# Presentation: 007172

## New Marine Weather Warning Product

**Partners Meeting**
***June 20, 2007***
*Mark Tew*
*Marine Weather Program Leader*
*Office of Climate, Water and Weather Services*

## Watch / Warning / AdvisoryHow does the rest of NWS do it?

- Winter Weather Program – (WSW)
- Winter Weather Watch
- Winter Weather Warning
- Winter Weather Advisory
- Non-Precipitation Program –(NPW)
- Non-Precipitation Watch
- Non-Precipitation Warning
- Non-Precipitation Advisory

- Hydrological Program – (FFA/FLW/FLS)
- Flood Watch
- Flood Warning
- Flood Advisory
- Coastal Hazards Program – (CFW)
- Coastal Flood Watch
- Coastal Flood Warning
- Coastal Flood Advisory

## Current Long Duration Marine Warning Program

- No Marine Weather Watch
- No Marine Weather Warning Bulletin
- Marine Hazards Headlined in CWF, NSH and GLF
- Similar to issuing Blizzard Warnings using the ZFP
- CWF and NSH contain VTEC Strings
- Forces permanent VTEC string in forecast products
- ROU – used when no hazards are in effect
- GLF has NO VTEC
- VTEC hole in our marine warning program
- Marine Weather Warnings and Advisories (18 total)
- Hurricane Force Wind Warning
- Storm Warning
- Gale Warning
- Small Craft Advisories
- Hurricane/Tropical Storm Warnings

## Small Craft Advisory in CWF

- ANZ532>534-030815-
- /O.CON.KLWX.SC.Y.0071.060603T1200Z-060604T0100Z/
- CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
- CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
- CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
- 423 PM EDT FRI JUN 2 2006
- ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM SATURDAY MORNING
- THROUGH SATURDAY EVENING...
- .TONIGHT...S WINDS 10 TO 15 KT. WAVES 2 FT. SHOWERS AND TSTMS.
- VSBY 1 TO 3 NM.
- .SAT...SW WINDS 15 TO 20 KT. WAVES 3 FT. SHOWERS LIKELY WITH A
- CHANCE OF TSTMS. VSBY 1 TO 3 NM.
- .SAT NIGHT...N WINDS 15 TO 20 KT EARLY IN THE EVENING...DECREASING
- TO 10 TO 15 KT. WAVES 3 FT.
- ...etc.

**SC.Y in**
**VTEC String**

## Proposal

- Develop New Marine Weather Warning Bulletin
- Motivation
- Consistency with other warning programs
- Improves understanding and use of NWS Warning products
- Standardizes procedures for forecasters
- Provides needed warning tool
- CWF headline practice shows the need for Watches
- ...Gale Warning Expected Tuesday...
- Vehicle to carry VTEC from CWF and NSH
- Fills VTEC Hole in the Open Waters of the Great Lakes
- Value to Users and Partners
- Allows for more detailed warning information
- Easier to obtain using automated means

## Motivation – Value to customers

- The new Marine Weather Warning will allow forecasters to paint a picture of the synoptic situation and link it to the resulting hazardous wind or seas situation
- Current approach does not connect the “why” with the “what”

## Marine Wind  Watch – MWWOverview:

-     ...GALE WINDS EXPECTED FROM PT ST GEORGE TO CAPE MENDOCINO FROM 20 NM TO 60 NM ON FRIDAY...
-     .STRONG LOW PRESSURE OVER THE GULF OF ALASKA WILL MOVE INTO THE NORTHERN CALIFORNIA COASTAL WATERS BY THURSDAY.  WINDS WILL INCREASE WITH THE APPROACH OF THE STORM AND REACH THE HIGHEST SPEEDS ON FRIDAY.  THE WINDS ARE EXPECTED TO SHIFT TO THE WEST AND DIMINISH BY FRIDAY EVENING.

## Marine Wind Watch – MWW Segment:

-    PZZ470-081700-
-    /O.NEW.KEKA.GL.A.0001.081010T0100Z-081010T0100Z/
-    PT ST GEORGE TO CAPE MENDOCINO 20 TO 60 NM-
-    11 AM PDT WED OCT 8 2008
-     ...GALE WATCH IN EFFECT THURSDAY NIGHT THOUGH FRIDAY...
-     SOUTH WINDS 30 TO 40 KT WITH ISOLATED GUSTS TO 50 MPH ARE POSSIBLE THURSDAY NIGHT AND FRIDAY MORNING AHEAD OF THE FRONT.  THE WINDS WILL TO SHIFT TO THE WEST AND DIMINISH TO NEAR 20 MPH BY FRIDAY EVENING BEHIND THE FRONT.
-     $$

