Alert archive / New York / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 70, NWS Buffalo, NY

July 19, 2013Niagara County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 19, 2013, 8:32 PM EDT for Niagara County, New York. It was in force for 43 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 19, 2013, 8:32 PM EDT (00:32 UTC)
Expired: Jul 19, 2013, 9:15 PM EDT
In force: 43 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Niagara County, NY

The radar

The Buffalo radar (KBUF), 20 km from the middle of the area, began a volume at 00:32 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.

What was reported inside it

Time	Report	Where	Remark
Jul 19, 9:04 PM EDT	TSTM WND DMG	Cambria, NY	MANY TREES AND POWER LINES DOWNED. SAUNDERS SETTLEMENT RD CLOSED DUE TO DOWNED POWER LINES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 0.5 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: 1370 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 1402 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

639 
WUUS51 KBUF 200032
SVRBUF
NYC063-200115-
/O.NEW.KBUF.SV.W.0070.130720T0032Z-130720T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
832 PM EDT FRI JUL 19 2013

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NIAGARA COUNTY IN WESTERN NEW YORK

* UNTIL 915 PM EDT

* AT 828 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR YOUNGSTOWN...OR 12 MILES
  NORTH OF NIAGARA FALLS...AND MOVING EAST AT 50 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  YOUNGSTOWN...
  SANBORN...
  LEWISTON...
  LOCKPORT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF ON OR NEAR ONTARIO...GET OUT OF THE WATER AND MOVE INDOORS OR 
INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE OUT TO 15 MILES 
FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU ARE 
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER NOW. 
DON'T BE CAUGHT ON THE WATER IN A THUNDERSTORM!

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
SATURDAY MORNING FOR WESTERN NEW YORK.

&&

LAT...LON 4314 7905 4327 7907 4333 7884 4326 7846
      4308 7847 4310 7855 4307 7860 4309 7864
      4308 7865 4309 7873 4307 7874 4307 7880
      4303 7885 4310 7908
TIME...MOT...LOC 0031Z 288DEG 45KT 4325 7901

$$

HIBBERT

2 follow-up statements

828 
WWUS51 KBUF 200059 RRA
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
859 PM EDT FRI JUL 19 2013

NYC063-200115-
/O.CON.KBUF.SV.W.0070.000000T0000Z-130720T0115Z/
NIAGARA NY-
859 PM EDT FRI JUL 19 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR NIAGARA COUNTY...

AT 855 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR GASPORT...OR NEAR 
LOCKPORT...MOVING EAST AT 50 MPH. ANOTHER STORM WILL CROSS THE 
NORTHWESTERN EDGE OF THE COUNTY WITH THE POTENTIAL OF STRONG 
DAMAGING WIND AND TORRENTIAL RAIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

RADAR INDICATED THAT VERY HEAVY RAIN AND GUSTY WINDS WERE STILL 
POSSIBLE FROM THE THUNDERSTORM.

&&

LAT...LON 4314 7905 4327 7907 4333 7884 4326 7846
      4308 7847 4310 7855 4307 7860 4309 7864
      4308 7865 4309 7873 4307 7874 4307 7880
      4303 7885 4310 7908
TIME...MOT...LOC 0058Z 288DEG 45KT 4314 7857

$$

HIBBERT

150 
WWUS51 KBUF 200113
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
913 PM EDT FRI JUL 19 2013

NYC063-200123-
/O.EXP.KBUF.SV.W.0070.000000T0000Z-130720T0115Z/
NIAGARA NY-
913 PM EDT FRI JUL 19 2013

...THE SEVERE THUNDERSTORM WARNING FOR NIAGARA COUNTY WILL EXPIRE AT
915 PM EDT...

RADAR INDICATED THAT VERY HEAVY RAIN AND GUSTY WINDS ARE STILL 
POSSIBLE THROUGH THE EVENING.

LAT...LON 4314 7905 4327 7907 4333 7884 4326 7846
      4308 7847 4310 7855 4307 7860 4309 7864
      4308 7865 4309 7873 4307 7874 4307 7880
      4303 7885 4310 7908
TIME...MOT...LOC 0113Z 288DEG 45KT 4308 7832

$$

HIBBERT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 8:01 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	59 min
Jul 19, 8:03 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	57 min
Jul 19, 8:20 PM EDT	Areal Flood Advisory	BUF	Erie, Genesee, Niagara, Orleans	3 hr
Jul 19, 8:49 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Wyoming	56 min
Jul 19, 8:51 PM EDT	Flash Flood Warning	BUF	Erie, Niagara	3 hr
Jul 19, 8:58 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	32 min
Jul 19, 9:25 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara	65 min
Jul 19, 9:49 PM EDT	Special Marine Warning	BUF		56 min
Jul 19, 9:56 PM EDT	Special Marine Warning	BUF		64 min
Jul 19, 10:06 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	54 min
Jul 19, 10:21 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Wyoming	54 min
Jul 19, 10:33 PM EDT	Areal Flood Advisory	BUF	Erie, Genesee, Wyoming	3 hr
Jul 19, 10:49 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Wyoming	56 min
Jul 20, 12:46 AM EDT	Special Marine Warning	BUF		59 min
Jul 20, 1:18 AM EDT	Areal Flood Advisory	BUF	Erie, Genesee, Niagara, Orleans	3 hr
Jul 20, 1:21 AM EDT	Special Marine Warning	BUF		84 min
Jul 20, 2:43 AM EDT	Special Weather Statement	BUF	Ontario	32 min
Jul 20, 3:45 AM EDT	Special Marine Warning	BUF		60 min
Jul 20, 4:02 AM EDT	Severe Thunderstorm Warning	BUF	Erie	43 min
Jul 20, 4:49 AM EDT	Small Craft Advisory	BUF		9 hr

Nearby

Severe Thunderstorm Warnings in New York, 2013 Every severe thunderstorm warning in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.