Alert archive / New York / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 71, NWS Albany, NY

July 23, 20204 counties in New York

NWS Albany, NY issued this severe thunderstorm warning at Jul 23, 2020, 2:53 PM EDT for 4 counties in New York. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 23, 2020, 2:53 PM EDT (18:53 UTC)
Expired
Jul 23, 2020, 3:37 PM EDT
In force
44 min
Issued by
NWS Albany, NY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Albany County, NY, Montgomery County, NY, Schenectady County, NY, Schoharie County, NY

The radar

The Albany radar (KENX), 17 km from the middle of the area, began a volume at 18:57 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 6.9 hours before the alert went out and 27 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.

Skew-T log-pSkew-T log-p diagram, Albany, NY at 12:00Z on 2020-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 101 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2020-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
101 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
889 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

920 
WUUS51 KALY 231853
SVRALY
NYC001-057-093-095-232000-
/O.NEW.KALY.SV.W.0071.200723T1853Z-200723T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Albany NY
253 PM EDT Thu Jul 23 2020

The National Weather Service in Albany has issued a

* Severe Thunderstorm Warning for...
  Southwestern Schenectady County in east central New York...
  Central Albany County in east central New York...
  Northeastern Schoharie County in east central New York...
  Southeastern Montgomery County in eastern New York...

* Until 400 PM EDT.

* At 253 PM EDT, a severe thunderstorm was located over Delanson, or
  12 miles west of Rotterdam, moving southeast at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Albany, Rotterdam, Guilderland, Duanesburg, Berne, Voorheesville,
  Altamont, Delanson, New Scotland, Knox, Princetown, Clarksville,
  Esperance, Duane, East Berne, Rockwell Corners, Gifford, Quaker
  Street, Bramans Corners and Helderberg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

Please report hail size...damaging winds and reports of trees down to
the National Weather Service by email at Alb.Stormreport@noaa.gov...
On Facebook at www.facebook.com/nwsalbany or twitter @nwsalbany

LAT...LON 4275 7438 4290 7422 4271 7384 4252 7398
TIME...MOT...LOC 1853Z 297DEG 27KT 4275 7419 

HAIL...<.75IN
WIND...60MPH
 
$$

CS
6 follow-up statements
796 
WWUS51 KALY 231901
SVSALY

Severe Weather Statement
National Weather Service Albany NY
301 PM EDT Thu Jul 23 2020

NYC057-231911-
/O.CAN.KALY.SV.W.0071.000000T0000Z-200723T2000Z/
Montgomery NY-
301 PM EDT Thu Jul 23 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MONTGOMERY COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4285 7418 4286 7415 4271 7384 4252 7398
      4271 7432
TIME...MOT...LOC 1901Z 297DEG 27KT 4272 7412 

$$

NYC001-093-095-232000-
/O.CON.KALY.SV.W.0071.000000T0000Z-200723T2000Z/
Schenectady NY-Albany NY-Schoharie NY-
301 PM EDT Thu Jul 23 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR SOUTHWESTERN SCHENECTADY...CENTRAL ALBANY AND NORTHEASTERN
SCHOHARIE COUNTIES...

At 301 PM EDT, a severe thunderstorm was located over Duanesburg, or
9 miles southwest of Rotterdam, moving southeast at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Albany, Guilderland, Duanesburg, Berne, Voorheesville, Altamont,
Delanson, New Scotland, Knox, Princetown, Clarksville, Esperance,
Duane, East Berne, Meadowdale, Gifford, Quaker Street, Mariaville,
Reidsville and Rynex Corners.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4285 7418 4286 7415 4271 7384 4252 7398
      4271 7432
TIME...MOT...LOC 1901Z 297DEG 27KT 4272 7412 

HAIL...<.75IN
WIND...60MPH
 
$$

CS
922 
WWUS51 KALY 231909
SVSALY

Severe Weather Statement
National Weather Service Albany NY
309 PM EDT Thu Jul 23 2020

NYC001-093-095-232000-
/O.CON.KALY.SV.W.0071.000000T0000Z-200723T2000Z/
Schenectady NY-Albany NY-Schoharie NY-
309 PM EDT Thu Jul 23 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR SOUTH CENTRAL SCHENECTADY...CENTRAL ALBANY AND EAST CENTRAL
SCHOHARIE COUNTIES...

