Alert archive / New York / Wind Advisories in 2020
Wind Advisory 8, NWS New York, NY
NWS New York, NY issued this wind advisory at Apr 20, 2020, 3:51 PM EDT for 5 counties in New Jersey; 11 counties in New York; 4 counties in Connecticut. It took effect at Apr 21, 2020, 3:41 PM EDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Apr 20, 2020, 3:51 PM EDT (19:51 UTC)
- In effect from
- Apr 21, 2020, 3:41 PM EDT
- Expired
- Apr 21, 2020, 10:00 PM EDT
- In force
- 6 hr
- Issued by
- NWS New York, NY
Counties Greater Bridgeport Planning Region, CT, Lower Connecticut River Valley Planning Region, CT, Naugatuck Valley Planning Region, CT, Southeastern Connecticut Planning Region, CT, Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Passaic County, NJ, Union County, NJ, Bronx County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Queens County, NY, Richmond County, NY, Rockland County, NY, Suffolk County, NY, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 71 km from the middle of the area, began a volume at 19:52 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, 7.9 hours before the alert went out and 71 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1172 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- -187 m²/s²
- 0-3 km storm-relative helicity
- -74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
074 WWUS71 KOKX 201951 NPWOKX URGENT - WEATHER MESSAGE National Weather Service New York NY 351 PM EDT Mon Apr 20 2020 CTZ011-012-NYZ079-081-211015- /O.NEW.KOKX.WI.Y.0008.200421T2100Z-200422T0600Z/ /O.EXT.KOKX.FR.Y.0001.200421T0400Z-200421T1200Z/ Southern Middlesex-Southern New London-Northeastern Suffolk- Southeastern Suffolk- 351 PM EDT Mon Apr 20 2020 ...FROST ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT TUESDAY... ...WIND ADVISORY IN EFFECT FROM 5 PM TUESDAY TO 2 AM EDT WEDNESDAY... * WHAT...For the Frost Advisory, temperatures in the mid 30s will result in frost formation. For the Wind Advisory, west winds 15 to 25 mph with gusts up to 50 mph expected. * WHERE...In Connecticut, Southern Middlesex and Southern New London Counties. In New York, Northeastern Suffolk and Southeastern Suffolk Counties. * WHEN...For the Frost Advisory, from midnight tonight to 8 AM EDT Tuesday. For the Wind Advisory, from 5 PM Tuesday to 2 AM EDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. && $$ CTZ007-008-211015- /O.NEW.KOKX.WI.Y.0008.200421T2100Z-200422T0600Z/ /O.EXB.KOKX.FR.Y.0001.200421T0400Z-200421T1200Z/ Northern Middlesex-Northern New London- 351 PM EDT Mon Apr 20 2020 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT TUESDAY... ...WIND ADVISORY IN EFFECT FROM 5 PM TUESDAY TO 2 AM EDT WEDNESDAY... * WHAT...For the Frost Advisory, temperatures in the mid 30s will result in frost formation. For the Wind Advisory, northwest winds 15 to 25 mph with gusts up to 50 mph expected. * WHERE...Northern Middlesex and Northern New London Counties. * WHEN...For the Frost Advisory, from midnight tonight to 8 AM EDT Tuesday. For the Wind Advisory, from 5 PM Tuesday to 2 AM EDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. && $$ CTZ005-006-009-010-NJZ002-004-006-103>108-NYZ067>075-078-080- 176>179-211015- /O.NEW.KOKX.WI.Y.0008.200421T2100Z-200422T0600Z/ Northern Fairfield-Northern New Haven-Southern Fairfield- Southern New Haven-Western Passaic-Eastern Passaic-Hudson- Western Bergen-Eastern Bergen-Western Essex-Eastern Essex- Western Union-Eastern Union-Orange-Putnam-Rockland- Northern Westchester-Southern Westchester-New York (Manhattan)- Bronx-Richmond (Staten Island)-Kings (Brooklyn)- Northwestern Suffolk-Southwestern Suffolk-Northern Queens- Northern Nassau-Southern Queens-Southern Nassau- 351 PM EDT Mon Apr 20 2020 ...WIND ADVISORY IN EFFECT FROM 5 PM TUESDAY TO 2 AM EDT WEDNESDAY... * WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Portions of northeast New Jersey, southern Connecticut and southeast New York. * WHEN...From 5 PM Tuesday to 2 AM EDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
