Northern Mariana Islands Severe Flash Flood Warning | Effective 07/05/2026 08:20

Headline: 
Flash Flood Warning issued July 6 at 1:20AM ChST until July 6 at 2:30AM ChST by NWS Tiyan GU
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
July 5, 2026 - 8:20am
Expires: 
July 5, 2026 - 9:30am
Description: 
FFWGUM The National Weather Service in Tiyan has extended the * Flash Flood Warning for... Saipan... Tinian... * Until 230 AM ChST. * At 120 AM ChST, Doppler radar indicated heavy rain across the warned area. Between 3 and 4 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by heavy rain. 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... Garapan, Dandan, China Town, Tanapag, As Mahetog, Koblerville, San Jose (Tinian Municipality), Chalan Kanoa I, San Antonio, Chalan Kanoa II, Chalan Kanoa III, San Roque, Kagman, Chalan Kanoa IV, Kagman III, Gualo Rai, Afetnas, Chalan Piao, Fananganan and Chalan Laulau.
Instruction: 
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. Be aware of your surroundings and do not drive on flooded roads.
Area Description: 
Saipan, MP; Tinian, MP
Forcast Office: 
NWS Tiyan GU