At 308 PM EDT, a severe thunderstorm was located near Altamont, or 8
miles southwest of Rotterdam, moving east at 20 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Albany, Guilderland, Duanesburg, Berne, Voorheesville, Altamont,
Delanson, New Scotland, Knox, Princetown, Clarksville, Duane, East
Berne, Meadowdale, Gifford, Quaker Street, Reidsville, Bramans
Corners, Dunnsville and New Salem.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4270 7422 4284 7412 4271 7384 4252 7398
      4266 7424
TIME...MOT...LOC 1908Z 290DEG 20KT 4272 7410 

HAIL...<.75IN
WIND...60MPH
 
$$

CS
027 
WWUS51 KALY 231913
SVSALY

Severe Weather Statement
National Weather Service Albany NY
313 PM EDT Thu Jul 23 2020

NYC095-231922-
/O.CAN.KALY.SV.W.0071.000000T0000Z-200723T2000Z/
Schoharie NY-
313 PM EDT Thu Jul 23 2020

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SCHOHARIE COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4272 7416 4283 7410 4271 7384 4252 7398
      4263 7418
TIME...MOT...LOC 1912Z 297DEG 27KT 4270 7406 

$$

NYC001-093-232000-
/O.CON.KALY.SV.W.0071.000000T0000Z-200723T2000Z/
Schenectady NY-Albany NY-
313 PM EDT Thu Jul 23 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR SOUTH CENTRAL SCHENECTADY AND CENTRAL ALBANY COUNTIES...

At 312 PM EDT, a severe thunderstorm was located over Altamont, or 7
miles southwest of Rotterdam, moving southeast at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Albany, Guilderland, Duanesburg, Berne, Voorheesville, Altamont, New
Scotland, Knox, Princetown, Clarksville, East Berne, Meadowdale,
Gifford, Reidsville, Bramans Corners, Dunnsville, New Salem,
Helderberg, Hartmans Corners and Fort Hunter.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4272 7416 4283 7410 4271 7384 4252 7398
      4263 7418
TIME...MOT...LOC 1912Z 297DEG 27KT 4270 7406 

HAIL...<.75IN
WIND...60MPH
 
$$

CS
829 
WWUS51 KALY 231922
SVSALY

Severe Weather Statement
National Weather Service Albany NY
322 PM EDT Thu Jul 23 2020

NYC093-231932-
/O.CAN.KALY.SV.W.0071.000000T0000Z-200723T2000Z/
Schenectady NY-
322 PM EDT Thu Jul 23 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL SCHENECTADY
COUNTY IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4275 7402 4276 7395 4271 7384 4252 7398
      4261 7415
TIME...MOT...LOC 1922Z 296DEG 27KT 4266 7397 

$$

NYC001-232000-
/O.CON.KALY.SV.W.0071.000000T0000Z-200723T2000Z/
Albany NY-
322 PM EDT Thu Jul 23 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR CENTRAL ALBANY COUNTY...

At 322 PM EDT, a severe thunderstorm was located over Voorheesville,
or 7 miles west of Delmar, moving southeast at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Albany, Guilderland, Voorheesville, Altamont, New Scotland,
Clarksville, East Berne, Meadowdale, Bensons Corners, Fullers,
Thompsons Lake, Parkers Corners, Guilderland Center, Thatcher State
Park, Reidsville, Westmere, Bramans Corners, Dunnsville, New Salem
and Wolf Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4275 7402 4276 7395 4271 7384 4252 7398
      4261 7415
TIME...MOT...LOC 1922Z 296DEG 27KT 4266 7397 

HAIL...<.75IN
WIND...60MPH
 
$$

CS
408 
WWUS51 KALY 231933
SVSALY

Severe Weather Statement
National Weather Service Albany NY
333 PM EDT Thu Jul 23 2020

NYC001-232000-
/O.CON.KALY.SV.W.0071.000000T0000Z-200723T2000Z/
Albany NY-
333 PM EDT Thu Jul 23 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR CENTRAL ALBANY COUNTY...

