Alert archive / Michigan / Special Marine Warnings in 2008

Special Marine Warning 21, NWS Gaylord, MI

June 10, 2008

NWS Gaylord, MI issued this special marine warning at Jun 10, 2008, 6:25 PM EDT. It was in force for 65 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 10, 2008, 6:25 PM EDT (22:25 UTC)
Expired: Jun 10, 2008, 7:30 PM EDT
In force: 65 min
Issued by: NWS Gaylord, MI
Area: Storm-based polygon

The radar

The NCL Michigan radar (KAPX), 108 km from the middle of the area, began a volume at 22:25 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

Alpena, MI (KAPX), launched 12:00Z, 10.4 hours before the alert went out and 146 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 93 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 864 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: -29 m²/s²
0-3 km storm-relative helicity: -9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WHUS53 KAPX 102225
SMWAPX
LHZ347-361-102330-
/O.NEW.KAPX.MA.W.0021.080610T2225Z-080610T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
625 PM EDT TUE JUN 10 2008

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* SPECIAL MARINE WARNING FOR...
  OPEN WATERS OF LAKE HURON NORTH OF PRESQUE ISLE LIGHT...
  NEARSHORE WATERS FROM 5 NAUTICAL MILES EAST OF THE MACKINAC BRIDGE
  TO PRESQUE ISLE LIGHT...

* UNTIL 730 PM EDT

* AT 617 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM CAPABLE OF PRODUCING LARGE HAIL AND WINDS OVER 35
  KNOTS...3 NAUTICAL MILES NORTHWEST OF POINT NIPIGON...MOVING EAST
  AT 26 KNOTS.

* MARINE LOCATIONS IMPACTED INCLUDE...
  BOIS BLANC ISLAND...
  NINE MILE POINT...

MARINERS CAN EXPECT GUSTY WINDS...HIGH WAVES...DANGEROUS LIGHTNING
AND HEAVY RAIN. IF POSSIBLE...BOATERS SHOULD SEEK SAFE HARBOR
IMMEDIATELY UNTIL THIS STORM HAS PASSED. BE SURE ALL PASSENGERS ARE
WEARING FLOTATION DEVICES.

LAT...LON 4556 8415 4562 8421 4565 8429 4565 8447
      4572 8460 4589 8459 4590 8427 4587 8403
      4588 8390 4586 8384 4585 8367 4583 8359
      4578 8362 4576 8345 4547 8338
TIME...MOT...LOC 2225Z 268DEG 26KT 4575 8451

$$

3 follow-up statements

000 
FZUS73 KAPX 102249
MWSAPX

MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
649 PM EDT TUE JUN 10 2008

LHZ347-361-102330-
/O.CON.KAPX.MA.W.0021.000000T0000Z-080610T2330Z/
649 PM EDT TUE JUN 10 2008

...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 730 PM EDT FOR
THE FOLLOWING AREA...

NEARSHORE WATERS FROM 5 NAUTICAL MILES EAST OF THE MACKINAC BRIDGE TO
PRESQUE ISLE LIGHT...
OPEN WATERS OF LAKE HURON NORTH OF PRESQUE ISLE LIGHT...

AT 642 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM CAPABLE OF PRODUCING LARGE HAIL AND WINDS
OVER 35 KNOTS...6 NAUTICAL MILES NORTHWEST OF NINE MILE POINT...OR
ABOUT 2 NAUTICAL MILES NORTHWEST OF CORDWOOD POINT...MOVING EAST AT
30 KNOTS.

MARINE LOCATIONS IMPACTED INCLUDE...
  NINE MILE POINT.

MARINERS CAN EXPECT GUSTY WINDS...HIGH WAVES...DANGEROUS LIGHTNING
AND HEAVY RAIN. IF POSSIBLE...BOATERS SHOULD SEEK SAFE HARBOR
IMMEDIATELY UNTIL THIS STORM HAS PASSED. BE SURE ALL PASSENGERS ARE
WEARING FLOTATION DEVICES.

REPORT SEVERE WEATHER TO THE COAST GUARD OR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
OFFICE.

LAT...LON 4547 8338 4556 8415 4562 8421 4565 8429
      4565 8447 4572 8449 4583 8440 4586 8426
      4586 8392 4583 8384 4582 8368 4580 8362
      4578 8362 4576 8345
TIME...MOT...LOC 2249Z 268DEG 26KT 4569 8426

$$

000 
FZUS73 KAPX 102319
MWSAPX

MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
720 PM EDT TUE JUN 10 2008

LHZ347-361-102330-
/O.CON.KAPX.MA.W.0021.000000T0000Z-080610T2330Z/
720 PM EDT TUE JUN 10 2008

...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 730 PM EDT FOR
THE FOLLOWING AREA...

