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NWS Guam 🇬🇺
@NWSGuam
Official Twitter account for the National Weather Service Guam. Details: weather.gov/twitter Website: weather.gov/gum
Guamweather.gov/gumJoined August 2020
222 Following
1,901 Followers

NWS Guam 🇬🇺’s Tweets

NWS Guam 🇬🇺
@NWSGuam
A tradewind surge around midweek is expected to bring increased swell and seas from the northeast which will impact north and east facing reefs for the Marianas and Micronesian Islands.
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NWS Guam 🇬🇺
@NWSGuam
7PM WED JAN 25 2023 Developing north swell and trade-wind surge will help to keep seas elevated and build surf along west, north, and east-facing reefs. Monitor our website to see what hazardous are currently in effect/expected in your area. weather.gov/gum/
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NWS Guam 🇬🇺
@NWSGuam
10PM SUN JAN 22 2023 **A BUSY MARINE PATTERN IS EXPECTED THIS WEEK** Elevated winds and seas will continue to cause concern for coastal and marine hazards over the next several days. Keep up to date on any advisories by checking our website, weather.gov/gum
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NWS Guam 🇬🇺
@NWSGuam
11:20 PM January 19, 2023 Preliminary data on earthquake felt in the Marianas: Located 30 miles NE of Hagatna Guam, Magnitude 5.0, Depth 75.1 miles
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NWS Guam 🇬🇺
@NWSGuam
11 PM January 19, 2023 We felt a earthquake here at the office, did you? We will provide some preliminary estimates of magnitude and location as we receive it.
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NWS Guam 🇬🇺
@NWSGuam
10PM WED JAN 18 2023 Drier trade winds persist for the Marianas. Meanwhile, a trade-wind surge is bringing breezy & showery conditions to E. Micronesia, soon to extend over the rest of W. Micronesia this weekend. weather.gov/gum
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NWS Guam 🇬🇺
@NWSGuam
It has been a very wet start to new year on Guam. As of 4pm ChST is the 3rd wettest on record on Guam. Here is a look at the top 5 January's on record on Guam. #Guamwx
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NWS Guam 🇬🇺
@NWSGuam
Flash Flood Warning continues for Dededo GU, Yigo GU and Tamuning GU until 5:45 PM ChST
This graphic displays a flash flood warning plotted on a map. The warning is in effect until 5:45 PM ChST. The warning includes Dededo GU, Yigo GU and Tamuning GU. Avoid walking or driving through flood waters! Move immediately to higher ground! There are people in the warning along with 32 schools and 2 hospitals.
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NWS Guam 🇬🇺
@NWSGuam
**GUAM: UPGRADED TO FLASH FLOOD WARNING UNTIL 5:45 PM** Doppler radar indicated showers and possible thunderstorms developing, mainly over central and northern Guam. Prolonged heavy rainfall is expected, amounting to 2 to 4 inches. weather.gov/gum
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NWS Guam 🇬🇺
@NWSGuam
Flash Flood Warning including Dededo GU, Yigo GU and Tamuning GU until 5:45 PM ChST
This graphic displays a flash flood warning plotted on a map. The warning is in effect until 5:45 PM ChST. The warning includes Dededo GU, Yigo GU and Tamuning GU. Avoid walking or driving through flood waters! Move immediately to higher ground! There are people in the warning along with 32 schools and 2 hospitals.
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NWS Guam 🇬🇺
@NWSGuam
PGUA - Super-Res Reflectivity 1 12:48 PM #guwx **URBAN AND SMALL STREAM FLOOD ADVISORY UNTIL 2:45 PM** Another group of showers starting to move through. Additional 2 to 4 inches for central and northern Guam.
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NWS Guam 🇬🇺
@NWSGuam
9:40AM SAT JAN 14 2023 ***GUAM: URBAN AND SMALL STREAM ADVISORY IN EFFECT UNTIL 11:30 AM*** Doppler radar and automated rain gauges indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly. weather.gov/gum
NWS Guam 🇬🇺
@NWSGuam
***Gale warning extended for Northwest Guam waters till 6am Saturday.*** ***Gale warning also in effect for the CNMI, please see previous graphic.***
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NWS Guam 🇬🇺
@NWSGuam
10 AM FRI JAN 13 2023 ***MARIANAS: UPGRADED WARNINGS AND ADVISORIES*** Overnight, latest data prompted a Gale/Hazardous Seas Warning, Wind Advisory, and High Surf Warning for Guam/Rota. Beach and marine activities are extremely discouraged. weather.gov/gum
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NWS Guam 🇬🇺
@NWSGuam
***URBAN AND SMALL STREAM FLOOD ADVISORY CONTINUES FOR TINIAN AND SAIPAN UNTIL 7PM CHST*** Emergency management has reported heavy rain in the advisory area and satellite and radar show heavy rain continues to develop around Tinian and Saipan.
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NWS Guam 🇬🇺
@NWSGuam
**URBAN AND SMALL STREAM ADVISORY HAS BEEN ISSUED** **TINIAN AND SAIPAN: January 12th, 2023 3:15pm ChST** Additional rain fall is expected to be 1 to 3 inch for this event.