At 332 PM EDT, a severe thunderstorm was located over Delmar, moving
southeast at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Guilderland, Voorheesville, New Scotland and Westmere. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4270 7392 4269 7385 4260 7392 4263 7398
TIME...MOT...LOC 1932Z 297DEG 27KT 4262 7387 

HAIL...<.75IN
WIND...60MPH
 
$$

CS
924 
WWUS51 KALY 231937
SVSALY

Severe Weather Statement
National Weather Service Albany NY
337 PM EDT Thu Jul 23 2020

NYC001-231947-
/O.CAN.KALY.SV.W.0071.000000T0000Z-200723T2000Z/
Albany NY-
337 PM EDT Thu Jul 23 2020

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ALBANY COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

LAT...LON 4270 7392 4269 7385 4260 7392 4263 7398
TIME...MOT...LOC 1936Z 297DEG 27KT 4260 7382 

$$

CS

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.

NWS Albany, NY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 23, 1:42 PM EDT, 1 hour 11 minutes earlier.

Area forecast discussion, Jul 23, 1:42 PM EDT, 1 hour 11 minutes before
AREA FORECAST DISCUSSION
National Weather Service Albany NY
142 PM EDT Thu Jul 23 2020

.SYNOPSIS...
It will remain warm and muggy today with some breaks of
sunshine.   A cold front will bring showers and some strong
thunderstorms across the area this afternoon into this evening.
Drier and somewhat less humid conditions are expected for tomorrow,
with warm temperatures remaining in place through the weekend.

&&

.NEAR TERM /THROUGH TONIGHT/...
Heat Advisory issued for this afternoon/early evening for the
mid Hudson Valley and southern Litchfield County CT...

As of 130 PM EDT, 2 broken bands of showers/isolated
thunderstorms across the region; the first extending from the
Berkshires into the central Taconics and SE Catskills, likely
associated with a developing pre-frontal trough, while the
second is developing from the upper Hudson Valley into the
western Mohawk Valley, and this one is closer to the main cold
front.

Severe threat looks greatest with the southern band of
convection, where current ML CAPES are analyzed per SPC at
1000-2000 J/kg, amid deep layer shear of 25-30 KT. However,
still some severe threat with northern band as it tracks into
an area coincident with ML CAPES also 1000-2000 J/kg. 12Z/ALY
sounding indicated a cap around H600, and cores thus far have
remained relatively shallow, with 50 dbz cores generally
remaining below 20,000 FT. However, area across mid Hudson
Valley/NW CT and southern Berkshires is now experiencing a good
deal of sunshine, and expect instability to build further, as
surface dewpoints pool into the lower/mid 70s with sfc temps
rising to the upper 80s to lower 90s.

Based on increased temps/dewpoints for the mid Hudson Valley and
lower elevations of Litchfield County, have issued a short fused
heat advisory for these areas until 7 PM.

Main threat from thunderstorms will be some damaging wind gusts
with any water loaded cores and/or cell mergers which can
congeal into bowing segments.

Heavy rain will also remain a threat with any
showers/thunderstorms given PWAT's of 1.5-1.75". In fact, some
areas within the Capital Region had a quick 0.75-1.5 inches with
thunderstorms this morning.

By later this evening, storms will be moving south/east of the
region and weakening and diurnal cooling takes over. The surface
cold front will be slowing down, but will be crossing the areas
from west to east for tonight. It may take until late in the
overnight to fully cross, so dewpoints may remain elevated
overnight. Will need to watch for some more fog development,
especially in any spots that see rainfall today. Lows will
generally be in the mid to upper 60s, although some upper 50s to
low 60s possible for the Adirondacks.

&&

.SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/...
Surface high pressure will build from the Great Lakes on Friday
towards the Northeast for Saturday. With enough subsidence in
place, no precip is expected with rain-free conditions for both
days. Although dewpoints will be slightly lower on Friday, they
will start to creep back up over the weekend, as a light
southerly flow starts to return.