NEARSHORE WATERS FROM 5 NAUTICAL MILES EAST OF THE MACKINAC BRIDGE TO
PRESQUE ISLE LIGHT...
OPEN WATERS OF LAKE HURON NORTH OF PRESQUE ISLE LIGHT...

AT 715 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM CAPABLE OF PRODUCING LARGE HAIL...OVER OPEN
WATERS OF LAKE HURON NORTH OF PRESQUE ISLE LIGHT...OR ABOUT 12
NAUTICAL MILES NORTH OF FORTY MILE POINT...MOVING EAST AT 30 KNOTS.

MARINERS CAN EXPECT GUSTY WINDS...HIGH WAVES...DANGEROUS LIGHTNING
AND HEAVY RAIN. IF POSSIBLE...BOATERS SHOULD SEEK SAFE HARBOR
IMMEDIATELY UNTIL THIS STORM HAS PASSED. BE SURE ALL PASSENGERS ARE
WEARING FLOTATION DEVICES.

REPORT SEVERE WEATHER TO THE COAST GUARD OR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
OFFICE.

LAT...LON 4554 8399 4585 8389 4583 8384 4582 8368
      4579 8362 4578 8362 4578 8352 4576 8352
      4577 8346 4575 8344 4574 8345 4549 8339
TIME...MOT...LOC 2320Z 275DEG 30KT 4567 8379

$$

000 
FZUS73 KAPX 102334
MWSAPX

MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
734 PM EDT TUE JUN 10 2008

LHZ347-361-102344-
/O.EXP.KAPX.MA.W.0021.000000T0000Z-080610T2330Z/
734 PM EDT TUE JUN 10 2008

...SPECIAL MARINE WARNING HAS EXPIRED FOR THE FOLLOWING AREA...

NEARSHORE WATERS FROM 5 NAUTICAL MILES EAST OF THE MACKINAC BRIDGE TO
PRESQUE ISLE LIGHT...
OPEN WATERS OF LAKE HURON NORTH OF PRESQUE ISLE LIGHT...

AT 734 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE
THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED. THE WARNING HAS
THEREFORE BEEN ALLOWED TO EXPIRE.

LAT...LON 4554 8399 4585 8389 4583 8384 4582 8368
      4579 8362 4578 8362 4578 8352 4576 8352
      4577 8346 4575 8344 4574 8345 4549 8339
TIME...MOT...LOC 2319Z 275DEG 30KT 4567 8380

$$

What forecasters said that day

The local office's own words before this special marine warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Gaylord, MI wrote its last area forecast discussion before this special marine warning went out at Jun 10, 3:40 PM EDT, 2 hours 45 minutes earlier.

Area forecast discussion, Jun 10, 3:40 PM EDT, 2 hours 45 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GAYLORD MI
340 PM EDT TUE JUN 10 2008

.DISCUSSION...SECOND 500 MB WAVE THAT WAS TRAILING THE ONE THIS
MORNING IS NOW PRODUCING THUNDERSTORMS OVER THE REGION. THE MAIN
AREA THAT WE HAVE BEEN WATCHING IS ALONG THE LAKE BREEZE BOUNDARY IN
E UPPER. MOST HAVE BEEN OUT OF THE AREA, BUT THE MOVEMENT MIGHT
BRING THEM INTO OUR AREA OVER THE NEXT HOUR. THE SECOND AREA IS
ALONG THE M-55 CORRIDOR WITH HALF INCH HAIL REPORTED NEAR MOORESTOWN
IN MISSAUKEE COUNTY. THERE IS A BIT OF DIURNAL CU IN N WISCONSIN.

TONIGHT...AS THE 500 MB WAVE MOVES OUT, WITH THE SFC TROUGH AND
WE GET PAST PEAK HEATING, THE CLOUDS TO THE WEST AND THE
THUNDERSTORMS OVER THE REGION WILL FADE AWAY AS THE INSTABILITY
DIMINISHES FROM THE LACK OF SOLAR HEATING. THERE WILL BE A BREAK
FOR A WHILE OVERNIGHT, THEN A WARM FRONT WITH WEAK FORCING MOVES
OVER THE REGION IN THE EARLY MORNING. THE GFS THINKS THAT IT WILL
RAIN WHILE THE NAM IS LESS BULLISH. SO HAVE PUT IN LOW CHANCE POPS
FOR NW LOWER AS THIS WEAK WARM WING MOVES THROUGH.