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NWS Guam 🇬🇺
@NWSGuam
6:30am Thu 12 Jan 2023: Northerly swell will build across Micronesia the next few days, leading to large surf and dangerous rip currents. Elsewhere, a broad disturbance, Invest 97W, sits well west of Palau. 97W is not expected to impact Micronesia. weather.gov/gum/
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NWS Guam 🇬🇺
@NWSGuam
The threat for a waterspout has diminished at this time. Still have showers developing near Rota and Guam and it looks like they are slowly drifting south-southwest. Continue to monitor our website and social media for latest weather updates. weather.gov/gum
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NWS Guam 🇬🇺
@NWSGuam
Special Marine Warning including the Guam Coastal Waters until 6:00 PM ChST
This graphic displays a special marine warning plotted on a map. The warning is in effect until 6:00 PM ChST. The warning includes Guam coastal waters. The threats associated with this warning are wind gusts less than 34kts and no hail expected.Waterspouts are possible. Steep waves can be expected. Seek safe harbor and take protective actions.
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NWS Guam 🇬🇺
@NWSGuam
Special Marine Warning including the Guam Coastal Waters until 5:15 PM ChST
This graphic displays a special marine warning plotted on a map. The warning is in effect until 5:15 PM ChST. The warning includes Guam coastal waters. The threats associated with this warning are wind gusts less than 34kts and no hail expected.Waterspouts are possible. Steep waves can be expected. Seek safe harbor and take protective actions.
NWS Guam 🇬🇺
@NWSGuam
Special Marine Warning including the Guam Coastal Waters until 4:30 PM ChST
This graphic displays a special marine warning plotted on a map. The warning is in effect until 4:30 PM ChST. The warning includes Guam coastal waters. The threats associated with this warning are wind gusts less than 34kts and no hail expected.Waterspouts are possible. Steep waves can be expected. Seek safe harbor and take protective actions.
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NWS Guam 🇬🇺
@NWSGuam
Flash Flood Warning including Dededo GU, Yigo GU and Tamuning GU until 1:15 PM ChST
This graphic displays a flash flood warning plotted on a map. The warning is in effect until 1:15 PM ChST. The warning includes Dededo GU, Yigo GU and Tamuning GU. Avoid walking or driving through flood waters! Move immediately to higher ground! There are people in the warning along with 28 schools and 2 hospitals.
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NWS Guam 🇬🇺
@NWSGuam
7am Wed 11 Jan 2023: Large N to NE swell will lead to hazardous surf/sea conditions for all the Marianas the rest of the week. Breezy & showery weather is in store for Saipan & Tinian the next few days as a shearline meanders overhead. For the latest -> ow.ly/WVa650MnaX8
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NWS Guam 🇬🇺
@NWSGuam
Special Marine Warning including the Guam Coastal Waters until 6:45 PM ChST
This graphic displays a special marine warning plotted on a map. The warning is in effect until 6:45 PM ChST. The warning includes Guam coastal waters. The threats associated with this warning are wind gusts greater than 34kts and no hail expected.Waterspouts are possible. Steep waves can be expected. Seek safe harbor and take protective actions.
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NWS Guam 🇬🇺
@NWSGuam
**GUAM WATERS: January 9th, 2023 6:15pm ChST** **SPECIAL MARINE WARNING HAS BEEN ISSUED** This warning was issued for doppler radar indicated water spout. Located 10 nm sw of Ipan buoy. Mariners should seek safe harbor immediately. Seas near this storm are extremely choppy.
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NWS Guam 🇬🇺
@NWSGuam
Special Marine Warning including the Guam Coastal Waters until 6:15 PM ChST
This graphic displays a special marine warning plotted on a map. The warning is in effect until 6:15 PM ChST. The warning includes Guam coastal waters. The threats associated with this warning are wind gusts greater than 34kts and no hail expected.Waterspouts are possible. Steep waves can be expected. Seek safe harbor and take protective actions.
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NWS Guam 🇬🇺
@NWSGuam
Flash Flood Warning including Dededo GU and Tamuning GU until 6:00 PM ChST
This graphic displays a flash flood warning plotted on a map. The warning is in effect until 6:00 PM ChST. The warning includes Dededo GU and Tamuning GU. Avoid walking or driving through flood waters! Move immediately to higher ground! There are people in the warning along with 16 schools and 1 hospital.
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NWS Guam 🇬🇺
@NWSGuam
****FLOOD ADVISORY FOR CENTRAL AND NORTHERN GUAM TILL 6:15 ChST. ***** Heavy rain is causing minor flooding in low-lying areas and poor drainage areas in central and northern Guam. An additional 1 to 2 inches of rain is expected #guwx
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NWS Guam 🇬🇺
@NWSGuam
Flash Flood Warning including Santa Rita GU and Inarajan GU until 5:15 PM ChST
This graphic displays a flash flood warning plotted on a map. The warning is in effect until 5:15 PM ChST. The warning includes Santa Rita GU and Inarajan GU. Avoid walking or driving through flood waters! Move immediately to higher ground! There are people in the warning along with 5 schools and 0 hospitals.
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NWS Guam 🇬🇺
@NWSGuam
Check out the Local Storm Report (LSR) from measurements and observations submitted by the public. Thank you! Based on these reports, around 2 to 4 inches of rain fell throughout the day and a flooding event was verified in Merizo. ow.ly/g78Z50MkMw8
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NWS Guam 🇬🇺
@NWSGuam
***UPDATE*** **URBAN & SMALL STREAM FLOOD ADVISORY** An Urban & Small Stream Flood Advisory has been issued for Guam & Rota until 5:15pm ChSt. Rainfall totals so far have been 2 to 4 inches in Guam. Expect 1 to 3 more inches For full forecast ow.ly/BojF50MkIP8
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