Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 126, NWS Buffalo, NY

September 4, 2017Monroe County, Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 4, 2017, 11:06 PM EDT for Monroe County, Wayne County, New York. It was in force for 39 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: Sep 4, 2017, 11:06 PM EDT (03:06 UTC)
Expired: Sep 4, 2017, 11:45 PM EDT
In force: 39 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Monroe County, NY, Wayne County, NY

The radar

The Buffalo radar (KBUF), 103 km from the middle of the area, began a volume at 03:05 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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 3.1 hours before the alert went out and 100 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 94 J/kg
Mixed-layer CIN: -227 J/kg
Mixed-layer LCL: 1561 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 339 m²/s²
0-3 km storm-relative helicity: 515 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

128 
WUUS51 KBUF 050306
SVRBUF
NYC055-117-050345-
/O.NEW.KBUF.SV.W.0126.170905T0306Z-170905T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
1106 PM EDT MON SEP 4 2017

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Western Wayne County in western New York...
  Central Monroe County in western New York...

* until 1145 PM EDT.

* At 1105 PM EDT, a severe thunderstorm was located over Scottsville,
  or near Chili, moving east at 60 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect wind damage to trees and power lines. 

* Locations impacted include...
  Rochester, Greece, Irondequoit, Chili, East Rochester, Webster,
  Fairport and Brighton.

This includes the following highways...
 Interstate 390 near exit 12.
 Interstate 90 near exit 46.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4300 7788 4320 7789 4333 7722 4321 7702
      4306 7711
TIME...MOT...LOC 0305Z 255DEG 51KT 4305 7778 

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

HITCHCOCK

2 follow-up statements

862 
WWUS51 KBUF 050323
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
1123 PM EDT MON SEP 4 2017

NYC055-117-050345-
/O.CON.KBUF.SV.W.0126.000000T0000Z-170905T0345Z/
Wayne NY-Monroe NY-
1123 PM EDT MON SEP 4 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT
FOR WESTERN WAYNE AND SOUTHEASTERN MONROE COUNTIES...

At 1123 PM EDT, a severe thunderstorm was located over Penfield, or
near East Rochester, moving east at 60 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect wind damage to trees and power lines. 

Locations impacted include...
Rochester, Irondequoit, East Rochester, Webster, Fairport, Brighton,
Ontario and Henrietta.

This includes the following highways...
 Interstate 390 near exit 12.
 Interstate 90 near exit 46.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4301 7777 4315 7760 4326 7759 4333 7722
      4321 7702 4306 7711
TIME...MOT...LOC 0323Z 252DEG 53KT 4315 7745 

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

HITCHCOCK

548 
WWUS51 KBUF 050342
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
1142 PM EDT MON SEP 4 2017

NYC055-117-050352-
/O.EXP.KBUF.SV.W.0126.000000T0000Z-170905T0345Z/
Wayne NY-Monroe NY-
1142 PM EDT MON SEP 4 2017

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN WAYNE AND SOUTHEASTERN
MONROE COUNTIES WILL EXPIRE AT 1145 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning will be allowed to expire.

LAT...LON 4301 7777 4315 7760 4326 7759 4333 7722
      4321 7702 4306 7711
TIME...MOT...LOC 0342Z 255DEG 51KT 4322 7710 

$$

HITCHCOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 4, 9:47 PM EDT	Special Marine Warning	BUF		88 min
Sep 4, 10:12 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	63 min
Sep 4, 10:20 PM EDT	Special Weather Statement	BUF	Erie, Genesee, Wyoming	40 min
Sep 4, 10:24 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Orleans, Wyoming	32 min
Sep 4, 10:55 PM EDT	Beach Hazards Statement	BUF	Cayuga, Jefferson, Oswego	12 hr
Sep 4, 10:59 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua	61 min
Sep 4, 11:08 PM EDT	Special Marine Warning	BUF		52 min
Sep 4, 11:24 PM EDT	Special Marine Warning	BUF		66 min
Sep 4, 11:33 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	57 min
Sep 4, 11:51 PM EDT	Special Marine Warning	BUF		39 min
Sep 4, 11:57 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	63 min
Sep 5, 12:07 AM EDT	Flash Flood Warning	BUF	Cattaraugus, Chautauqua	3 hr
Sep 5, 12:18 AM EDT	Severe Thunderstorm Warning	BUF	Allegany, Livingston	30 min
Sep 5, 12:24 AM EDT	Severe Thunderstorm Warning	BUF	Ontario, Wayne	21 min
Sep 5, 10:19 AM EDT	Special Marine Warning	BUF		41 min
Sep 5, 10:23 AM EDT	Special Weather Statement	BUF	Allegany	37 min
Sep 5, 10:38 AM EDT	Special Weather Statement	BUF	Allegany	37 min
Sep 5, 5:46 PM EDT	Special Marine Warning	BUF		59 min

Nearby

Severe Thunderstorm Warnings in New York, 2017 Every severe thunderstorm warning in 2017

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.