000

WTCA82 TJSJ 090003

TCVSJU

URGENT - IMMEDIATE BROADCAST REQUESTED

Jose Local Watch/Warning Statement/Intermediate Advisory Number 14A

National Weather Service San Juan PR AL122017

803 PM AST Fri Sep 8 2017

VIZ001-090815-

/O.CON.TJSJ.TR.A.1012.000000T0000Z-000000T0000Z/

St.Thomas...St. John...and Adjacent Islands-

803 PM AST Fri Sep 8 2017

...TROPICAL STORM WATCH REMAINS IN EFFECT...

* LOCATIONS AFFECTED

- St Thomas St John and adjacent islands

* WIND

- LATEST LOCAL FORECAST: Below tropical storm force wind

- Peak Wind Forecast: 30-40 mph with gusts to 50 mph.

- CURRENT THREAT TO LIFE AND PROPERTY: Moderate

- The wind threat has remained nearly steady from the previous assessment.

- Emergency plans should include a reasonable threat for strong tropical storm force wind.

- To be safe, earnestly prepare for the potential of significant wind impacts. Remaining efforts to secure properties should now be brought to completion.

- Dangerous wind is possible. Failure to adequately shelter may result in injury. Move to safe shelter before the wind becomes hazardous.

- POTENTIAL IMPACTS: Significant

- Some damage to roofing and siding materials, along with damage to porches, awnings, carports, and sheds. A few buildings experiencing window, door, and garage door failures. Mobile homes damaged, especially if unanchored. Unsecured lightweight objects become dangerous projectiles.

- Several large trees snapped or uprooted, but with greater numbers in places where trees are shallow rooted. Several fences and roadway signs blown over.

- Some roads impassable from large debris, and more within urban or heavily wooded places. A few bridges, causeways, and access routes impassable.

- Scattered power and communications outages, but more prevalent in areas with above ground lines.

* STORM SURGE

- No storm surge inundation forecast

- CURRENT THREAT TO LIFE AND PROPERTY: None

- The storm surge threat has remained nearly steady from the previous assessment.

- Emergency planning for this event need not include a threat for storm surge flooding. The ground will remain largely unflooded from surge water or only have spots minimally affected by surge water encroachment. Surf conditions may still be rough with some beach erosion. Stronger than normal rip currents may also be present.

- Little to no preparations needed to guard against storm surge flooding at this time.

- Ensure readiness for the next storm surge event.

- POTENTIAL IMPACTS: Little to None

- Little to no potential impacts from storm surge flooding.

* FLOODING RAIN

- LATEST LOCAL FORECAST:

- Peak Rainfall Amounts: Additional 2-4 inches, with locally higher amounts

- CURRENT THREAT TO LIFE AND PROPERTY: Moderate

- The flooding rain threat has remained nearly steady from the previous assessment.

- Emergency plans should include a reasonable threat for moderate flooding where peak rainfall totals notably exceed amounts conducive for flash flooding and rapid inundation. Rescues and emergency evacuations are possible.

- To be safe, earnestly prepare for the potential of significant flooding rain impacts.

- Dangerous flooding is possible. Failure to take action may result in serious injury or loss of life. If flood related watches and warnings are issued, heed recommended actions.

- POTENTIAL IMPACTS: Significant

- Moderate rainfall flooding may prompt several evacuations and rescues.

- Rivers and tributaries may quickly become swollen with swifter currents and overspill their banks in a few places, especially in usually vulnerable spots. Small streams, creeks, canals, arroyos, and ditches overflow.

- Flood waters can enter some structures or weaken foundations. Several places may experience expanded areas of rapid inundation at underpasses, low-lying spots, and poor drainage areas. Some streets and parking lots take on moving water as storm drains and retention ponds overflow. Driving conditions become hazardous. Some road and bridge closures.

* TORNADO

- LATEST LOCAL FORECAST:

- Situation is somewhat favorable for tornadoes

- CURRENT THREAT TO LIFE AND PROPERTY: Elevated

- The tornado threat has remained nearly steady from the previous assessment.

- When implementing emergency plans, include a reasonable threat for isolated tornadoes.

- To be safe, prepare for the potential of limited tornado impacts.

- Listen for tornado watches and warnings. Be ready to shelter quickly if a tornado approaches.

- POTENTIAL IMPACTS: Limited

- The occurrence of isolated tornadoes can hinder the execution of emergency plans during tropical events.

- A few places may experience tornado damage, along with power and communications disruptions.

- Locations could realize roofs peeled off buildings, chimneys toppled, mobile homes pushed off foundations or overturned, large tree tops and branches snapped off, shallow-rooted trees knocked over, moving vehicles blown off roads, and small boats pulled from moorings.

* FOR MORE INFORMATION:

- HTTP://WWW.SRH.NOAA.GOV/SJU/

Click here to read more at The National Hurricane Center