**New GL.A in MWW VTEC String**

## Hazardous Seas Warning - MWW

-     PZZ470-091700-
-     /O.NEW.KEKA.SE.W.0001.081009T1300Z-081009T1200Z/
-     PT ST GEORGE TO CAPE MENDOCINO 20 TO 60 NM-
-     4 PM PDT WED OCT 8 2008
-      ...HAZARDOUS SEAS WARNING IN EFFECT THURSDAY THROUGH THURSDAY NIGHT...
-      LARGE NORTHWEST SWELL RESULTING FROM A LOW PRESSURE SYSTEM IN THE GULF OF ALASKA WILL APPROACH THE NORTHERN CALIFORNIA WATERS TONIGHT...WITH SEAS RISING TO 25 FEET BY THURSDAY MORNING WITH PERIODS 18 TO 20 SECONDS.  AT THE SAME TIME...SOUTH WINDS WILL INCREASE TO 30 KNOTS TONIGHT...CREATING A HAZARDOUS COMBINATION OF INCREASING SOUTHERLY WIND WAVES AND LARGE NORTHWEST SWELL THROUGH THURSDAY NIGHT.
-      BY FRIDAY MORNING WINDS WILL DIMINISH TO NEAR 20 KNOTS...AND SWELLS WILL DIMINISH TO BELOW 10 FEET.

**SE.W in MWW VTEC String**

## Partner Acceptance

- MWW Proposal endorsed by National Partners
- Presented at Partners Meeting in June 2006
- Prefer VTEC in one hazard product like WSW & NPW
- Problems decoding VTEC in two forecast products
- Both contain “ROU” codes
- MWW Supported by Great Lakes Users – Feb 07
- Lake Carriers Association & International Ship Masters
- Formally approved the MWW proposal
- USCG Ninth District
- MWW would improve the dispatching of ships for search and rescue operations
- Provide more meteorology (the why) for staff briefings

## Requirements Development

- Chartered MWW Improvement Team
- Developed Requirements and Project Plan
- MWW Formatter
- Developed by SOO at WFO Detroit
- Prototype transfer of field development to AWIPS baseline
- Expedite product implementation
- Establish MWW Test Sites
- Six WFOs will experimentally test the MWW on Aug 1, 2007
- Issue experimental MWW with “E” VTEC
- Continue operational VTEC in CWF and NSH
- Evaluation of MWW Products
- Provide demonstration results and customer feedback
- Target – AWIPS OB8.3 for Implementation in Fall 2008

## MWW WFO Test Sites

- DTX – Detroit/Pontiac, CR
- BUF – Buffalo, ER
- CAR – Caribou, ER
- HFO – Honolulu, PR
- TAE – Tampa Bay, SR
- MFR – Medford, WR

## MWW Key Milestones

| Date | Action | Status |
| --- | --- | --- |
| Jun 2006 | MWW proposal accepted – WFO Eureka and WRH | Complete |
| Jun 2006 | MWW endorsed at Partners Meeting | Complete |
| Nov 2006 | MWW team chartered – 1 to 2 members from each region | Complete |
| Feb 2006 | MWW approved by Great Lakes Marine Users (LCA, USCG, ISMA) | Complete |
| Apr 2007 | Develop MWW OSIP requirements – Approved through Gate 2 | Complete |
| Jun 2007 | Develop MWW formatter – SOO WFO DTX | Complete |
| Jun 2007 | Present MWW Status at NWS Partners Meeting | In Progress |
| Jun 2007 | Test MWW formatter at NWSH AWIPs Workstation – Field forecasters | In Progress |
| Jul 2007 | Draft new MWW Directive: NWSI 10-315 | In Progress |
| Jul 2007 | Develop MWW Product Description Document | In Progress |
| Jul 2007 | Issue PNS to announce experimental test of MWW | In Progress |
| Aug - Sep 2007 | Begin OT&E of experimental MWW at six WFOs | Low Risk |
| Sep 2007 | Evaluate MWW Test Results – Verify 95%(+ 5%) error free products | Low Risk |
| Nov 2007 | MWW formatter transferred into AWIPS OB8.3 baseline delivery | Med Risk |
| May 2008 | Issue National MWW SCN for all marine WFOs except AR   | Low Risk |
| Fall 2008 | MWW operational implementation – Exception AR, later timeline  | Med Risk |

## Partner Feedback

- Any Questions or Comments?
- NWS marine home page:
- _[http://](http://www.weather.gov/marine)__[www.weather.gov](http://www.weather.gov/marine)__[/marine](http://www.weather.gov/marine)_