Skies should be partly to mostly clear through the short term
period and some valley fog may form during the overnights in the
typical locations. Daytime temps will be in the mid 70s to mid
80s for Friday and upper 70s to upper 80s for Saturday, with the
warmest temps in the mid Hudson Valley.

&&

.LONG TERM /SUNDAY THROUGH WEDNESDAY/...
The extended forecast begins hot and dry with a mid and upper level
ridge over the central and eastern CONUS impacting the Northeast.
However, the forecast becomes unsettled for eastern NY and western
New England for the early to middle portion of next week, as the
ridge gradually weakens with an upper level trough and its
associated cold front bringing chances of showers and thunderstorms.

Sunday...Mid and upper level heights will be slightly above normal
across NY and New England.  H850 temps will be +1 to +2 STDEVs above
normal based on the 00Z GEFS.  The 00Z GFS indicates H850 temps may
get into the +17C to +20C range.   Sfc high pressure will be
centered near the TN Valley and Mid Atlantic States.  Hot and humid
conditions are expected with highs in the upper 80s to lower 90s in
the valley areas, and upper 70s to mid 80s over the mtns. Sfc dewpts
will be mainly in the upper 50s to mid and spotty upper 60s. The sfc
dewpts increase into the 60s to lower 70s, and heat indices may get
closes to advisory levels /mid 90s/ in the mid Hudson Valley Sunday
afternoon. The strong subsidence from the mid and upper level ridge
will suppress any convection, except for a few showers over the
western Adirondacks late in the day.

Sunday night into Monday...A mid and upper level trough begins to
amplify over s-central Canada and the Upper Midwest.  The mid level
flow begins to flatten, as a prefrontal disturbance increases the
threat for some diurnally time showers and thunderstorms.  A few
showers and thunderstorms in the west to northwest flow may impact
locations west and northwest of the Capital Region Sunday night. The
sfc dewpts increase into the 60s to lower 70s, and heat indices may
flirt with advisory levels /mid 90s/ in the mid Hudson Valley Monday
pm. Overall, a hot an humid afternoon is expected with above normal
temps with perhaps a few strong thunderstorms with moderate amounts
of instability possible.  Lows will be muggy in the 60s to lower
70s, and highs will be in the mid 80s to lower 90s in many locations
below 1000 ft, and 70s to lower 80s above 1000 ft in elevation.

Monday Night into Tuesday...The 00Z GFS is a little faster than the
00Z ECMWF with the cold frontal passage.  Mid and upper level
heights fall upstream with the approaching upper trough over the
Great Lakes Region and southeast Canada.  We favored the slower 00Z
ECMWF solution with a good chance of showers and thunderstorms once
again. The amounts of instability available will determine how
strong the storms maybe. PWATs ahead of the front are +1 to +2
STDEVs above normal. Some locally heavy rain is possible. The warm
anomaly at H850 diminishes with the cold frontal passage. Temps will
run above normal, but will not be as hot as previous days with highs
in the 70s to lower 80s over the higher terrain and western Mohawk
Valley, and mid to upper 80s in most of the other valley spots.

Tuesday night into Wednesday...A trend to normal temps and humidity
levels for late July, as cyclonic flow aloft will impact the region
with a positively tilted trough axis over southeast Canada into the
Great Lakes Region and OH Valley...and then moving across the
Northeast. A slight to low chance of showers is still possible and
even a few thunderstorms, but coverage should be less than Monday
and Tuesday. After lows in the mid 50s to mid 60s, expect highs in
the 70s and 80s with some upper 60s over the Adirondack Park.
Humidity levels should decrease and be a bit more comfortable.

&&

.AVIATION /18Z THURSDAY THROUGH TUESDAY/...
Lines of showers and thunderstorms will move across the area
this afternoon into early this evening. These storms will most
likely bring one or two brief periods of MVFR to IFR cigs and
vsbys to the TAF sites this afternoon along with a heavy
downpour and westerly wind gusts over 25 kts. These storms will
weaken and move east of our TAF sites by around 00z, followed by
some clearing. Areas of low cloud and fog will then develop
late tonight with areas of IFR cigs and vsbys developing mainly
from 08z to 12z. Conditions will then improve after 12z with VFR
conditions across the entire area by 15z Friday.