4 follow-up statements
226 WWUS71 KOKX 210729 NPWOKX URGENT - WEATHER MESSAGE National Weather Service New York NY 329 AM EDT Tue Apr 21 2020 CTZ007-008-011-012-NYZ079-081-212030- /O.NEW.KOKX.FZ.W.0003.200422T0400Z-200422T1300Z/ /O.CON.KOKX.FR.Y.0001.000000T0000Z-200421T1200Z/ /O.CON.KOKX.WI.Y.0008.200421T2100Z-200422T0600Z/ Northern Middlesex-Northern New London-Southern Middlesex- Southern New London-Northeastern Suffolk-Southeastern Suffolk- 329 AM EDT Tue Apr 21 2020 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... ...WIND ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 2 AM EDT WEDNESDAY... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT WEDNESDAY... * WHAT...For the Frost Advisory, temperatures as low as 34 will result in frost formation. For the Wind Advisory, west winds 10 to 20 mph with gusts up to 50 mph expected. For the Freeze Warning, sub-freezing temperatures as low as 28 expected. * WHERE...In Connecticut, Northern Middlesex, Northern New London, Southern Middlesex and Southern New London Counties. In New York, Northeastern Suffolk and Southeastern Suffolk Counties. * WHEN...For the Frost Advisory, until 8 AM EDT this morning. For the Wind Advisory, from 5 PM this afternoon to 2 AM EDT Wednesday. For the Freeze Warning, from midnight tonight to 9 AM EDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ CTZ005-006-009-010-NJZ002-004-103>105-107-NYZ067>071-078-080- 212030- /O.NEW.KOKX.FZ.W.0003.200422T0400Z-200422T1300Z/ /O.CON.KOKX.WI.Y.0008.200421T2100Z-200422T0600Z/ Northern Fairfield-Northern New Haven-Southern Fairfield- Southern New Haven-Western Passaic-Eastern Passaic-Western Bergen- Eastern Bergen-Western Essex-Western Union-Orange-Putnam-Rockland- Northern Westchester-Southern Westchester-Northwestern Suffolk- Southwestern Suffolk- 329 AM EDT Tue Apr 21 2020 ...WIND ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 2 AM EDT WEDNESDAY... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT WEDNESDAY... * WHAT...For the Wind Advisory, northwest winds 10 to 20 mph with gusts up to 50 mph expected. For the Freeze Warning, sub- freezing temperatures as low as 26 expected. * WHERE...Portions of northeast New Jersey, southern Connecticut and southeast New York. * WHEN...For the Wind Advisory, from 5 PM this afternoon to 2 AM EDT Wednesday. For the Freeze Warning, from midnight tonight to 9 AM EDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ NJZ006-106-108-NYZ072>075-176>179-212030- /O.CON.KOKX.WI.Y.0008.200421T2100Z-200422T0600Z/ Hudson-Eastern Essex-Eastern Union-New York (Manhattan)-Bronx- Richmond (Staten Island)-Kings (Brooklyn)-Northern Queens- Northern Nassau-Southern Queens-Southern Nassau- 329 AM EDT Tue Apr 21 2020 ...WIND ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 2 AM EDT WEDNESDAY... * WHAT...Northwest winds 20 to 25 mph with gusts up to 50 mph expected. * WHERE...Portions of northeast New Jersey and southeast New York. * WHEN...From 5 PM this afternoon to 2 AM EDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
