Alert archive / New York / Flash Flood Warnings in 1998
Flash Flood Warning 8, NWS New York, NY
NWS New York, NY issued this flash flood warning at May 10, 1998, 11:31 AM EDT for Rockland County, New York. It was in force for 10 hr. 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 10, 1998, 11:31 AM EDT (15:31 UTC)
- Expired
- May 10, 1998, 9:30 PM EDT
- In force
- 10 hr
- Issued by
- NWS New York, NY
- Area
- Whole counties
County Rockland County, NY
The radar
The Brookhaven radar (KOKX), 102 km from the middle of the area, began a volume at 15:33 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, 3.5 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 474 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 309 m²/s²
- 0-3 km storm-relative helicity
- 388 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KNYC 101532 FFWNYC NYC087-110130- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE NEW YORK NY 1131 AM EDT SUN MAY 10 1998 THE NATIONAL WEATHER SERVICE IN NEW YORK HAS ISSUED A * FLASH FLOOD WARNING FOR... ROCKLAND COUNTY IN SOUTHEASTERN NEW YORK * UNTIL 930 PM EDT * AT 1125 AM EDT...THE RIVER GAUGE ON THE MAHWAH RIVER AT SUFFERN WAS AT 3.90 FEET. WITH ADDITIONAL HEAVY RAINFALL EXPECTED THIS AFTERNOON...THE RIVER IS EXPECTED TO RISE ABOVE THE 4 FOOT FLOOD STAGE AT ABOUT 4.5 FEET BY THIS EVENING. OTHER STREAMS AND RIVERS IN THE COUNTY MAY ALSO OVERFLOW THEIR BANKS WITH ADDITIONAL RAINFALL THIS AFTERNOON. * DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD! RTEYNOLDS
What forecasters said that day
The local office's own words before this flash flood 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 10, 10:59 AM EDT, 32 minutes before
NYZ067>081-NJZ002>006-011-CTZ005-012-102000- SPECIAL WEATHER STATEMENT AND WEATHER MAP DISCUSSION FOR EXTREME SOUTHEASTERN NEW YORK...NORTHEASTERN NEW JERSEY AND SOUTHERN CONNECTICUT NATIONAL WEATHER SERVICE NEW YORK NY 1059 AM EDT SUN MAY 10 1998 ...THE FLOOD WATCH FOR NORTHEASTERN NEW JERSEY CONTINUES THROUGH THIS AFTERNOON... ...THE COASTAL FLOOD WATCH CONTINUES THROUGH MONDAY... LOW PRESSURE OFF THE MID ATLANTIC COAST WILL DRIFT VERY SLOWLY EAST OVER THE NEXT TWO DAYS. HIGH PRESSURE OVER SOUTHEAST CANADA WILL ALSO MOVE EAST REACHING THE CANADIAN MARITIMES BY MONDAY NIGHT. THE PERSISTENT STRONG NORTHEAST FLOW OF MOIST AIR BETWEEN THESE TWO WEATHER SYSTEMS WILL RESULT IN CONTINUED PERIODS OF RAIN INTO MONDAY. THIS EXTENDED PERIOD OF ONSHORE WINDS WILL RESULT IN WIDESPREAD MINOR COASTAL FLOODING DURING THE TIMES OF HIGH TIDE INTO MONDAY. LOCAL MODERATE COASTAL FLOODING IS ALSO POSSIBLE...ESPECIALLY IN THOSE AREAS THAT ARE MOST VULNERABLE...SUCH AS FREEPORT LONG ISLAND. THE FLOOD WATCH WILL REMAIN IN EFFECT THIS AFTERNOON FOR NORTHEAST NEW JERSEY. ANY PROLONGED PERIODS OF HEAVY RAIN COULD CAUSE SOME STREAMS AND CREEKS TO RISE TO NEAR BANKFULL. THERE WILL BE FLOODING ON MANY STREETS AND HIGHWAYS SO MOTORISTS SHOULD EXERCISE CAUTION. THERE MAY BE SOME IMPROVEMENT ON THE HORIZON. FAIR AND DRY WEATHER IS EXPECTED TUESDAY AFTERNOON AND WEDNESDAY. REYNOLDS
Special weather statement, May 10, 10:59 AM EDT, 32 minutes before
NYZ067>081-NJZ002>006-011-CTZ005-012-102000- SPECIAL WEATHER STATEMENT AND WEATHER MAP DISCUSSION FOR EXTREME SOUTHEASTERN NEW YORK...NORTHEASTERN NEW JERSEY AND SOUTHERN CONNECTICUT NATIONAL WEATHER SERVICE NEW YORK NY 1059 AM EDT SUN MAY 10 1998 ...THE FLOOD WATCH FOR NORTHEASTERN NEW JERSEY CONTINUES THROUGH THIS AFTERNOON... ...THE COASTAL FLOOD WATCH CONTINUES THROUGH MONDAY... LOW PRESSURE OFF THE MID ATLANTIC COAST WILL DRIFT VERY SLOWLY EAST OVER THE NEXT TWO DAYS. HIGH PRESSURE OVER SOUTHEAST CANADA WILL ALSO MOVE EAST REACHING THE CANADIAN MARITIMES BY MONDAY NIGHT. THE PERSISTENT STRONG NORTHEAST FLOW OF MOIST AIR BETWEEN THESE TWO WEATHER SYSTEMS WILL RESULT IN CONTINUED PERIODS OF RAIN INTO MONDAY. THIS EXTENDED PERIOD OF ONSHORE WINDS WILL RESULT IN WIDESPREAD MINOR COASTAL FLOODING DURING THE TIMES OF HIGH TIDE INTO MONDAY. LOCAL MODERATE COASTAL FLOODING IS ALSO POSSIBLE...ESPECIALLY IN THOSE AREAS THAT ARE MOST VULNERABLE...SUCH AS FREEPORT LONG ISLAND. THE FLOOD WATCH WILL REMAIN IN EFFECT THIS AFTERNOON FOR NORTHEAST NEW JERSEY. ANY PROLONGED PERIODS OF HEAVY RAIN COULD CAUSE SOME STREAMS AND CREEKS TO RISE TO NEAR BANKFULL. THERE WILL BE FLOODING ON MANY STREETS AND HIGHWAYS SO MOTORISTS SHOULD EXERCISE CAUTION. THERE MAY BE SOME IMPROVEMENT ON THE HORIZON. FAIR AND DRY WEATHER IS EXPECTED TUESDAY AFTERNOON AND WEDNESDAY. REYNOLDS
Nearby
Flash Flood Warnings in New York, 1998Every flash flood 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.