Alert archive / Idaho / Flash Flood Watches in 2009

Flash Flood Watch 9, NWS Missoula, MT

August 30, 2009Idaho County, Lemhi County, Idaho

NWS Missoula, MT issued this flash flood watch at Aug 30, 2009, 1:45 AM PDT for Idaho County, Lemhi County, Idaho. It took effect at Aug 30, 2009, 5:00 AM PDT. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued: Aug 30, 2009, 1:45 AM PDT (08:45 UTC)
In effect from: Aug 30, 2009, 5:00 AM PDT
Expired: Aug 30, 2009, 11:00 PM PDT
In force: 18 hr
Issued by: NWS Missoula, MT
Flood severity: None

Counties Idaho County, ID, Lemhi County, ID

The radar

The Missoula radar (KMSX), 191 km from the middle of the area, began a volume at 08:45 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Missoula, MT wrote its last area forecast discussion before this flash flood watch went out at Aug 29, 9:00 PM PDT, 4 hours 45 minutes earlier.

Area forecast discussion, Aug 29, 9:00 PM PDT, 4 hours 45 minutes before

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The office that day

Everything else NWS Missoula, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 30, 12:05 AM PDT	Areal Flood Advisory	MSO	Lemhi	4 hr

Nearby

Flash Flood Watches in Idaho, 2009 Every flash flood watch in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.