Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 90, NWS Buffalo, NY

August 4, 2017Genesee County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 4, 2017, 1:05 PM EDT for Genesee County, New York. It was in force for 31 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: Aug 4, 2017, 1:05 PM EDT (17:05 UTC)
Expired: Aug 4, 2017, 1:36 PM EDT
In force: 31 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Genesee County, NY

The radar

The Buffalo radar (KBUF), 36 km from the middle of the area, began a volume at 17:05 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 12:00Z, 5.1 hours before the alert went out and 34 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: 243 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 895 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 179 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted.

293 
WUUS51 KBUF 041705
SVRBUF
NYC037-041800-
/O.NEW.KBUF.SV.W.0090.170804T1705Z-170804T1800Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
105 PM EDT FRI AUG 4 2017

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Central Genesee County in western New York...

* Until 200 PM EDT.

* At 104 PM EDT, a severe thunderstorm was located over Akron, or
  near Clarence, moving east at 45 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Batavia, Pembroke, Byron, Oakfield, Stafford, Alabama, Corfu and
  Elba.

This includes Interstate 90 between exits 48A and 48.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4293 7847 4313 7846 4313 7803 4293 7806
TIME...MOT...LOC 1704Z 255DEG 37KT 4299 7848 

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

Zaff

1 follow-up statement

013 
WWUS51 KBUF 041736
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
136 PM EDT FRI AUG 4 2017

NYC037-041746-
/O.CAN.KBUF.SV.W.0090.000000T0000Z-170804T1800Z/
Genesee NY-
136 PM EDT FRI AUG 4 2017

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL GENESEE COUNTY IS
CANCELLED...
                
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 has been cancelled.

A severe thunderstorm watch remains in effect until 900 PM EDT for
western New York.

LAT...LON 4293 7847 4313 7846 4313 7803 4293 7806
TIME...MOT...LOC 1735Z 255DEG 37KT 4308 7804 

$$

Zaff

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 9:28 PM EDT	Small Craft Advisory	BUF		54 hr
Aug 4, 8:45 AM EDT	Special Weather Statement	BUF	Wayne	30 min
Aug 4, 8:52 AM EDT	Special Marine Warning	BUF		53 min
Aug 4, 11:40 AM EDT	Special Marine Warning	BUF		65 min
Aug 4, 11:53 AM EDT	Special Weather Statement	BUF	Wayne	37 min
Aug 4, 12:22 PM EDT	Special Marine Warning	BUF		53 min
Aug 4, 12:27 PM EDT	Severe Thunderstorm Warning	BUF	Erie	63 min
Aug 4, 12:55 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	50 min
Aug 4, 1:08 PM EDT	Special Marine Warning	BUF		52 min
Aug 4, 1:13 PM EDT	Severe Thunderstorm Warning	BUF	Niagara, Orleans	62 min
Aug 4, 1:41 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Wyoming	49 min
Aug 4, 1:59 PM EDT	Special Marine Warning	BUF		61 min
Aug 4, 3:00 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	45 min
Aug 4, 3:22 PM EDT	Special Marine Warning	BUF		53 min
Aug 4, 3:38 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	57 min
Aug 4, 3:42 PM EDT	Special Marine Warning	BUF		63 min
Aug 4, 4:02 PM EDT	Special Marine Warning	BUF		118 min
Aug 4, 4:14 PM EDT	Special Marine Warning	BUF		61 min
Aug 4, 4:17 PM EDT	Special Marine Warning	BUF		88 min
Aug 4, 4:26 PM EDT	Special Marine Warning	BUF		34 min
Aug 4, 4:27 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Oswego	33 min
Aug 4, 4:45 PM EDT	Special Marine Warning	BUF		2 hr
Aug 4, 4:46 PM EDT	Special Marine Warning	BUF		89 min
Aug 4, 5:00 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara	45 min
Aug 4, 5:04 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego	41 min
Aug 4, 5:23 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Livingston	67 min
Aug 4, 5:39 PM EDT	Special Marine Warning	BUF		36 min
Aug 4, 5:51 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	54 min
Aug 4, 6:38 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	52 min
Aug 4, 7:09 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	66 min
Aug 4, 7:15 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Ontario, Oswego, Wayne	60 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.