Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 48, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Jul 8, 2021, 2:11 PM EDT for Bergen County, Passaic County, New Jersey; Bronx County, Rockland County, Westchester County, New York. It was in force for 49 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 8, 2021, 2:11 PM EDT (18:11 UTC)
- Expired
- Jul 8, 2021, 3:00 PM EDT
- In force
- 49 min
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Bergen County, NJ, Passaic County, NJ, Bronx County, NY, Rockland County, NY, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 91 km from the middle of the area, began a volume at 18:11 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 |
|---|---|---|---|
| Jul 8, 2:15 PM EDT | TSTM WND DMG | 1 Wsw Ridgewood, NJ | TREE DOWN ON POWER LINES AND ROAD. |
| Jul 8, 2:59 PM EDT | TSTM WND DMG | 2 Ese Hastings-On-Hudso, NY | TREE DOWN ON SPRAIN BROOK PARKWAY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 8, 2:09 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 6.2 hours before the alert went out and 91 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
- 973 J/kg
- Mixed-layer CIN
- -77 J/kg
- Mixed-layer LCL
- 751 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted.
779
WUUS51 KOKX 081811
SVROKX
NJC003-031-NYC005-087-119-081900-
/O.NEW.KOKX.SV.W.0048.210708T1811Z-210708T1900Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
211 PM EDT Thu Jul 8 2021
The National Weather Service in Upton NY has issued a
* Severe Thunderstorm Warning for...
Eastern Passaic County in northeastern New Jersey...
Bergen County in northeastern New Jersey...
Southern Westchester County in southeastern New York...
Bronx County in southeastern New York...
Rockland County in southeastern New York...
* Until 300 PM EDT.
* At 209 PM EDT, a cluster of severe thunderstorms was located over
over northeast New Jersey and southern Rockland County. The
strongest of these cells was located over Norwood, or over Tappan,
moving east at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...This storm has a history of producing large hail.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and power lines.
* Locations impacted include...
Yonkers, Paterson, Passaic, White Plains, Hackensack, Bergenfield,
Paramus, Ridgewood, Tarrytown, Dobbs Ferry, Nyack, Tappan,
Riverdale, Fort Lee and Harrison.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
These thunderstorms are capable of producing all types of severe
weather including large hail, damaging straight line winds, and
possibly a tornado. Move quickly to a safe shelter such as an
interior room, a bathroom, closet or basement.
Continuous cloud to ground lightning is also occurring with these
storms. Move indoors immediately. Lightning is one of nature's
leading killers. If you can hear thunder, you are close enough to be
struck by lightning.
&&
LAT...LON 4098 7427 4105 7415 4116 7371 4111 7370
4110 7373 4107 7370 4098 7369 4088 7391
4088 7393 4086 7395 4084 7399 4084 7414
TIME...MOT...LOC 1809Z 257DEG 14KT 4101 7395
HAIL...1.00IN
WIND...60MPH
$$
Goodman2 follow-up statements
125
WWUS51 KOKX 081836
SVSOKX
Severe Weather Statement
National Weather Service New York NY
236 PM EDT Thu Jul 8 2021
NJC031-NYC005-081845-
/O.CAN.KOKX.SV.W.0048.000000T0000Z-210708T1900Z/
Passaic NJ-Bronx NY-
236 PM EDT Thu Jul 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN PASSAIC AND BRONX
COUNTIES IS CANCELLED...
The thunderstorms which prompted the warning have moved away from
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 9 PM.
LAT...LON 4092 7392 4105 7414 4106 7411 4116 7371
4111 7370 4110 7373 4107 7370 4098 7369
4090 7386 4090 7387
TIME...MOT...LOC 1835Z 246DEG 17KT 4104 7382
$$
NJC003-NYC087-119-081900-
/O.CON.KOKX.SV.W.0048.000000T0000Z-210708T1900Z/
Bergen NJ-Westchester NY-Rockland NY-
236 PM EDT Thu Jul 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR NORTHEASTERN BERGEN...SOUTHERN WESTCHESTER AND ROCKLAND
COUNTIES...
At 235 PM EDT, a cluster of strong to severe thunderstorms was
located over the warned area. The strongest of these storms was
located near Dobbs Ferry, moving northeast at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and power lines.
Locations impacted include...
Yonkers, White Plains, Tarrytown, Dobbs Ferry, Nyack, Tappan,
Harrison, Scarsdale, Pearl River, Bronxville, Norwood, Hawthorne,
Orangeburg, Mount Vernon and Eastchester.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. If you can hear thunder, you are close enough to a
thunderstorm be struck by lightning.
&&
LAT...LON 4092 7392 4105 7414 4106 7411 4116 7371
4111 7370 4110 7373 4107 7370 4098 7369
4090 7386 4090 7387
TIME...MOT...LOC 1835Z 246DEG 17KT 4104 7382
HAIL...1.00IN
WIND...60MPH
$$
Goodman320
WWUS51 KOKX 081900
SVSOKX
Severe Weather Statement
National Weather Service New York NY
300 PM EDT Thu Jul 8 2021
NJC003-NYC087-119-081909-
/O.EXP.KOKX.SV.W.0048.000000T0000Z-210708T1900Z/
Bergen NJ-Westchester NY-Rockland NY-
300 PM EDT Thu Jul 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BERGEN...SOUTHERN
WESTCHESTER AND ROCKLAND COUNTIES WILL EXPIRE AT 300 PM EDT...