447 WWUS71 KOKX 210941 NPWOKX URGENT - WEATHER MESSAGE National Weather Service New York NY 541 AM EDT Tue Apr 21 2020 CTZ007-011-012-NYZ079-081-212030- /O.CAN.KOKX.FR.Y.0001.000000T0000Z-200421T1200Z/ /O.CON.KOKX.FZ.W.0003.200422T0400Z-200422T1300Z/ /O.CON.KOKX.WI.Y.0008.200421T2100Z-200422T0600Z/ Northern Middlesex-Southern Middlesex-Southern New London- Northeastern Suffolk-Southeastern Suffolk- 541 AM EDT Tue Apr 21 2020 ...WIND ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 2 AM EDT WEDNESDAY... ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT WEDNESDAY... ...FROST ADVISORY IS CANCELLED... * WHAT...For the Wind Advisory, west winds 15 to 25 mph with gusts up to 50 mph expected. For the Freeze Warning, sub-freezing temperatures as low as 29 expected. * WHERE...In Connecticut, Southern Middlesex, Northern Middlesex and Southern New London Counties. In New York, Southeastern Suffolk and Northeastern Suffolk Counties. * WHEN...For the Wind Advisory, from 5 PM this afternoon to 2 AM EDT Wednesday. For the Freeze Warning, from midnight tonight to 9 AM EDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ CTZ008-212030- /O.CON.KOKX.FZ.W.0003.200422T0400Z-200422T1300Z/ /O.CON.KOKX.FR.Y.0001.000000T0000Z-200421T1200Z/ /O.CON.KOKX.WI.Y.0008.200421T2100Z-200422T0600Z/ Northern New London- 541 AM EDT Tue Apr 21 2020 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... ...WIND ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 2 AM EDT WEDNESDAY... ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT WEDNESDAY... * WHAT...For the Frost Advisory, temperatures as low as 32 will result in frost formation. For the Wind Advisory, west winds around 15 mph with gusts up to 50 mph expected. For the Freeze Warning, sub-freezing temperatures as low as 28 expected. * WHERE...Northern New London County. * WHEN...For the Frost Advisory, until 8 AM EDT this morning. For the Wind Advisory, from 5 PM this afternoon to 2 AM EDT Wednesday. For the Freeze Warning, from midnight tonight to 9 AM EDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ CTZ005-006-009-010-NJZ002-004-103>105-107-NYZ067>071-078-080- 212030- /O.CON.KOKX.FZ.W.0003.200422T0400Z-200422T1300Z/ /O.CON.KOKX.WI.Y.0008.200421T2100Z-200422T0600Z/ Northern Fairfield-Northern New Haven-Southern Fairfield- Southern New Haven-Western Passaic-Eastern Passaic-Western Bergen- Eastern Bergen-Western Essex-Western Union-Orange-Putnam-Rockland- Northern Westchester-Southern Westchester-Northwestern Suffolk- Southwestern Suffolk- 541 AM EDT Tue Apr 21 2020 ...WIND ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 2 AM EDT WEDNESDAY... ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT WEDNESDAY... * WHAT...For the Wind Advisory, northwest winds 10 to 20 mph with gusts up to 50 mph expected. For the Freeze Warning, sub- freezing temperatures as low as 26 expected. * WHERE...Portions of northeast New Jersey, southern Connecticut and southeast New York. * WHEN...For the Wind Advisory, from 5 PM this afternoon to 2 AM EDT Wednesday. For the Freeze Warning, from midnight tonight to 9 AM EDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ NJZ006-106-108-NYZ072>075-176>179-212030- /O.CON.KOKX.WI.Y.0008.200421T2100Z-200422T0600Z/ Hudson-Eastern Essex-Eastern Union-New York (Manhattan)-Bronx- Richmond (Staten Island)-Kings (Brooklyn)-Northern Queens- Northern Nassau-Southern Queens-Southern Nassau- 541 AM EDT Tue Apr 21 2020 ...WIND ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 2 AM EDT WEDNESDAY... * WHAT...Northwest winds 20 to 25 mph with gusts up to 50 mph expected. * WHERE...Portions of northeast New Jersey and southeast New York. * WHEN...From 5 PM this afternoon to 2 AM EDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
