Alert archive / New York / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 31, NWS Buffalo, NY

July 5, 2018Erie County, Niagara County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 5, 2018, 10:14 PM EDT for Erie County, Niagara County, New York. It was in force for 29 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 5, 2018, 10:14 PM EDT (02:14 UTC)
Expired: Jul 5, 2018, 10:43 PM EDT
In force: 29 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Erie County, NY, Niagara County, NY

The radar

The Buffalo radar (KBUF), 19 km from the middle of the area, began a volume at 02:14 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, 2.2 hours before the alert went out and 23 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: 923 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 917 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -25 m²/s²
0-3 km storm-relative helicity: 27 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

079 
WUUS51 KBUF 060214
SVRBUF
NYC029-063-060300-
/O.NEW.KBUF.SV.W.0031.180706T0214Z-180706T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
1014 PM EDT THU JUL 5 2018

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Northeastern Erie County in western New York...
  Southwestern Niagara County in western New York...

* Until 1100 PM EDT..

* At 1014 PM EDT, severe thunderstorms were located along a line
  extending from near Lockport to 7 miles southwest of Niagara Falls,
  moving southeast at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Buffalo, Cheektowaga, Niagara Falls, North Tonawanda, Clarence,
  Lockport, Kenmore and Depew.

# 

This includes Interstate 90 between exits 53 and 49.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4311 7906 4312 7907 4315 7904 4325 7869
      4288 7847 4287 7892 4291 7890 4293 7891
      4296 7893 4296 7896 4299 7901 4302 7902
      4306 7900 4307 7901 4308 7908
TIME...MOT...LOC 0214Z 310DEG 36KT 4315 7875 4300 7912 

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

RSH

1 follow-up statement

249 
WWUS51 KBUF 060243
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
1043 PM EDT THU JUL 5 2018

NYC029-063-060253-
/O.CAN.KBUF.SV.W.0031.000000T0000Z-180706T0300Z/
Erie NY-Niagara NY-
1043 PM EDT THU JUL 5 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ERIE AND
SOUTHWESTERN NIAGARA COUNTIES IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled.

LAT...LON 4311 7906 4312 7907 4315 7904 4325 7869
      4288 7847 4287 7892 4291 7890 4293 7891
      4296 7893 4296 7896 4299 7901 4302 7902
      4306 7900 4307 7901 4308 7908
TIME...MOT...LOC 0242Z 310DEG 36KT 4298 7848 4283 7885 

$$

RSH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 8:58 PM EDT	Special Marine Warning	BUF		81 min
Jul 5, 9:16 PM EDT	Special Marine Warning	BUF		29 min
Jul 5, 9:52 PM EDT	Special Weather Statement	BUF	Niagara	38 min
Jul 5, 10:19 PM EDT	Special Marine Warning	BUF		32 min
Jul 5, 10:34 PM EDT	Beach Hazards Statement	BUF	Cayuga, Monroe, Oswego, Wayne	15 hr
Jul 6, 1:02 AM EDT	Special Weather Statement	BUF	Lewis	58 min
Jul 6, 3:34 PM EDT	Small Craft Advisory	BUF		4 hr

Nearby

Severe Thunderstorm Warnings in New York, 2018 Every severe thunderstorm warning in 2018

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.