Winds will be variable at less than 10 kts this afternoon into
tonight, except locally gusty from the west at speeds of 25 kts
or more near any thundertorms this afternoon.

Outlook...

Friday Night: No Operational Impact. NO SIG WX.
Saturday: No Operational Impact. NO SIG WX.
Saturday Night: No Operational Impact. NO SIG WX.
Sunday: No Operational Impact. NO SIG WX.
Sunday Night: Low Operational Impact. NO SIG WX.
Monday: Moderate Operational Impact. Chance of SHRA...TSRA.
Monday Night: Moderate Operational Impact. Chance of SHRA...TSRA.
Tuesday: Moderate Operational Impact. Chance of SHRA...TSRA.

&&

.FIRE WEATHER...
Many areas are seeing fog/mist this morning, with widespread dew
formation. RH values will only lower to 60 to 70 percent this
afternoon with showers and thunderstorms around. Many spots
will see a wetting rainfall from these showers and storms.
Although winds will be light today, they may be higher within or
near any thunderstorm.

RH values will recover back to 100 percent tonight with fog/dew
formation. Drier air is expected to move into the area for
Friday with RH values lowering to 45 to 55 percent during the
afternoon hours. North to northeast winds will be 5 mph or less
on Friday.

&&

.HYDROLOGY...
Thunderstorms generally brought under an inch of rain on
Wednesday, although some localized narrow totals of over an
inch occurred across parts of the Adirondacks, Saratoga Region,
northern Taconics, southern VT, northeastern Berkshires and
northern Litchfield County. While this much needed rain helped
some areas, our area continues to be in D0/D1 drought
conditions and can use some widespread precipitation.

Showers and thunderstorms are expected this afternoon into this
evening. PWATs remain around two inches (about 2 STD above
normal) and some locally heavy downpours are possible within any
shower or thunderstorms. Rainfall rates may reach up two inches
per hour, which may cause localized flooding concerns if this
occurs over an urban area or a spot that sees repeated
convection. Based on hi-res guidance, training storms are not
expected to be a major issue across our area due to decent flow
aloft, so the threat for flash flooding appears to be rather
isolated for today. However, thunderstorm rainfall will be
capable of producing ponding of water in low lying and urban
areas very quickly due to the intense rates. Thunderstorm
coverage should not be great enough to cause any issues on main
stems rivers, which should only see modest rises if at all
through the day.

Dry weather is then expected for Friday into the weekend. This
will allow river and stream levels to remain fairly steady. The
next chance for scattered showers and thunderstorms appears to
be on Monday.

For details on specific area rivers and lakes, including observed
and forecast river stages and lake elevations, please visit the
Advanced Hydrologic Prediction Service /AHPS/ graphs on our
website.

&&

.ALY WATCHES/WARNINGS/ADVISORIES...
CT...Heat Advisory until 7 PM EDT this evening for CTZ013.
NY...Heat Advisory until 7 PM EDT this evening for NYZ059-060-064-
     065.
MA...None.
VT...None.

&&

SYNOPSIS...Frugis
NEAR TERM...Frugis/KL
SHORT TERM...Frugis
LONG TERM...Wasula
AVIATION...MSE/Wasula
FIRE WEATHER...Frugis
HYDROLOGY...Frugis
Hazardous weather outlook, Jul 23, 1:44 PM EDT, 1 hour 9 minutes before
Hazardous Weather Outlook
National Weather Service Albany NY
144 PM EDT Thu Jul 23 2020

CTZ001-MAZ001-025-NYZ039>041-043-047>054-058-061-063-066-082>084-
VTZ013>015-241100-
Northern Litchfield-Northern Berkshire-Southern Berkshire-
Southern Fulton-Montgomery-Northern Saratoga-Northern Washington-
Schoharie-Western Schenectady-Eastern Schenectady-Southern Saratoga-
Western Albany-Eastern Albany-Western Rensselaer-Eastern Rensselaer-
Western Greene-Eastern Columbia-Western Ulster-Eastern Dutchess-
Northern Fulton-Southeast Warren-Southern Washington-Bennington-
Western Windham-Eastern Windham-
144 PM EDT Thu Jul 23 2020

This Hazardous Weather Outlook is for northern Litchfield County in
northwestern Connecticut, western Massachusetts, southern Vermont,
and the eastern Catskills, Schoharie Valley, central and eastern
Mohawk Valley, Capital Region, Glens Falls Saratoga Region and
Taconics of eastern New York.