668 WWUS71 KOKX 211941 NPWOKX URGENT - WEATHER MESSAGE National Weather Service New York NY 341 PM EDT Tue Apr 21 2020 CTZ005>012-NJZ002-004-103>105-107-NYZ067>071-078>081-220600- /O.EXT.KOKX.WI.Y.0008.200421T1941Z-200422T0600Z/ /O.CON.KOKX.FZ.W.0003.200422T0400Z-200422T1300Z/ Northern Fairfield-Northern New Haven-Northern Middlesex- Northern New London-Southern Fairfield-Southern New Haven- Southern Middlesex-Southern New London-Western Passaic- Eastern Passaic-Western Bergen-Eastern Bergen-Western Essex- Western Union-Orange-Putnam-Rockland-Northern Westchester- Southern Westchester-Northwestern Suffolk-Northeastern Suffolk- Southwestern Suffolk-Southeastern Suffolk- 341 PM EDT Tue Apr 21 2020 ...WIND ADVISORY NOW IN EFFECT UNTIL 2 AM EDT WEDNESDAY... ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT WEDNESDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 28 expected. For the Wind Advisory, west winds 20 to 30 mph with gusts up to 50 mph. * WHERE...Portions of northeast New Jersey, southern Connecticut and southeast New York. * WHEN...For the Freeze Warning, from midnight tonight to 9 AM EDT Wednesday. For the Wind Advisory, until 2 AM EDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ NJZ006-106-108-NYZ072>075-176>179-220600- /O.EXT.KOKX.WI.Y.0008.200421T1941Z-200422T0600Z/ Hudson-Eastern Essex-Eastern Union-New York (Manhattan)-Bronx- Richmond (Staten Island)-Kings (Brooklyn)-Northern Queens- Northern Nassau-Southern Queens-Southern Nassau- 341 PM EDT Tue Apr 21 2020 ...WIND ADVISORY NOW IN EFFECT UNTIL 2 AM EDT WEDNESDAY... * WHAT...West winds 20 to 35 mph with gusts up to 50 mph. * WHERE...New York City, Nassau County in southeast New York, and Hudson, eastern Essex, eastern Union counties in northeast New Jersey. * WHEN...Until 2 AM EDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
660 WWUS71 KOKX 220200 NPWOKX URGENT - WEATHER MESSAGE National Weather Service New York NY 1000 PM EDT Tue Apr 21 2020 CTZ005>012-NJZ002-004-103>105-107-NYZ067>071-078>081-221300- /O.CAN.KOKX.WI.Y.0008.000000T0000Z-200422T0600Z/ /O.CON.KOKX.FZ.W.0003.200422T0400Z-200422T1300Z/ Northern Fairfield-Northern New Haven-Northern Middlesex- Northern New London-Southern Fairfield-Southern New Haven- Southern Middlesex-Southern New London-Western Passaic- Eastern Passaic-Western Bergen-Eastern Bergen-Western Essex- Western Union-Orange-Putnam-Rockland-Northern Westchester- Southern Westchester-Northwestern Suffolk-Northeastern Suffolk- Southwestern Suffolk-Southeastern Suffolk- 1000 PM EDT Tue Apr 21 2020 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EDT WEDNESDAY... ...WIND ADVISORY IS CANCELLED... * WHAT...Sub-freezing temperatures as low as 28 expected. Wind gusts of 30 to 40 mph will continue through midnight, but winds have fallen below advisory levels. * WHERE...Portions of northeast New Jersey, southern Connecticut and southeast New York. * WHEN...Until 9 AM EDT Wednesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ NJZ006-106-108-NYZ072>075-176>179-220300- /O.CAN.KOKX.WI.Y.0008.000000T0000Z-200422T0600Z/ Hudson-Eastern Essex-Eastern Union-New York (Manhattan)-Bronx- Richmond (Staten Island)-Kings (Brooklyn)-Northern Queens- Northern Nassau-Southern Queens-Southern Nassau- 1000 PM EDT Tue Apr 21 2020 ...WIND ADVISORY IS CANCELLED... Wind gusts of 30 to 40 mph will continue through midnight, but winds have fallen below advisory levels. $$
What forecasters said that day
The local office's own words before this wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS New York, NY wrote its last area forecast discussion before this wind advisory went out at Apr 20, 2:42 PM EDT, 1 hour 9 minutes earlier.
