Alert archive / New York / Special Marine Warnings in 2021
Special Marine Warning 9, NWS Buffalo, NY
NWS Buffalo, NY issued this special marine warning at Jun 13, 2021, 7:24 PM EDT. It was in force for 66 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
- Jun 13, 2021, 7:24 PM EDT (23:24 UTC)
- Expired
- Jun 13, 2021, 8:30 PM EDT
- In force
- 66 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 49.0 mph
The radar
The Buffalo radar (KBUF), 21 km from the middle of the area, began a volume at 23:26 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
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.4 hours before the alert went out and 24 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2252 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
631
WHUS51 KBUF 132324
SMWBUF
LEZ020-LOZ030-140030-
/O.NEW.KBUF.MA.W.0009.210613T2324Z-210614T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Buffalo NY
724 PM EDT Sun Jun 13 2021
The National Weather Service in Buffalo has issued a
* Special Marine Warning for...
The Upper and Lower Niagara River and Buffalo Harbor...
* Until 830 PM EDT.
* At 724 PM EDT, a severe thunderstorm was located near Grand
Island, moving east at 15 knots.
HAZARD...Wind gusts to nearly 50 knots and large hail.
SOURCE...Radar.
IMPACT...Small craft could be damaged in briefly higher winds and
suddenly higher waves. Large hail could result in
structural damage.
* Locations impacted include...
Grand Island.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Frequent lightning is occurring with this storm. If caught on the
open water stay below deck if possible, keep away from ungrounded
metal objects.
&&
LAT...LON 4310 7906 4312 7907 4315 7904 4315 7899
4311 7900 4310 7892 4308 7886 4304 7883
4301 7884 4298 7888 4290 7885 4291 7891
4293 7891 4296 7893 4296 7896 4299 7902
4302 7902 4306 7900 4308 7907
TIME...MOT...LOC 2324Z 281DEG 16KT 4307 7911
HAIL...>.75IN
WIND...49KTS
$$
EAJ2 follow-up statements
832
FZUS71 KBUF 132351
MWSBUF
Marine Weather Statement
National Weather Service Buffalo NY
751 PM EDT Sun Jun 13 2021
LEZ020-LOZ030-140030-
/O.CON.KBUF.MA.W.0009.000000T0000Z-210614T0030Z/
751 PM EDT Sun Jun 13 2021
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 830 PM EDT...
For the following areas...
The Upper and Lower Niagara River and Buffalo Harbor...
At 750 PM EDT, a strong thunderstorm was located over Grand Island,
moving east at 15 knots.
HAZARD...Wind gusts to 40 knots and small hail.
SOURCE...Radar indicated.
IMPACT...Small craft could be damaged in briefly higher winds and
suddenly higher waves.
Locations impacted include...
Grand Island.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Frequent lightning is occurring with this storm. If caught on the
open water stay below deck if possible, keep away from ungrounded
metal objects.
&&
LAT...LON 4310 7906 4312 7907 4315 7904 4315 7899
4311 7900 4310 7892 4308 7886 4304 7883
4301 7884 4298 7888 4290 7885 4291 7891
4293 7891 4296 7893 4296 7896 4299 7902
4302 7902 4306 7900 4308 7907
TIME...MOT...LOC 2350Z 281DEG 16KT 4305 7895
HAIL...<.75IN
WIND...40KTS
$$
EAJ792
FZUS71 KBUF 140022
MWSBUF
Marine Weather Statement
National Weather Service Buffalo NY
822 PM EDT Sun Jun 13 2021
LEZ020-LOZ030-140031-
/O.EXP.KBUF.MA.W.0009.000000T0000Z-210614T0030Z/
822 PM EDT Sun Jun 13 2021
...THE SPECIAL MARINE WARNING WILL EXPIRE AT 830 PM EDT...
The affected areas were...
The Upper and Lower Niagara River and Buffalo Harbor...
The thunderstorm has weakened and no longer poses a significant
threat to boaters.
LAT...LON 4310 7906 4312 7907 4315 7904 4315 7899
4311 7900 4310 7892 4308 7886 4304 7883
4301 7884 4298 7888 4290 7885 4291 7891
4293 7891 4296 7893 4296 7896 4299 7902
4302 7902 4306 7900 4308 7907
TIME...MOT...LOC 0021Z 281DEG 16KT 4302 7876
$$
EAJThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 4:24 PM EDT | Special Weather Statement | BUF | Cattaraugus | 36 min |
| Jun 13, 6:29 PM EDT | Special Weather Statement | BUF | Niagara | 46 min |
| Jun 13, 6:31 PM EDT | Special Marine Warning | BUF | 59 min | |
| Jun 13, 6:42 PM EDT | Severe Thunderstorm Warning | BUF | Niagara | 63 min |
| Jun 13, 7:23 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Niagara | 35 min |
Nearby
Special Marine Warnings in New York, 2021Every special marine warning in 2021
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.