Alert archive / New York / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 13, NWS Buffalo, NY

June 1, 2018Livingston County, Monroe County, Ontario County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 1, 2018, 4:59 PM EDT for Livingston County, Monroe County, Ontario County, New York. It was in force for 61 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
Jun 1, 2018, 4:59 PM EDT (20:59 UTC)
Expired
Jun 1, 2018, 6:00 PM EDT
In force
61 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Livingston County, NY, Monroe County, NY, Ontario County, NY

The radar

The Buffalo radar (KBUF), 107 km from the middle of the area, began a volume at 21:02 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

TimeReportWhereRemark
Jun 1, 5:05 PM EDTHAIL 0.75Avon, NY

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 12:00Z, 9.0 hours before the alert went out and 104 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-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 2018-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 372 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2018-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
372 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
917 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

103 
WUUS51 KBUF 012059
SVRBUF
NYC051-055-069-012200-
/O.NEW.KBUF.SV.W.0013.180601T2059Z-180601T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
459 PM EDT FRI JUN 1 2018

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Northeastern Livingston County in western New York...
  South central Monroe County in western New York...
  Southwestern Ontario County in western New York...

* Until 600 PM EDT..

* At 458 PM EDT, a severe thunderstorm was located near Avon, or 10
  miles northeast of Geneseo, moving southeast at 20 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Avon, Honeoye Falls, Bristol, Lima, Naples, Honeoye, Hemlock and
  Rush.

# 

This includes Interstate 390 between exits 9 and 11.
 
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.

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

&&

LAT...LON 4258 7755 4293 7781 4302 7765 4276 7726
      4276 7732 4271 7735 4267 7736 4267 7737
      4265 7737 4257 7747
TIME...MOT...LOC 2058Z 321DEG 15KT 4291 7768 

HAIL...1.00IN
WIND...60MPH
 
$$

Welch
2 follow-up statements
565 
WWUS51 KBUF 012139
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
539 PM EDT FRI JUN 1 2018

NYC051-055-069-012200-
/O.CON.KBUF.SV.W.0013.000000T0000Z-180601T2200Z/
Livingston NY-Monroe NY-Ontario NY-
539 PM EDT FRI JUN 1 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR NORTHEASTERN LIVINGSTON...SOUTHEASTERN MONROE AND SOUTHWESTERN
ONTARIO COUNTIES...

At 538 PM EDT, a severe thunderstorm was located over Honeoye, or 14
miles east of Geneseo, moving southeast at 15 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Honeoye Falls, Bristol, Lima, Naples, Honeoye, Hemlock, West
Bloomfield and Canadice.

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.

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

&&

LAT...LON 4258 7755 4287 7771 4300 7761 4276 7726
      4276 7732 4271 7735 4267 7736 4267 7737
      4265 7737 4257 7747
TIME...MOT...LOC 2138Z 321DEG 15KT 4278 7753 

HAIL...0.75IN
WIND...60MPH
 
$$

JJR
950 
WWUS51 KBUF 012156
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
556 PM EDT FRI JUN 1 2018

NYC051-055-069-012205-
/O.EXP.KBUF.SV.W.0013.000000T0000Z-180601T2200Z/
Livingston NY-Monroe NY-Ontario NY-
556 PM EDT FRI JUN 1 2018

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

LAT...LON 4258 7755 4287 7771 4300 7761 4276 7726
      4276 7732 4271 7735 4267 7736 4267 7737
      4265 7737 4257 7747
TIME...MOT...LOC 2155Z 321DEG 15KT 4273 7748 

$$

Welch

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 1:10 PM EDTSpecial Weather StatementBUFWayne50 min
Jun 1, 1:24 PM EDTSevere Thunderstorm WarningBUFCayuga, Ontario, Wayne51 min
Jun 1, 2:07 PM EDTSpecial Weather StatementBUFCattaraugus68 min
Jun 1, 2:13 PM EDTFlash Flood WarningBUFCayuga, Wayne3 hr
Jun 1, 2:16 PM EDTSevere Thunderstorm WarningBUFCayuga, Wayne44 min
Jun 1, 3:28 PM EDTSpecial Marine WarningBUF76 min
Jun 1, 3:35 PM EDTSevere Thunderstorm WarningBUFCattaraugus, Chautauqua25 min
Jun 1, 3:53 PM EDTSpecial Weather StatementBUFAllegany22 min
Jun 1, 3:58 PM EDTFlash Flood WarningBUFCattaraugus, Chautauqua3 hr
Jun 1, 4:11 PM EDTSpecial Weather StatementBUFLivingston34 min
Jun 1, 4:38 PM EDTSpecial Weather StatementBUFGenesee37 min
Jun 1, 4:55 PM EDTSpecial Weather StatementBUFOntario65 min
Jun 1, 5:59 PM EDTFlash Flood WarningBUFLewis3 hr
Jun 1, 6:39 PM EDTAreal Flood WarningBUFCattaraugus, Chautauqua6 hr

Nearby

Severe Thunderstorm Warnings in New York, 2018Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.