Area forecast discussion, Apr 20, 2:42 PM EDT, 1 hour 9 minutes before
Area Forecast Discussion
National Weather Service New York NY
242 PM EDT Mon Apr 20 2020
.SYNOPSIS...
Low pressure remains well offshore today. A warm front will then
pass through on Tuesday, followed by a strong cold front late in
the day. High pressure will follow briefly on Wednesday, then
pass offshore on Thursday as low pressure approaches from the
south and west. The low will redevelop along the coast on Friday
and exit Friday night. Another storm system will quickly follow
for the second half of the weekend.
&&
.NEAR TERM /THROUGH TONIGHT/...
Lowered high temperature forecast by a couple of degrees with
this update. We'll still have to deal with plenty of mid and
high level clouds at the start of this afternoon before clouds
thin out more later in the day. High temperatures mostly in the
50s.
Clear skies and light winds tonight should result in temps
dropping into the 40s in/outside NYC, and into the 30s inland
and across eastern Long Island. Issued frost advy for E Suffolk
and coastal SE CT where frost and widespread mid 30s temps
expected, though there could be some warming late as winds veer
S and WAA begins ahead of an approaching warm front.
&&
.SHORT TERM /TUESDAY THROUGH WEDNESDAY/...
A vigorous negatively tilted upper trough will drop into the
Northeast on Tuesday. Showers and possibly a tstm should become
fairly widespread from west to east from late morning into
early afternoon as a warm front passes through, followed quickly
by a strong cold front mid to late afternoon. The cold front
should be preceded by gusty S-SW winds along the coast, gusting
to 40 mph across Long Island, and accompanied by a band of
showers and a few tstms in a low CAPE but high shear environment
that we have seen a couple of times already in the Northeast
this spring and that have outperformed usual expectations in
terms of severe wx, so could see stronger storms produce
damaging winds, especially with with 0-3km shear oriented normal
to the line, ideal for bowing segments, possibly some hail as
well.
The front should sweep east by early Tue evening, with brisk
NW winds and CAA dropping temps into the 30s in the NYC metro
area, and along the immediate coast, and into the upper 20s
inland. A wind advy may eventually be needed for parts of the
area (mainly metro/coastal areas) Tue night, also freeze
watches/warnings for inland sections. Cool/brisk conds expected
for Wed with temps rising only to the upper 40s to mid 50s.
&&
.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...
By Wednesday night winds will diminish, but temperatures will
still average below normal with inland locations flirting with
the freezing mark once again for Thursday morning lows.
The next storm system will then approach from the west and southwest
for later Thursday and Thursday night. The current thinking is that
much of the day on Thursday will remain dry as high pressure pushes
further offshore. A weakening and stalled front boundary will get
closer to interior northwestern sections during the day on Thursday,
thus a slight chance of a few light showers seems prudent. But the
main rain event will hold off for much of the day, with chances of
rain increasing late in the day, and especially into the evening.
The storm system will begin to take on a double barrel structure
during late Thursday night as low pressure redevelops and emerges off
the Mid Atlantic coast on Friday. This should could lead to a second
area of steady rainfall to emerge, especially closer to the coast
during the day on Friday. By Friday evening much of the guidance is
now quicker and suggest the system pushes away to the northeast for
Friday night, with perhaps just a few lingering showers.
