Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 1, NWS Buffalo, NY

February 25, 2017Jefferson County, Lewis County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Feb 25, 2017, 12:23 PM EST for Jefferson County, Lewis County, New York. It was in force for 31 min. 4 reports 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: Feb 25, 2017, 12:23 PM EST (17:23 UTC)
Expired: Feb 25, 2017, 12:54 PM EST
In force: 31 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Jefferson County, NY, Lewis County, NY

The radar

The Ft Drum radar (KTYX), 47 km from the middle of the area, began a volume at 17:25 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
Feb 25, 12:27 PM EST	FUNNEL CLOUD	1 Sw Redwood, NY
Feb 25, 12:27 PM EST	TSTM WND DMG	2 Wsw Theresa, NY	TREES AND WIRES DOWN NEAR INTERSECTION OF RT 37 AND RT 411
Feb 25, 12:27 PM EST	TSTM WND DMG	Theresa, NY	MOBILE TRAILER HOUSE DAMAGED AND PUSHED OFF THE FOUNDATION SILVER STREET AND RT 46.
Feb 25, 12:27 PM EST	TSTM WND DMG	Theresa, NY	TREES DOWN ON RED LAKE RD.

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

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 5.4 hours before the alert went out and 225 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: 3 J/kg
Mixed-layer CIN: -449 J/kg
Mixed-layer LCL: 881 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 263 m²/s²
0-3 km storm-relative helicity: 358 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

432 
WUUS51 KBUF 251723
SVRBUF
NYC045-049-251815-
/O.NEW.KBUF.SV.W.0001.170225T1723Z-170225T1815Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
1223 PM EST SAT FEB 25 2017

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Jefferson County in central New York...
  Central Lewis County in central New York...

* Until 115 PM EST.

* At 1222 PM EST, a line of severe thunderstorms were located along 
  a line extending from near Clayton to near Barnes Corners, moving 
  east at 75 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Watertown, Fort Drum, Carthage, Lowville, West Carthage, Clayton,
  Glen Park and Herrings.

This includes Interstate 81 between exits 45 and 52.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4410 7517 4378 7513 4375 7587 4429 7614
      4430 7610 4435 7601 4434 7597 4437 7591
      4438 7582
TIME...MOT...LOC 1722Z 257DEG 64KT 4419 7607 4378 7588 

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

TMA

1 follow-up statement

422 
WWUS51 KBUF 251754
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
1254 PM EST SAT FEB 25 2017

NYC045-049-251804-
/O.CAN.KBUF.SV.W.0001.000000T0000Z-170225T1815Z/
Jefferson NY-Lewis NY-
1254 PM EST SAT FEB 25 2017

...THE SEVERE THUNDERSTORM WARNING FOR JEFFERSON AND CENTRAL LEWIS
COUNTIES IS CANCELLED...
    
The storms which prompted the warning have moved out of the area.
Therefore the warning has been cancelled.

LAT...LON 4410 7517 4378 7513 4375 7587 4429 7614
      4430 7610 4435 7601 4434 7597 4437 7591
      4438 7582
TIME...MOT...LOC 1752Z 257DEG 64KT 4431 7534 4390 7515 

$$

TMA

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 25, 6:03 AM EST	Areal Flood Warning	BUF	Jefferson, Lewis, Oswego	24 hr
Feb 25, 11:00 AM EST	Special Weather Statement	BUF	Wayne	60 min
Feb 25, 11:12 AM EST	Special Marine Warning	BUF		63 min
Feb 25, 11:40 AM EST	Special Weather Statement	BUF	Jefferson, Oswego	65 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.