.DAY ONE...This afternoon and tonight.

There is a slight risk for severe thunderstorms this afternoon into
the early evening. Damaging winds would be the main threat with any
thunderstorm, although large hail cannot be ruled out. Some locally
heavy rainfall will occur with the thunderstorms, which may cause
poor drainage flooding of low lying areas. An isolated flash flood
cannot be ruled out.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

There is a chance of thunderstorms on Monday and Tuesday, mainly
during the afternoon and evening hours.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon. Please relay any
information about severe weather to the NWS while following local,
state and CDC guidelines.

NYZ032-033-038-042-241100-
Northern Herkimer-Hamilton-Southern Herkimer-Northern Warren-
144 PM EDT Thu Jul 23 2020

This Hazardous Weather Outlook is for the western Mohawk Valley and
the southern and western Adirondacks of east central New York.

.DAY ONE...This afternoon and tonight.

There is a marginal risk for severe thunderstorms this afternoon
into the early evening. Damaging winds would be the main threat with
any thunderstorm, although large hail cannot be ruled out. Some
locally heavy rainfall will occur with the thunderstorms, which may
cause poor drainage flooding of low lying areas. An isolated flash
flood cannot be ruled out.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

There is a chance of thunderstorms on Monday and Tuesday, mainly
during the afternoon and evening hours.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon. Please relay any
information about severe weather to the NWS while following local,
state and CDC guidelines.

CTZ013-NYZ059-060-064-065-241100-
Southern Litchfield-Eastern Greene-Western Columbia-Eastern Ulster-
Western Dutchess-
144 PM EDT Thu Jul 23 2020

...HEAT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for southern Litchfield County in
northwestern Connecticut, and the mid Hudson Valley of eastern New
York.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Heat Advisory.

There is a Slight Risk for severe thunderstorms this afternoon into
the early evening. Damaging winds would be the main threat with any
thunderstorm, although large hail cannot be ruled out. Some locally
heavy rainfall will occur with the thunderstorms, which may cause
poor drainage flooding of low lying areas. An isolated flash flood
cannot be ruled out.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

There is a chance of thunderstorms on Monday and Tuesday, mainly
during the afternoon and evening hours.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon. Please relay any
information about severe weather to the NWS while following local,
state and CDC guidelines.

In the hours before

Special weather statement, Jul 23, 1:56 PM EDT, 57 minutes before
Special Weather Statement
National Weather Service Albany NY
156 PM EDT Thu Jul 23 2020

MAZ025-231830-
Southern Berkshire-
156 PM EDT Thu Jul 23 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN BERKSHIRE COUNTY...

At 155 PM EDT, a strong thunderstorm was located near Becket, or 14
miles southeast of Pittsfield, moving east at 20 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Becket, Otis, Washington, Tyringham, Becket Center, West Becket, East
Otis, Algerie Four Corners, Bonny Rigg Corners and North Otis.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4217 7303 4225 7323 4238 7313 4237 7307
      4236 7307 4233 7306 4232 7304 4231 7303
      4231 7300 4225 7300
TIME...MOT...LOC 1755Z 285DEG 18KT 4229 7310

CS
Special weather statement, Jul 23, 2:16 PM EDT, 37 minutes before
Special Weather Statement
National Weather Service Albany NY
216 PM EDT Thu Jul 23 2020

MAZ025-NYZ059>061-231915-
Southern Berkshire-Eastern Columbia-Eastern Greene-Western Columbia-
216 PM EDT Thu Jul 23 2020

...A LINE OF SLOW MOVING STRONG THUNDERSTORMS WILL AFFECT SOUTHERN
BERKSHIRE... SOUTHERN COLUMBIA AND SOUTHEASTERN GREENE COUNTIES...

