PROJECTIONS INDICATE THAT THUNDERSTORMS WILL BEGIN TO ARRIVE IN THE LOWER HUDSON VALLEY AROUND 730 PM...NORTHEAST NEW JERSEY BY ABOUT 830 PM...AND SOUTHERN CONNECTICUT...NEW YORK CITY AND LONG ISLAND WELL AFTER SUNSET. ANYONE WITH OUTDOOR PLANS FOR THIS EVENING SHOULD KEEP A WATCHFUL EYE TO THE SKY. IF THREATENING WEATHER APPROACHES...BE PREPARED TO SEEK SAFE SHELTER. STAY TUNED TO NOAA WEATHER RADIO OR OTHER MEDIA OUTLETS FOR THE LATEST SHORT TERM FORECASTS AND POSSIBLE WARNINGS. REYNOLDS / NWSFO BROOKHAVEN NY
The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 8:17 PM EDT | Tornado Warning | OKX | Orange | 38 min |
| May 31, 8:33 PM EDT | Severe Thunderstorm Warning | OKX | Putnam | 57 min |
| May 31, 8:47 PM EDT | Tornado Warning | OKX | Orange | 58 min |
| May 31, 9:05 PM EDT | Tornado Warning | OKX | Westchester | 65 min |
| May 31, 9:56 PM EDT | Tornado Warning | OKX | Orange, Putnam | 59 min |
| May 31, 10:10 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 60 min |
| May 31, 10:37 PM EDT | Flash Flood Warning | OKX | Orange | 118 min |
| May 31, 10:47 PM EDT | Severe Thunderstorm Warning | OKX | Rockland | 48 min |
| May 31, 10:47 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 48 min |
| Jun 1, 2:03 AM EDT | Severe Thunderstorm Warning | OKX | Kings, Queens | 47 min |
| Jun 1, 2:33 AM EDT | Severe Thunderstorm Warning | OKX | Nassau, Suffolk | 47 min |
Nearby
Tornado Warnings in New York, 1998Every tornado warning in 1998Tornadoes 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.