Weather alerts in Guam

EWWGUM The National Weather Service in Tiyan Guam has issued a * Extreme Wind Warning for... Southern Guam in Guam... * Until 530 AM ChST. * At 326 AM ChST, Andersen AFB Doppler radar indicated extreme winds, associated with the northern eyewall of Typhoon Champi, were moving onshore from Talofofo southward, moving west at 15 mph. THIS IS AN EXTREMELY DANGEROUS AND LIFE-THREATENING SITUATION! * Locations impacted include... Talofofo, Inarajan, Merizo, Santa Rita, and Umatac.

What to do: Destructive winds of 115 to 135 mph will spread across far southern Guam, producing swaths of significant to catastrophic damage, particularly to non-concrete structures. TAKE COVER NOW! The safest place to be during a major typhoon passage is in a reinforced interior room away from windows. If you are not in a fully-concrete structure, get under a table or other piece of sturdy furniture. Use mattresses, blankets or pillows to cover your head and body. Remain in place through the passage of these life-threatening conditions.

Updated for compact wind radii, reducing winds for Rota and Guam. ...TYPHOON CHAMPI NOW A DANGEROUS CATEGORY 4 MOVING WEST INTO GUAM COASTAL WATERS... .NEW INFORMATION... None. .AREAS AFFECTED... This local statement provides information and recommended actions for people on Guam and on Rota, Tinian and Saipan in the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. A Tropical Storm Warning and a Typhoon Watch continues for Tinian and Saipan. A Flood Watch is in effect for Rota, Tinian and Saipan in the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. A Flash Flood Warning is now in effect for Guam. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 4 AM ChST...the center of Typhoon Champi (29W) was located near latitude 13.1N...longitude 144.9E. This was about 25 miles southeast of Guam. Storm motion was west, 280 degrees, at 15 mph. Storm intensity was 140 mph. This general forecast track will take Champi about 15 miles south of Guam as a Category 4 typhoon as it intensifies further the next few days west of the Marianas. .SITUATION OVERVIEW... Typhoon Champi (29W) has been undergoing rapid intensification today. As a result it is now a dangerous category 4 typhoon. It is expected to pass a little south of Guam as a super typhoon within the next 12 hours. This may potentially bring devastating wind conditions to much of Guam during passage. .PRECAUTIONARY/PREPAREDNESS ACTIONS...

What to do: Dangerous typhoon conditions will soon occur for central and southern Guam. Everyone should be quickly moving to safety within their home or shelter. Once inside, ensure all windows and doors are secured before dangerous winds arrive. Move to an interior room on the lowest floor. Be aware that the loss of commercial power can happen quickly. Keep emergency gear handy.

FFWGUM The National Weather Service in Tiyan has extended the * Flash Flood Warning for... Guam... * Until 530 AM ChST. * At 323 AM ChST, Doppler radar indicated thunderstorms producing heavy rain across the warned area with the inner eyewall of Champi approaching southern Guam. Between 2 and 4 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly and will last through Sunday morning. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Dededo, Tamuning, Yigo, Mangilao, Chalan Pago-Ordot, Barrigada, Yona, Hagatna Heights, Andersen AFB, Talofofo, Mongmong-Toto-Maite, Sinajana, Inarajan, Asan, Merizo, Piti, Santa Rita and Umatac.

What to do: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding.

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Guam, Rota. * WHEN...Through this afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. Extensive street flooding and flooding of creeks and rivers are possible. * ADDITIONAL DETAILS... - Typhoon Champi (29W) will produce locally heavy rainfall late tonight and Sunday, though expected rainfall has decreased slightly as the larger rainbands remain mainly south and east of the center of Champi. Rota could receive 3 to 5 inches, and Guam might get 4 to 8 inches. - http://www.weather.gov/safety/flood

What to do: You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

* WHAT...For the Coastal Flood Warning, significant coastal flooding expected. For the High Surf Warning, dangerously large breaking waves up to 35 feet for Guam, 20 to 25 feet for Rota, and 15 to 20 feet for Tinian and Saipan. * WHERE...Guam, Rota, Tinian and Saipan. * WHEN...From 5 PM this afternoon to 4 AM ChST Monday. * IMPACTS...Numerous roads may be closed. Low-lying property including homes, businesses, and some critical infrastructure will be inundated. Shoreline erosion will occur. Breaking waves can sweep people off their feet, and into dangerous seas. Life- threatening swimming conditions and significant beach erosion can be expected. Coastal inundation of 5 to 7 feet for Guam, 2 to 4 feet for Rota and 1 to 3 feet for Tinian and Saipan is possible along with coastal flooding and beach erosion. * ADDITIONAL DETAILS...Surf is expected to rise rapidly to dangerous levels tonight. Coastal impacts to the western coasts of Guam and Rota are highly dependent on the final track of Champi; passage south of Guam would be reduced impacts whereas passage over Guam would result in larger coastal inundation.

What to do: Everyone should remain out of the water due to life-threatening surf conditions. Stay well away from the coast.