At 216 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Chester to near Sheffield to near
Catskill. Movement was east at 10 mph.

Winds in excess of 40 mph are possible with these storms.

Locations impacted include...
Great Barrington, Catskill, Claverack, Livingston, Copake, Sheffield,
Clermont, Becket, Otis, Philmont, Sandisfield, Claverack-Red Mills,
Housatonic, Germantown, Hillsdale, New Marlborough, Taghkanic,
Monterey, Alford and Tyringham.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4215 7303 4215 7307 4212 7306 4211 7307
      4209 7307 4206 7306 4208 7393 4213 7391
      4215 7395 4223 7398 4227 7335 4235 7307
      4233 7306 4231 7303 4231 7300 4225 7300
TIME...MOT...LOC 1816Z 291DEG 10KT 4231 7299 4214 7332 4217 7384

CS
Special weather statement, Jul 23, 2:19 PM EDT, 34 minutes before
Special Weather Statement
National Weather Service Albany NY
219 PM EDT Thu Jul 23 2020

NYZ040-231900-
Montgomery-
219 PM EDT Thu Jul 23 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN MONTGOMERY
COUNTY...

At 218 PM EDT, a strong thunderstorm was located near Canajoharie,
moving east at 25 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Amsterdam, Glen, Charleston, Fultonville, Auriesville, Lykers,
Rockwell Corners, Sprakers, Scotch Bush, Flat Creek, Young Corners,
Lost Valley, Market Corners, Davis Corners, Burtonsville, and
Minaville.

This includes Interstate 90 near exit 27.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4296 7454 4292 7409 4290 7408 4282 7424
      4280 7426 4278 7429 4277 7446 4282 7458
TIME...MOT...LOC 1818Z 283DEG 21KT 4286 7447

MSE
Special weather statement, Jul 23, 2:35 PM EDT, 18 minutes before
Special Weather Statement
National Weather Service Albany NY
235 PM EDT Thu Jul 23 2020

NYZ042-043-083-231900-
Northern Washington-Southeast Warren-Northern Warren-
235 PM EDT Thu Jul 23 2020

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL WARREN AND CENTRAL
WASHINGTON COUNTIES...

At 234 PM EDT, a strong thunderstorm was located near Bolton Landing,
or 8 miles northeast of Lake George Village, moving east at 35 mph.

Winds in excess of 40 mph are possible with this storm.

This storm will be near...
  Comstock around 245 PM EDT.
  Whitehall around 250 PM EDT.
  Poultney Village around 300 PM EDT.

Other locations impacted by this storm include Shelving Rock,
Cleverdale, South Bay, Middle Granville, Low Hampton, North
Granville, South Bay Village, Snody Dock, Truthville and Raceville.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4361 7329 4358 7330 4356 7326 4353 7324
      4341 7325 4339 7353 4341 7361 4338 7361
      4338 7364 4356 7369 4363 7342 4359 7343
      4357 7339 4358 7338 4359 7339 4362 7337
      4363 7330
TIME...MOT...LOC 1834Z 258DEG 29KT 4349 7357

SND
Special weather statement, Jul 23, 2:45 PM EDT, 8 minutes before
Special Weather Statement
National Weather Service Albany NY
245 PM EDT Thu Jul 23 2020

CTZ001-MAZ025-231915-
Northern Litchfield-Southern Berkshire-
245 PM EDT Thu Jul 23 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL LITCHFIELD AND
SOUTH CENTRAL BERKSHIRE COUNTIES...

