Alert archive / Idaho / Flash Flood Warnings in 2012
Flash Flood Warning 2, NWS Boise, ID
NWS Boise, ID issued this flash flood warning at Oct 16, 2012, 10:17 AM MDT for Boise County, Elmore County, Idaho. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Oct 16, 2012, 10:17 AM MDT (16:17 UTC)
- Expired
- Oct 16, 2012, 1:15 PM MDT
- In force
- 3 hr
- Issued by
- NWS Boise, ID
- Area
- Storm-based polygon
- Flood severity
- None
Counties Boise County, ID, Elmore County, ID
The radar
The Boise radar (KCBX), 78 km from the middle of the area, began a volume at 16:18 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 16, 10:57 AM MDT | HEAVY RAIN 1.06 | 2 N Pine, ID | 1.06 INCHES OF RAIN SINCE MIDNIGHT. STILL RAINING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Boise Airport, ID (KBOI), launched 12:00Z, 4.3 hours before the alert went out and 72 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
- 9 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 821 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 252 m²/s²
- 0-3 km storm-relative helicity
- 299 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
027 WGUS55 KBOI 161617 FFWBOI IDC015-039-161915- /O.NEW.KBOI.FF.W.0002.121016T1617Z-121016T1915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE BOISE ID 1017 AM MDT TUE OCT 16 2012 THE NATIONAL WEATHER SERVICE IN BOISE HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTH CENTRAL ELMORE COUNTY IN SOUTHWEST IDAHO... CENTRAL BOISE COUNTY IN WEST CENTRAL IDAHO... * UNTIL 115 PM MDT. * AT 1009 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE POTENTIAL FOR FLASH FLOODING FROM THUNDERSTORMS OVER THE TRINITY RIDGE FIRE BURN SCAR. * LOCATIONS IMPACTED INCLUDE...FEATHERVILLE...ROCKY BAR...JAMES CREEK SUMMIT...TRINITY LAKES...BARBER FLAT GUARD STATION AND DUTCH CREEK GUARD STATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... MUDSLIDES AND DEBRIS FLOWS ARE LIKELY WITH THIS EVENT IN AREAS OF STEEP TERRAIN BURNED BY WILDFIRES. && LAT...LON 4387 11512 4346 11522 4361 11568 4397 11558 $$ SP
2 follow-up statements
468 WGUS75 KBOI 161756 FFSBOI FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE BOISE ID 1156 AM MDT TUE OCT 16 2012 IDC015-039-161915- /O.CON.KBOI.FF.W.0002.000000T0000Z-121016T1915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BOISE ID-ELMORE ID- 1156 AM MDT TUE OCT 16 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 PM MDT FOR NORTH CENTRAL ELMORE AND CENTRAL BOISE COUNTIES... AT 1148 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT HEAVY RAIN HAD FALLEN OVER THE TRINITY RIDGE FIRE BURN SCAR. ALTHOUGH HEAVY RAIN HAS ENDED THERE...DEBRIS FLOWS CAN TAKE TIME TO DEVELOP AFTER HEAVY RAIN. THEREFORE THE WARNING WILL BE ALLOWED TO CONTINUE THROUGH 115 PM MDT. PLEASE EXERCISE CAUTION IF YOU ARE NEAR THE BURN SCAR. LOCATIONS IMPACTED INCLUDE...FEATHERVILLE...ROCKY BAR...JAMES CREEK SUMMIT...TRINITY LAKES...BARBER FLAT GUARD STATION AND DUTCH CREEK GUARD STATION. LAT...LON 4387 11512 4346 11522 4361 11568 4397 11558 $$ SP
926 WGUS75 KBOI 161912 FFSBOI FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE BOISE ID 112 PM MDT TUE OCT 16 2012 IDC015-039-161921- /O.EXP.KBOI.FF.W.0002.000000T0000Z-121016T1915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BOISE ID-ELMORE ID- 112 PM MDT TUE OCT 16 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 115 PM MDT FOR NORTH CENTRAL ELMORE AND CENTRAL BOISE COUNTIES... HEAVY RAIN HAS ENDED ACROSS THE TRINITY RIDGE FIRE BURN SCAR. SO FAR NO REPORTS OF DEBRIS FLOWS HAVE BEEN RECEIVED BY THE NATIONAL WEATHER SERVICE. THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE ON SCHEDULE AT 115 PM MDT. LAT...LON 4387 11512 4346 11522 4361 11568 4397 11558 $$ SP
The office that day
Everything else NWS Boise, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 16, 9:00 AM MDT | Flash Flood Watch | BOI | Boise, Camas, Elmore | 5 hr |
| Oct 16, 9:24 AM MDT | Flash Flood Warning | BOI | Boise, Valley | 3 hr |
| Oct 16, 10:07 AM MDT | Special Weather Statement | BOI | Ada, Canyon, Elmore | 53 min |
| Oct 16, 11:16 AM MDT | Special Weather Statement | BOI | Gooding, Jerome, Owyhee | 59 min |
| Oct 16, 11:30 AM MDT | Severe Thunderstorm Warning | BOI | Elmore, Gooding, Jerome, Twin Falls | 45 min |
| Oct 16, 12:20 PM MDT | Special Weather Statement | BOI | Jerome, Twin Falls | 55 min |
Nearby
Flash Flood Warnings in Idaho, 2012Every flash flood warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.