LUTZ

WEDNESDAY...A PARTLY SUNNY AND QUIET DAY EXPECTED. TONIGHT/S FRONTAL
BOUNDARY WILL BE DRAPED ACROSS SRN LOWER MI BY 12Z WED...AS HIGH
PRESSURE NOSES SEWD ACROSS THE UPPER GREAT LAKES. RETURN FLOW INTO
UPPER MS VALLEY WILL BE STRONG ON BACK SIDE OF THIS HIGH. RETURN
FLOW WAA...COUPLED WITH UPPER TROUGH ROTATING EWD INTO THE NRN
PLAINS WILL RESULT IN SHOWERS/STORMS ACROSS UPPER MS BY LATE WED.
WHILE PRECIP WILL REMAIN W OF MICHIGAN THROUGH WED...MID/UPPER
CLOUDS WILL LIKELY TRAVERSE UPPER RIDGE AXIS INTO REGION. THIS WILL
RESULT IN A PARTLY SUNNY DAY.

WEDNESDAY NIGHT AND THURSDAY...DEEP LAYER RIDGING WILL SLIDE E OF
REGION. THIS WILL ALLOW STRONG WAA -- FUELED BY 40-50 KT 850 MB LLJ
-- TO GRADUALLY SPREAD EWD INTO THE GREAT LAKES. MODELS SUGGEST THAT
MOISTURE AT NOSE OF LLJ WILL SUPPORT SOME CONVECTION IN ERN UPPER
LATE WED NIGHT...AS NRN LOWER REMAINS PARTLY CLOUDY. BY THURSDAY...A
SERIES OF UPPER IMPULSES WILL BEGIN TO ROTATE OUT OF NRN PLAINS
TROUGH INTO THE WESTERN GREAT LAKES. WITH CONTINUED WAA AND AN
APPROACHING SURFACE TROUGH...A RISK FOR SHOWERS AND THUNDERSTORMS
WILL STEADILY OVERSPREAD REGION FROM WEST TO EAST THURSDAY AND
THURSDAY NIGHT -- BEGINNING IN NW LOWER AND E UPPER THUR AFTERNOON
AND REACHING ERN PARTS OF FORECAST AREA BY LATE THURSDAY NIGHT.

FRIDAY...WILL CONTINUE RISK FOR SHOWERS AND STORMS AREA-WIDE. MODELS
HAVE TRENDED TOWARD WEAKENING AND SPEEDING UP INITIAL COLD FRONT
EARLY FRIDAY...WITH A TENDENCY TOWARD STRENGTHENING A SECONDARY
FRONT TAKING SHAPE OVER THE UPPER MS VALLEY. UPSHOT...RISK FOR
SHOWERS/STORMS WILL CONTINUE FOR FRI AND FRIDAY NIGHT.

SATURDAY THROUGH TUESDAY...FRIDAY/S COLD FRONT WILL HAVE PUSHED E OF
FORECAST AREA BY SATURDAY...AS THE ASSOCIATED UPPER TROUGH ROTATES
NE THRU ONTARIO. HOWEVER...REGION WILL REMAIN IN A RATHER
PROGRESSIVE PATTERN...WITH WEAK/BROAD UPPER TROUGH ACROSS THE NERN
U.S. AND AN OTHERWISE ZONAL FLOW ACROSS THE NRN U.S. -- NOT ALL THAT
UNUSUAL FOR EARLY-MID JUNE. IN WAKE OF FRIDAY/S FRONT...MODELS AGREE
THAT THERMAL TROUGH AND SURFACE RIDGING SHOULD PROVIDE FOR
QUIET/PLEASANT WEATHER ON SAT. FORECAST THEN BECOMES A BIT CHAOTIC
BEYOND SAT...AS MODELS STRUGGLE WITH THE TIMING OF SUBSEQUENT SHORT
WAVES PROGGED TO PUSH EWD/ESEWD IN THE AFOREMENTIONED ZONAL FLOW. WILL
TENTATIVELY BRING NEXT CHANCE FOR SHOWERS/STORMS INTO FORECAST FOR
SUN/MON TIMEFRAME...WITH DRY WEATHER RETURNING FOR TUE. HIGHS
THROUGH THE PERIOD WILL AVERAGE CLOSE TO NORMAL...WITH 60S AND 70S
EXPECTED.

