Alert archive / New York / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 49, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Aug 17, 2018, 9:49 PM EDT for Jefferson County, Oswego County, New York. It was in force for 56 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 17, 2018, 9:49 PM EDT (01:49 UTC)
- Expired
- Aug 17, 2018, 10:45 PM EDT
- In force
- 56 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Jefferson County, NY, Oswego County, NY
The radar
The Ft Drum radar (KTYX), 36 km from the middle of the area, began a volume at 01:53 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
Albany, NY (KALY), launched 00:00Z, 1.8 hours before the alert went out and 217 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.
- Mixed-layer CAPE
- 1163 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 742 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 5.2
The text
As transmitted.
296
WUUS51 KBUF 180149
SVRBUF
NYC045-075-180245-
/O.NEW.KBUF.SV.W.0049.180818T0149Z-180818T0245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
949 PM EDT FRI AUG 17 2018
The National Weather Service in Buffalo has issued a
* Severe Thunderstorm Warning for...
Southwestern Jefferson County in central New York...
Northeastern Oswego County in central New York...
* Until 1045 PM EDT..
* At 949 PM EDT, a severe thunderstorm was located 10 miles north of
Nine Mile Point, or 10 miles west of Sandy Island Beach State
Park, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Sandy Island Beach State Park, Stony Point, Pulaski, Adams,
Redfield, Selkirk Shores State Park, Mexico Point State Park and
Adams Center.
This includes Interstate 81 between exits 35 and 44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
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 4395 7582 4388 7581 4388 7584 4379 7585
4379 7580 4347 7576 4348 7581 4346 7583
4352 7649 4356 7645 4357 7636 4356 7631
4356 7628 4358 7626 4369 7626 4379 7629
4386 7639 4384 7644 4385 7646
TIME...MOT...LOC 0149Z 274DEG 28KT 4368 7642
HAIL...<.75IN
WIND...60MPH
$$
RSH2 follow-up statements
306
WWUS51 KBUF 180217
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
1017 PM EDT FRI AUG 17 2018
NYC045-075-180245-
/O.CON.KBUF.SV.W.0049.000000T0000Z-180818T0245Z/
Jefferson NY-Oswego NY-
1017 PM EDT FRI AUG 17 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR SOUTHWESTERN JEFFERSON AND NORTHEASTERN OSWEGO COUNTIES...
At 1017 PM EDT, a severe thunderstorm was located near Southwick
Beach State Park, moving east at 25 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Sandy Island Beach State Park, Stony Point, Pulaski, Adams, Redfield,
Adams Center, Henderson Harbor and Southwick Beach State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4395 7582 4388 7581 4388 7584 4379 7585
4379 7580 4347 7576 4358 7626 4369 7626
4379 7629 4384 7636 4386 7639 4384 7644
4385 7646
TIME...MOT...LOC 0217Z 270DEG 23KT 4370 7620
HAIL...<.75IN
WIND...70MPH
$$
RSH953
WWUS51 KBUF 180248
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
1048 PM EDT FRI AUG 17 2018
NYC045-075-180256-
/O.EXP.KBUF.SV.W.0049.000000T0000Z-180818T0245Z/
Jefferson NY-Oswego NY-
1048 PM EDT FRI AUG 17 2018
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN JEFFERSON AND
NORTHEASTERN OSWEGO COUNTIES HAS EXPIRED...
The area storms that prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been allowed to expire. However gusty
winds over 30 mph and very heavy rain are still expected
with this area of thunderstorms through 11:15 PM.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Buffalo.
LAT...LON 4395 7582 4388 7581 4388 7584 4379 7585
4379 7580 4347 7576 4358 7626 4369 7626
4379 7629 4384 7636 4386 7639 4384 7644
4385 7646
TIME...MOT...LOC 0245Z 274DEG 28KT 4369 7597
$$
RSHThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 9:34 PM EDT | Special Marine Warning | BUF | 41 min | |
| Aug 18, 1:10 AM EDT | Special Weather Statement | BUF | Genesee | 65 min |
| Aug 18, 3:09 AM EDT | Areal Flood Warning | BUF | Erie, Genesee, Niagara, Orleans | 6 hr |
| Aug 18, 4:37 AM EDT | Beach Hazards Statement | BUF | Monroe, Orleans, Wayne | 9 hr |
| Aug 18, 4:37 AM EDT | Small Craft Advisory | BUF | 9 hr | |
| Aug 18, 5:55 AM EDT | Special Weather Statement | BUF | Chautauqua | 80 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.