The storms which prompted the warning has weakened and no longer
poses an immediate threat to life or property. However heavy rain is
still possible.
A Severe Thunderstorm Watch remains in effect until 9 PM.
LAT...LON 4092 7392 4105 7414 4106 7411 4116 7371
4111 7370 4110 7373 4107 7370 4098 7369
4090 7386 4090 7387
TIME...MOT...LOC 1859Z 257DEG 14KT 4106 7370
$$
GoodmanThe office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 12:59 PM EDT | Special Weather Statement | OKX | Passaic | 46 min |
| Jul 8, 1:24 PM EDT | Severe Thunderstorm Warning | OKX | Bergen, Passaic | 51 min |
| Jul 8, 2:29 PM EDT | Areal Flood Advisory | OKX | Bergen, Passaic | 2 hr |
| Jul 8, 3:08 PM EDT | Special Weather Statement | OKX | Bergen | 37 min |
| Jul 8, 3:15 PM EDT | Flash Flood Warning | OKX | Bergen, Essex, Passaic | 3 hr |
| Jul 8, 3:27 PM EDT | Special Weather Statement | OKX | Essex | 48 min |
| Jul 8, 3:53 PM EDT | Flash Flood Warning | OKX | Bergen, Essex, Hudson | 3 hr |
| Jul 8, 5:06 PM EDT | Flash Flood Warning | OKX | Bergen | 3 hr |
| Jul 8, 6:15 PM EDT | Areal Flood Advisory | OKX | Bergen, Essex, Passaic | 3 hr |
| Jul 8, 6:35 PM EDT | Special Weather Statement | OKX | Bergen, Essex, Hudson, Union | 40 min |
| Jul 8, 7:25 PM EDT | River Flood Warning | OKX | Bergen | 12 hr |
| Jul 7, 8:02 PM EDT | Special Weather Statement | OKX | Putnam | 43 min |
| Jul 7, 10:43 PM EDT | Special Weather Statement | OKX | Dutchess | 47 min |
| Jul 7, 11:19 PM EDT | Special Weather Statement | OKX | Orange | 56 min |
| Jul 7, 11:34 PM EDT | Special Weather Statement | OKX | Orange, Putnam | 56 min |
| Jul 7, 11:46 PM EDT | Special Weather Statement | OKX | Orange, Putnam, Rockland, Westchester | 44 min |
| Jul 8, 12:18 AM EDT | Areal Flood Advisory | OKX | Orange | 66 min |
| Jul 8, 12:29 AM EDT | Special Weather Statement | OKX | Putnam, Westchester | 46 min |
| Jul 8, 12:44 AM EDT | Areal Flood Advisory | OKX | Orange, Putnam | 62 min |
| Jul 8, 5:08 AM EDT | Tropical Storm Warning | OKX | Nassau, Suffolk | 33 hr |
| Jul 8, 9:23 AM EDT | Areal Flood Advisory | OKX | Orange | 112 min |
| Jul 8, 11:54 AM EDT | Special Weather Statement | OKX | Orange | 66 min |
| Jul 8, 12:59 PM EDT | Special Weather Statement | OKX | Putnam | 46 min |
| Jul 8, 2:53 PM EDT | Special Marine Warning | OKX | 52 min | |
| Jul 8, 2:58 PM EDT | Special Weather Statement | OKX | Nassau, Queens | 47 min |
| Jul 8, 3:10 PM EDT | Small Craft Advisory | OKX | 23 hr | |
| Jul 8, 3:19 PM EDT | Special Weather Statement | OKX | New York | 41 min |
| Jul 8, 3:49 PM EDT | Special Marine Warning | OKX | 56 min | |
| Jul 8, 4:00 PM EDT | Special Weather Statement | OKX | Nassau | 45 min |
| Jul 8, 4:37 PM EDT | Special Weather Statement | OKX | Bronx, New York | 38 min |
| Jul 8, 4:51 PM EDT | Special Marine Warning | OKX | 24 min | |
| Jul 8, 5:03 PM EDT | Special Weather Statement | OKX | Nassau | 42 min |
| Jul 8, 5:16 PM EDT | Severe Thunderstorm Warning | OKX | Nassau, Suffolk | 44 min |
| Jul 8, 5:38 PM EDT | Areal Flood Advisory | OKX | Nassau, Suffolk | 3 hr |
| Jul 8, 5:59 PM EDT | Special Weather Statement | OKX | Suffolk | 46 min |
| Jul 8, 6:40 PM EDT | Special Weather Statement | OKX | Suffolk | 50 min |
| Jul 8, 6:59 PM EDT | Areal Flood Advisory | OKX | Kings, Nassau, New York, Queens | 90 min |
| Jul 8, 7:17 PM EDT | Special Weather Statement | OKX | Nassau | 43 min |
Nearby
Severe Thunderstorm Warnings in New York, 2021Severe Thunderstorm Warnings in New Jersey, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.