There are questions concerning the first half of next weekend, and
whether high pressure northwest of the region and build in enough to
keep most of the day on Saturday dry. The global model consensus has
low pressure approaching again, not much unlike its predecessor for
Saturday night into Sunday. So for now, it appears the first half of
the weekend will be the better half. Although the global
guidance was suggesting an inverted trough set up along the
eastern seaboard by Saturday night which could train moisture
northward sooner that expected by late in the day on Saturday.
Temperatures overall throughout the forecast period will average
below normal for this time of the year.
&&
.AVIATION /18Z MONDAY THROUGH SATURDAY/...
...Gusty Winds and Strong Convection Likely on Tuesday...
A strong cold front over the Great Lakes tonight will move
through the terminals Tuesday afternoon.
Manly VFR through tonight with MVFR conditions developing
during the morning. Ceilings could be more on the occasional
side, especially from NYC north and west. Potential for a line
of strong convection to move through the area from 18Z to 21Z
Tuesday.
N-NE winds around 10 kt will diminish late and possibly become
onshore just before 00Z at the coastal terminals. Elsewhere,
winds will likely become light and variable this evening with
a strengthening southerly flow toward daybreak. Southerly gusts
of 20 to 30 kt develop after 12Z, followed by WNW gusts up to
40 kt following an afternoon cold frontal passage.
.OUTLOOK FOR 18Z TUESDAY THROUGH SATURDAY...
.Tuesday Afternoon...Showers likely and a chance of strong
thunderstorms from 18Z to 21Z. WNW gusts 30 to 40 kt following a
cold frontal passage.
.Tuesday night-Wednesday...VFR. NW winds gusts 30-40 kt early,
diminishing to 25-30 kt.
.Thursday...Mainly VFR during the day, MVFR or lower with rain
developing late afternoon into the night.
.Friday...IFR or lower in rain in the morning, improving to VFR
in the afternoon.
.Saturday...Mainly VFR. Chance of rain late.
&&
.MARINE...
SCA remains in effect through tonight on the eastern ocean
waters, but trimmed it back to today only W of Fire Island
Inlet, with seas lingering in the 3-5 ft range and NE winds
gusting to 25 kt as offshore low pressure passes to the SE.
Winds veer S tonight ahead of a potent frontal system, with at
least SCA conds on all waters. Issued a gale watch for the
ocean and the Long Island south shore bays, as S-SW pre-frontal
flow daytime Tue could gust to 35 kt, followed by NW flow at
the same speeds Tue night after a cold frontal passage. These
winds could last into Wed out east and on some of the nearshore
waters.
For Wednesday night conditions will gradually settle below SCA
levels from W to E. A return flow will get established during
Thursday as S flow gradually increases. By Thursday night
marginal SCA conditions are expected out on the ocean. SCA
conditions will be more likely by Friday as low pressure
approaches.
&&
.HYDROLOGY...
Minimal hydrologic impact at most on Tue, with heavier showers
producing 1/4 to 1/2 inch of rain.
By Thursday night into Friday a storm system will bring rain to
the region. At this point in time the exact track and evolution
of this system is uncertain, but the potential exists for up to
1.0 to 1.5 inches which would likely result in poor drainage
and nuisance type impact.
&&
.EQUIPMENT...
NYC NOAA Weather Radio Station KWO35 (162.55 MHz) is undergoing
its final stages of testing, and is operating at full power.
&&
.OKX WATCHES/WARNINGS/ADVISORIES...
CT...Frost Advisory from 10 PM this evening to 8 AM EDT Tuesday for
CTZ011-012.
NY...Frost Advisory from 10 PM this evening to 8 AM EDT Tuesday for
NYZ079-081.
NJ...None.
MARINE...Gale Watch from Tuesday morning through late Tuesday night for
ANZ350-353-355.
Small Craft Advisory until 4 PM EDT this afternoon for ANZ355.
Gale Watch from Tuesday morning through Tuesday afternoon for
ANZ345.
Small Craft Advisory until 6 AM EDT Tuesday for ANZ350-353.