SMITH

&&

.APX WATCHES/WARNINGS/ADVISORIES...
MI...NONE.
LM...NONE.
LH...NONE.
LS...NONE.

&&

Hazardous weather outlook, Jun 10, 4:00 PM EDT, 2 hours 25 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GAYLORD MI
400 PM EDT TUE JUN 10 2008

LHZ345>349-LMZ323-341-342-344>346-LSZ321-322-MIZ008-015>036-041-042-
111100-
STRAITS OF MACKINAC-ST IGNACE TO FALSE DETOUR CHANNEL-
MACKINAC BRDG TO PRESQUE ISLE LT-PRESQUE ISLE LT TO STURGEON PT-
STURGEON PT TO ALABASTER-GRAND TRAVERSE BAY-
SEUL CHOIX PT TO MACKINAC BRDG-NORWOOD TO MACKINAC BRDG-
SLEEPING BEAR PT TO GRAND TRAVERSE LT-PT BETSIE TO SLEEPING BEAR PT-
MANISTEE TO PT BETSIE-WHITEFISH BAY-ST. MARYS RIVER-CHIPPEWA-
MACKINAC-EMMET-CHEBOYGAN-PRESQUE ISLE-CHARLEVOIX-LEELANAU-ANTRIM-
OTSEGO-MONTMORENCY-ALPENA-BENZIE-GRAND TRAVERSE-KALKASKA-CRAWFORD-
OSCODA-ALCONA-MANISTEE-WEXFORD-MISSAUKEE-ROSCOMMON-OGEMAW-IOSCO-
GLADWIN-ARENAC-
400 PM EDT TUE JUN 10 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE HURON...LAKE
MICHIGAN...LAKE SUPERIOR...EASTERN UPPER MICHIGAN AND NORTHERN LOWER
MICHIGAN.

.DAY ONE...TONIGHT

SCATTERED THUNDERSTORMS WILL CONTINUE TO IMPACT PARTS OF NORTHERN
LOWER AND EASTERN UPPER MICHIGAN THROUGH 10 PM THIS EVENING. A FEW
OF THESE STORMS MAY BE SEVERE...WITH THE MAIN THREAT BEING PENNY
SIZE HAIL.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

SCATTERED THUNDERSTORMS WILL AGAIN BE POSSIBLE WEDNESDAY NIGHT
ACROSS EASTERN UPPER MICHIGAN...AND THURSDAY AFTERNOON THROUGH
FRIDAY NIGHT ACROSS ALL OF NORTHERN MICHIGAN.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

SMITH

In the hours before

Local storm report, Jun 10, 4:09 PM EDT, 2 hours 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GAYLORD MI
409 PM EDT TUE JUN 10 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0403 PM     HAIL             HOUGHTON LAKE           44.30N 84.76W
06/10/2008  E0.75 INCH       ROSCOMMON          MI   BROADCAST MEDIA

&&

LUTZ

Local storm report, Jun 10, 4:20 PM EDT, 2 hours 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GAYLORD MI
420 PM EDT TUE JUN 10 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0415 PM     HAIL             PRUDENVILLE             44.30N 84.67W
06/10/2008  M0.75 INCH       ROSCOMMON          MI   TRAINED SPOTTER

&&

MPC

Local storm report, Jun 10, 5:18 PM EDT, 1 hour 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GAYLORD MI
518 PM EDT TUE JUN 10 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0510 PM     HAIL             3 E GLENNIE             44.57N 83.66W
06/10/2008  E0.88 INCH       ALCONA             MI   TRAINED SPOTTER

&&

MPC

The office that day

Everything else NWS Gaylord, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 10, 3:08 PM EDT	Severe Thunderstorm Warning	APX	Missaukee, Roscommon	52 min
Jun 10, 3:34 PM EDT	Severe Thunderstorm Warning	APX	Arenac, Gladwin	56 min
Jun 10, 3:59 PM EDT	Severe Thunderstorm Warning	APX	Iosco, Ogemaw, Roscommon	61 min
Jun 10, 4:53 PM EDT	Severe Thunderstorm Warning	APX	Alcona, Iosco	47 min
Jun 10, 5:26 PM EDT	Special Marine Warning	APX		35 min
Jun 10, 5:32 PM EDT	Severe Thunderstorm Warning	APX	Arenac, Iosco	43 min
Jun 10, 5:45 PM EDT	Special Marine Warning	APX		60 min
Jun 10, 7:00 PM EDT	Special Marine Warning	APX		60 min

Nearby

Special Marine Warnings in Michigan, 2008 Every special marine warning in 2008

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.