Alert archive / New York / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 48, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Aug 15, 2018, 4:48 PM EDT for Jefferson County, New York. It was in force for 42 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 15, 2018, 4:48 PM EDT (20:48 UTC)
- Expired
- Aug 15, 2018, 5:30 PM EDT
- In force
- 42 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 60.0 mph
County Jefferson County, NY
The radar
The Ft Drum radar (KTYX), 67 km from the middle of the area, began a volume at 20:52 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 12:00Z, 8.8 hours before the alert went out and 248 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
- 114 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 657 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 125 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
155
WUUS51 KBUF 152048
SVRBUF
NYC045-152130-
/O.NEW.KBUF.SV.W.0048.180815T2048Z-180815T2130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
448 PM EDT WED AUG 15 2018
The National Weather Service in Buffalo has issued a
* Severe Thunderstorm Warning for...
Northeastern Jefferson County in central New York...
* Until 530 PM EDT..
* At 447 PM EDT, a severe thunderstorm was located near Clayton, or
25 miles northwest of Fort Drum, moving east at 25 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* Locations impacted include...
Kring Point State Park, Wellesley Island State Park, Redwood,
Alexandria Bay, Theresa, Plessis, Oxbow and Muskellunge Lake.
This includes Interstate 81 between exits 50 and 52.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4440 7583 4439 7584 4429 7562 4419 7572
4429 7614 4430 7610 4433 7605 4435 7601
4434 7597 4440 7586
TIME...MOT...LOC 2047Z 278DEG 20KT 4430 7616
HAIL...1.75IN
WIND...60MPH
$$
Church2 follow-up statements
535
WWUS51 KBUF 152106
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
506 PM EDT WED AUG 15 2018
NYC045-152130-
/O.CON.KBUF.SV.W.0048.000000T0000Z-180815T2130Z/
Jefferson NY-
506 PM EDT WED AUG 15 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR NORTHEASTERN JEFFERSON COUNTY...
At 506 PM EDT, a severe thunderstorm was located over Wellesley
Island State Park, or 19 miles northwest of Fort Drum, moving east at
25 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Kring Point State Park, Wellesley Island State Park, Redwood,
Alexandria Bay, Theresa, Plessis, Oxbow and Muskellunge Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4440 7583 4439 7584 4429 7562 4419 7572
4429 7614 4430 7610 4433 7605 4435 7601
4434 7597 4440 7586
TIME...MOT...LOC 2106Z 278DEG 20KT 4428 7601
HAIL...1.75IN
WIND...60MPH
$$
Church192
WWUS51 KBUF 152130
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
530 PM EDT WED AUG 15 2018
NYC045-152139-
/O.EXP.KBUF.SV.W.0048.000000T0000Z-180815T2130Z/
Jefferson NY-
530 PM EDT WED AUG 15 2018
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JEFFERSON COUNTY
WILL EXPIRE AT 530 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. However small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Buffalo.
LAT...LON 4440 7583 4439 7584 4429 7562 4419 7572
4429 7614 4430 7610 4433 7605 4435 7601
4434 7597 4440 7586
TIME...MOT...LOC 2129Z 278DEG 20KT 4426 7585
$$
ChurchThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 3:29 PM EDT | Special Weather Statement | BUF | Ontario | 46 min |
| Aug 15, 4:19 PM EDT | Special Marine Warning | BUF | 56 min | |
| Aug 15, 4:29 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson | 61 min |
| Aug 15, 4:44 PM EDT | Special Marine Warning | BUF | 31 min | |
| Aug 15, 5:12 PM EDT | Special Marine Warning | BUF | 93 min | |
| Aug 15, 5:34 PM EDT | Special Weather Statement | BUF | Jefferson | 56 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.