&&
SYNOPSIS...JE/Goodman
NEAR TERM...JC/Goodman
SHORT TERM...Goodman
LONG TERM...JE
AVIATION...DW
MARINE...JE/Goodman
HYDROLOGY...JE/Goodman
EQUIPMENT...Hazardous weather outlook, Apr 20, 10:28 AM EDT, 5 hours 23 minutes before
Hazardous Weather Outlook National Weather Service New York NY 1028 AM EDT Mon Apr 20 2020 ANZ330-335-338-340-CTZ005>010-NJZ002-004-006-103>108-NYZ067>075-078- 080-176>179-211430- Long Island Sound East of New Haven CT/Port Jefferson NY- Long Island Sound West of New Haven CT/Port Jefferson NY- New York Harbor-Peconic and Gardiners Bays-Northern Fairfield- Northern New Haven-Northern Middlesex-Northern New London- Southern Fairfield-Southern New Haven-Western Passaic- Eastern Passaic-Hudson-Western Bergen-Eastern Bergen-Western Essex- Eastern Essex-Western Union-Eastern Union-Orange-Putnam-Rockland- Northern Westchester-Southern Westchester-New York (Manhattan)-Bronx- Richmond (Staten Island)-Kings (Brooklyn)-Northwestern Suffolk- Southwestern Suffolk-Northern Queens-Northern Nassau-Southern Queens- Southern Nassau- 1028 AM EDT Mon Apr 20 2020 This Hazardous Weather Outlook is for Atlantic coastal waters, southern Connecticut, northeast New Jersey and southeast New York. .DAY ONE...Today and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. There is a low probability for widespread hazardous weather meeting NWS warning criteria Tuesday afternoon, as an approaching cold front triggers a few thunderstorms. The strongest storms could produce brief strong winds and hail. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches, warnings, and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. ANZ345-211430- South Shore Bays from Jones Inlet through Shinnecock Bay- 1028 AM EDT Mon Apr 20 2020 ...GALE WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY AFTERNOON... This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Today and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Watch. There is a low probability for widespread hazardous weather meeting NWS warning criteria Tuesday afternoon, as an approaching cold front triggers a few thunderstorms. The strongest storms could produce brief strong winds and hail. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches, warnings, and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. CTZ011-012-NYZ079-081-211430- Southern Middlesex-Southern New London-Northeastern Suffolk- Southeastern Suffolk- 1028 AM EDT Mon Apr 20 2020 ...FROST ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 8 AM EDT TUESDAY... This Hazardous Weather Outlook is for southern Connecticut and southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Frost Advisory. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Frost Advisory. There is a low probability for widespread hazardous weather meeting NWS warning criteria Tuesday afternoon, as an approaching cold front triggers a few thunderstorms. The strongest storms could produce brief strong winds and hail. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. Please relay any information about observed severe weather to the NWS while following all local, state, and CDC guidelines. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches, warnings, and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. ANZ350-353-355-211430- Moriches Inlet NY to Montauk Point NY out 20 nm- Fire Island Inlet NY to Moriches Inlet NY out 20 nm- Sandy Hook NJ to Fire Island Inlet NY out 20 nm- 1028 AM EDT Mon Apr 20 2020 ...GALE WATCH IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY NIGHT... This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Today and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Watch. There is a low probability for widespread hazardous weather meeting NWS warning criteria Tuesday afternoon, as an approaching cold front triggers a few thunderstorms. The strongest storms could produce brief strong winds and hail. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches, warnings, and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria.
The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 4:22 AM EDT | Frost Advisory | OKX | Suffolk | 28 hr |
| Apr 20, 4:24 AM EDT | Gale Watch | OKX | 12 hr | |
| Apr 20, 4:24 AM EDT | Small Craft Advisory | OKX | 12 hr | |
| Apr 20, 3:54 PM EDT | Gale Warning | OKX | 36 hr |
Nearby
Wind Advisories in New York, 2020Wind Advisories in New Jersey, 2020Wind Advisories in Connecticut, 2020Every wind advisory in 2020
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.