Alert archive / Idaho / Flash Flood Watches in 2011

Flash Flood Watch 4, NWS Boise, ID

July 31, 20116 counties in Idaho

NWS Boise, ID issued this flash flood watch at Jul 31, 2011, 2:30 PM MDT for 6 counties in Idaho. It took effect at Jul 31, 2011, 3:00 PM MDT. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued: Jul 31, 2011, 2:30 PM MDT (20:30 UTC)
In effect from: Jul 31, 2011, 3:00 PM MDT
Expired: Aug 1, 2011, 3:45 AM MDT
In force: 13 hr
Issued by: NWS Boise, ID

Counties Boise County, ID, Camas County, ID, Elmore County, ID, Gooding County, ID, Jerome County, ID, Twin Falls County, ID

The radar

The Boise radar (KCBX), 111 km from the middle of the area, began a volume at 20:29 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 Boise, ID wrote its last area forecast discussion before this flash flood watch went out at Jul 31, 9:52 AM MDT, 4 hours 38 minutes earlier.

Area forecast discussion, Jul 31, 9:52 AM MDT, 4 hours 38 minutes before

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Hazardous weather outlook, Jul 31, 8:16 AM MDT, 6 hours 14 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE BOISE ID
816 AM MDT SUN JUL 31 2011

IDZ011-012-014-033-ORZ061-062-064-011215-
WEST CENTRAL MOUNTAINS-LOWER TREASURE VALLEY ID-
UPPER TREASURE VALLEY-UPPER WEISER RIVER-HARNEY COUNTY-
BAKER COUNTY-LOWER TREASURE VALLEY OR-
816 AM MDT SUN JUL 31 2011 /716 AM PDT SUN JUL 31 2011/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST
IDAHO...WEST CENTRAL IDAHO...NORTHEAST OREGON AND SOUTHEAST
OREGON.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

IDZ013-015-016-028>030-ORZ063-011215-
BOISE MOUNTAINS-SOUTHWEST HIGHLANDS-WESTERN MAGIC VALLEY-
CAMAS PRAIRIE-OWYHEE MOUNTAINS-SOUTHERN TWIN FALLS COUNTY-
MALHEUR COUNTY-
816 AM MDT SUN JUL 31 2011 /716 AM PDT SUN JUL 31 2011/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
IDAHO...SOUTHWEST IDAHO...WEST CENTRAL IDAHO AND SOUTHEAST
OREGON.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS WITH LOCAL HEAVY RAIN THIS AFTERNOON
AND/OR TONIGHT. FLASH FLOOD WATCH IN EFFECT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ASKED TO REPORT ANY SIGNIFICANT WEATHER THROUGH ESTABLISHED
PROCEDURES.

The office that day

Everything else NWS Boise, ID issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 30, 7:24 PM MDT	Special Weather Statement	BOI	Ada	21 min
Jul 31, 3:42 AM MDT	Flash Flood Watch	BOI	Adams, Boise, Camas, Elmore, Gem, Gooding and 5 more	24 hr
Jul 31, 5:03 PM MDT	Red Flag Warning	BOI		11 hr

Nearby

Flash Flood Watches in Idaho, 2011 Every flash flood watch in 2011

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.