Northern Mariana Islands Flash Flood Warning | Effective 04/13/2026 19:13

Headline: 
Flash Flood Warning issued April 14 at 12:13PM ChST until April 14 at 8:15PM ChST by NWS Tiyan GU
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
April 13, 2026 - 7:13pm
Expires: 
April 14, 2026 - 3:15am
Description: 
FFWGUM The National Weather Service in Tiyan has issued a * Flash Flood Warning for... Saipan... Tinian... * Until 815 PM ChST Tuesday. * At 1213 PM ChST, Doppler radar indicated heavy rain across the warned area. Between 1 and 4 inches of rain have fallen. The expected rainfall rate is 1 to 2 inches in 1 hour. Additional rainfall amounts of 7 to 10 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. IMPACT...Flash flooding of small creeks and streams, urban areas, and streets 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. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.
Area Description: 
Saipan, MP; Tinian, MP
Forcast Office: 
NWS Tiyan GU
Sender: 
w-nws.webmaster@noaa.gov