Alert archive / Massachusetts / Special Marine Warnings in 2012
Special Marine Warning 21, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this special marine warning at Jun 26, 2012, 1:04 AM EDT. 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
- Jun 26, 2012, 1:04 AM EDT (05:04 UTC)
- Expired
- Jun 26, 2012, 2:00 AM EDT
- In force
- 56 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
The radar
The Boston radar (KBOX), 129 km from the middle of the area, began a volume at 05:07 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
Chatham, MA (KCHH), launched 00:00Z, 5.1 hours before the alert went out and 49 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
- 254 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 476 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 155 m²/s²
- 0-3 km storm-relative helicity
- 148 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
963
WHUS51 KBOX 260504
SMWBOX
ANZ254-255-271-272-260600-
/O.NEW.KBOX.MA.W.0021.120626T0504Z-120626T0600Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
104 AM EDT TUE JUN 26 2012
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
* SPECIAL MARINE WARNING FOR...
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD AND
NANTUCKET OVER ATLANTIC COASTAL WATERS...
PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA OUT 20 NM OVER
ATLANTIC COASTAL WATERS...
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 35 NM
OFFSHORE OVER ATLANTIC COASTAL WATERS...
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 45 NM
OFFSHORE OVER ATLANTIC COASTAL WATERS...
INCLUDING THE COASTAL WATERS EAST OF NANTUCKET...THE COASTAL WATERS
SOUTH OF NANTUCKET AND SURFSIDE ON NANTUCKET...
* UNTIL 200 AM EDT
* AT 106 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM...PRODUCING STRONG WINDS 34 KNOTS OR GREATER 7 NM
SOUTH OF THE COASTAL WATERS SOUTH OF NANTUCKET...MOVING NORTHEAST
AT 25 KNOTS.
EXPECT STRONG GUSTY WINDS...ROUGH WAVES AND DEADLY LIGHTNING. SEEK
SAFE HARBOR IMMEDIATELY. IF CAUGHT ON THE OPEN WATER STAY BELOW DECK
IF POSSIBLE. KEEP AWAY FROM METAL OBJECTS.
&&
LAT...LON 4072 6987 4082 7038 4125 7014 4126 6997
4135 7002 4151 7000 4181 6983 4163 6925
TIME...MOT...LOC 0504Z 205DEG 27KT 4102 7000
$$
KJCThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 9:37 PM EDT | Special Weather Statement | BOX | Norfolk, Suffolk | 38 min |
| Jun 26, 3:26 AM EDT | Small Craft Advisory | BOX | 43 hr | |
| Jun 26, 2:32 PM EDT | Special Weather Statement | BOX | Plymouth | 28 min |
| Jun 26, 2:42 PM EDT | Special Weather Statement | BOX | Essex | 33 min |
| Jun 26, 3:15 PM EDT | Special Weather Statement | BOX | Plymouth | 30 min |
| Jun 26, 3:23 PM EDT | Special Weather Statement | BOX | Plymouth | 37 min |
| Jun 26, 3:39 PM EDT | Special Weather Statement | BOX | Barnstable | 36 min |
| Jun 26, 4:50 PM EDT | Special Weather Statement | BOX | Plymouth | 25 min |
Nearby
Special Marine Warnings in Massachusetts, 2012Every special marine warning in 2012
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.