At 245 PM EDT, a strong thunderstorm was located over Ashley Falls,
or 9 miles south of Great Barrington, moving southeast at 25 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Norfolk, Canaan, Falls Village, Ashley Falls, Colebrook, Huntsville,
Sodom, South Canaan, East Sheffield, Wangum Village, North Colebrook,
Gomorrah, Mill Brook, Robertsville, Alander, Taconic, Joyceville,
Amesville, North Green and East Canaan.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4191 7335 4207 7348 4206 7306 4204 7306
      4204 7303 4201 7301 4197 7303 4197 7299
TIME...MOT...LOC 1845Z 300DEG 22KT 4206 7329

CS
Special weather statement, Jul 23, 2:49 PM EDT, 4 minutes before
Special Weather Statement
National Weather Service Albany NY
249 PM EDT Thu Jul 23 2020

NYZ040-047>049-051-052-231915-
Eastern Albany-Eastern Schenectady-Schoharie-Western
Schenectady-Montgomery-Western Albany-
249 PM EDT Thu Jul 23 2020

...A STRONG THUNDERSTORM WILL AFFECT SCHENECTADY...NORTHWESTERN
ALBANY...NORTHEASTERN SCHOHARIE AND SOUTHEASTERN MONTGOMERY
COUNTIES...

At 248 PM EDT, a strong thunderstorm was located over Delanson, or 10
miles south of Amsterdam, moving east at 30 mph.

Winds in excess of 40 mph are possible with this storm.

This storm will be near...
  Pattersonville-Rotterdam Junction around 300 PM EDT.
  Altamont and Rotterdam Junction around 305 PM EDT.
  Rotterdam around 310 PM EDT.
  Schenectady, Scotia, Guilderland, Niskayuna, East Glenville and
  Alplaus around 315 PM EDT.

This includes the following highways...
 Interstate 88 between exits 23 and 25.
 Interstate 90 between exits 25 and 26.
 Interstate 890 between exits 1a and 9.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4290 7396 4291 7393 4291 7390 4263 7388
      4268 7434 4287 7434
TIME...MOT...LOC 1848Z 267DEG 25KT 4279 7419

SND

The office that day

Everything else NWS Albany, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 22, 8:02 PM EDTSpecial Weather StatementALYRensselaer28 min
Jul 23, 11:08 AM EDTSpecial Weather StatementALYRensselaer52 min
Jul 23, 11:32 AM EDTSpecial Weather StatementALYRensselaer43 min
Jul 23, 12:53 PM EDTSpecial Weather StatementALYColumbia37 min
Jul 23, 1:19 PM EDTHeat AdvisoryALYColumbia, Dutchess, Greene, Ulster5 hr
Jul 23, 1:19 PM EDTSpecial Weather StatementALYColumbia26 min
Jul 23, 1:43 PM EDTSpecial Weather StatementALYColumbia32 min
Jul 23, 2:16 PM EDTSpecial Weather StatementALYColumbia59 min
Jul 23, 2:19 PM EDTSpecial Weather StatementALYMontgomery41 min
Jul 23, 2:35 PM EDTSpecial Weather StatementALYWashington25 min
Jul 23, 2:49 PM EDTSpecial Weather StatementALYSchenectady26 min
Jul 23, 3:11 PM EDTSpecial Weather StatementALYWashington34 min
Jul 23, 3:35 PM EDTSpecial Weather StatementALYAlbany25 min
Jul 23, 3:52 PM EDTSpecial Weather StatementALYRensselaer38 min
Jul 23, 4:01 PM EDTSevere Thunderstorm WarningALYAlbany, Rensselaer44 min
Jul 23, 5:08 PM EDTSevere Thunderstorm WarningALYColumbia67 min
Jul 23, 5:46 PM EDTSpecial Weather StatementALYColumbia29 min
Jul 23, 5:58 PM EDTSpecial Weather StatementALYColumbia32 min
Jul 23, 6:16 PM EDTSpecial Weather StatementALYColumbia29 min
Jul 23, 6:31 PM EDTSevere Thunderstorm WarningALYColumbia, Dutchess59 min
Jul 23, 6:37 PM EDTAreal Flood AdvisoryALYColumbia, Dutchess2 hr
Jul 23, 7:22 PM EDTSpecial Weather StatementALYDutchess53 min
Jul 23, 7:47 PM EDTSpecial Weather StatementALYUlster28 min
Jul 23, 7:48 PM EDTSpecial Weather StatementALYWashington57 min
Jul 23, 7:58 PM EDTAreal Flood AdvisoryALYDutchess, Ulster103 min

Nearby

Severe Thunderstorm Warnings in New York, 2020Every severe thunderstorm warning 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.