Alert archive / Idaho / Flash Flood Warnings in 2009
Flash Flood Warning 7, NWS Boise, ID
NWS Boise, ID issued this flash flood warning at Jun 14, 2009, 4:30 PM MDT for Ada County, Canyon County, Owyhee County, Idaho. It was in force for 90 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 14, 2009, 4:30 PM MDT (22:30 UTC)
- Expired
- Jun 14, 2009, 6:00 PM MDT
- In force
- 90 min
- Issued by
- NWS Boise, ID
- Area
- Storm-based polygon
- Flood severity
- None
Counties Ada County, ID, Canyon County, ID, Owyhee County, ID
The radar
The Boise radar (KCBX), 32 km from the middle of the area, began a volume at 22:30 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.
The nearest sounding before it
Boise Airport, ID (KBOI), launched 12:00Z, 10.5 hours before the alert went out and 41 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 194 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 702 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood warning 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 warning went out at Jun 14, 3:05 PM MDT, 1 hour 25 minutes earlier.
Area forecast discussion, Jun 14, 3:05 PM MDT, 1 hour 25 minutes before
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</html>Hazardous weather outlook, Jun 14, 5:16 AM MDT, 11 hours 14 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BOISE ID 516 AM MDT SUN JUN 14 2009 IDZ011>016-028>030-ORZ061>064-151215- WEST CENTRAL MOUNTAINS-LOWER TREASURE VALLEY ID-BOISE MOUNTAINS- UPPER TREASURE VALLEY-SOUTHWEST HIGHLANDS-WESTERN MAGIC VALLEY- CAMAS PRAIRIE-OWYHEE MOUNTAINS-SOUTHERN TWIN FALLS COUNTY- HARNEY COUNTY-BAKER COUNTY-MALHEUR COUNTY- LOWER TREASURE VALLEY OR- 516 AM MDT SUN JUN 14 2009 /416 AM PDT SUN JUN 14 2009/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL IDAHO...SOUTHWEST IDAHO...WEST CENTRAL IDAHO...NORTHEAST OREGON AND SOUTHEAST OREGON. .DAY ONE...TODAY AND TONIGHT A FLASH FLOOD WATCH IS IN EFFECT FROM NOON MDT TO MIDNIGHT MDT TODAY. HEAVY RAIN FROM SLOW MOVING THUNDERSTORMS WILL BE THE MAIN THREAT. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER CALLS WITH PRECIPITATION AMOUNTS WILL BE VERY HELPFUL AND ARE APPRECIATED. OF COURSE...ANY OTHER SIGNIFICANT WEATHER REPORTS ARE ALWAYS WELCOMED.
In the hours before
Local storm report, Jun 14, 3:23 PM MDT, 1 hour 7 minutes before
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</html>The office that day
Everything else NWS Boise, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 6:03 PM MDT | Areal Flood Advisory | BOI | Ada, Canyon, Owyhee | 109 min |
| Jun 14, 3:56 AM MDT | Flash Flood Watch | BOI | Ada, Adams, Boise, Camas, Canyon, Elmore and 8 more | 20 hr |
| Jun 14, 9:04 AM MDT | Flash Flood Warning | BOI | Boise, Elmore, Gem, Valley, Washington | 3 hr |
| Jun 14, 2:28 PM MDT | Flash Flood Warning | BOI | Camas, Elmore, Gooding | 92 min |
| Jun 14, 3:22 PM MDT | Flash Flood Warning | BOI | Ada, Elmore | 83 min |
| Jun 14, 5:48 PM MDT | Areal Flood Advisory | BOI | Ada, Canyon | 64 min |
Nearby
Flash Flood Warnings in Idaho, 2009Every flash flood warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.