Alert archive / Idaho / Flash Flood Warnings in 2009
Flash Flood Warning 21, NWS Pocatello, ID
NWS Pocatello, ID issued this flash flood warning at Jun 17, 2009, 1:29 PM MDT for Butte County, Custer County, Idaho. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 17, 2009, 1:29 PM MDT (19:29 UTC)
- Expired
- Jun 17, 2009, 5:30 PM MDT
- In force
- 4 hr
- Issued by
- NWS Pocatello, ID
- Area
- Storm-based polygon
- Flood severity
- None
Counties Butte County, ID, Custer County, ID
The radar
The Pocatello radar (KSFX), 96 km from the middle of the area, began a volume at 19:32 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, 7.5 hours before the alert went out and 218 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
- 80 J/kg
- Mixed-layer CIN
- -94 J/kg
- Mixed-layer LCL
- 1112 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KPIH 171929 FFWPIH IDC023-037-172330- /O.NEW.KPIH.FF.W.0021.090617T1929Z-090617T2330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE POCATELLO 129 PM MDT WED JUN 17 2009 THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHEASTERN CUSTER COUNTY IN CENTRAL IDAHO... WEST CENTRAL BUTTE COUNTY IN EAST CENTRAL IDAHO... * UNTIL 530 PM MDT * AT 125 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN AND FLASH FLOODING FROM THUNDERSTORMS OVER THE WARNED AREA. RAINFALL RATES AROUND ONE INCH IN LESS THAN ONE HOUR ARE LIKELY. * LOCATIONS THAT COULD BE AFFECTED INCLUDE... LOST RIVER... DARLINGTON... GROUSE... MOORE... PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING. TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN POCATELLO. && LAT...LON 4375 11319 4348 11361 4380 11392 4392 11358 $$ JKEYES
1 follow-up statement
000 WGUS75 KPIH 172323 FFSPIH FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE POCATELLO 523 PM MDT WED JUN 17 2009 IDC023-037-172331- /O.EXP.KPIH.FF.W.0021.000000T0000Z-090617T2330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CUSTER ID-BUTTE ID- 523 PM MDT WED JUN 17 2009 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 530 PM MDT FOR WEST CENTRAL BUTTE AND SOUTHEASTERN CUSTER COUNTIES... SHOWERS AND THUNDERSTORMS HAVE MOSTLY ENDED ACROSS THE AREA. A FEW SHOWERS AND THUNDERSTORMS ARE POSSIBLE UNTIL SUNSET. HOWEVER...THE THREAT OF HEAVY RAIN HAS ENDED. THERE MAY STILL BE SOME RUNOFF...SO BE CAREFUL IF YOU ENCOUNTER FLOODED ROADS OR STANDING WATER. PLEASE REPORT ANY FLOODING TO LOCAL LAW ENFORCEMENT OR THE NATIONAL WEATHER SERVICE. LAT...LON 4375 11319 4348 11361 4380 11392 4392 11358 $$ JKEYES
The office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 7:49 AM MDT | Flash Flood Watch | PIH | 21 hr | |
| Jun 17, 11:00 AM MDT | Flash Flood Warning | PIH | Blaine | 5 hr |
| Jun 17, 11:07 AM MDT | Flash Flood Warning | PIH | Oneida, Power | 7 hr |
| Jun 17, 12:11 PM MDT | Special Weather Statement | PIH | Blaine | 49 min |
| Jun 17, 12:43 PM MDT | Flash Flood Warning | PIH | Bannock, Franklin | 4 hr |
| Jun 17, 1:06 PM MDT | Special Weather Statement | PIH | Jefferson | 24 min |
| Jun 17, 1:19 PM MDT | Special Weather Statement | PIH | Blaine, Custer | 56 min |
| Jun 17, 1:31 PM MDT | Flash Flood Warning | PIH | Cassia | 3 hr |
| Jun 17, 2:18 PM MDT | Flash Flood Warning | PIH | Cassia | 3 hr |
| Jun 17, 2:23 PM MDT | Special Weather Statement | PIH | Butte, Clark, Jefferson | 52 min |
| Jun 17, 2:39 PM MDT | Severe Thunderstorm Warning | PIH | Bingham, Butte, Jefferson | 36 min |
| Jun 17, 3:07 PM MDT | Special Weather Statement | PIH | Bingham | 38 min |
| Jun 17, 3:26 PM MDT | Special Weather Statement | PIH | Jefferson | 64 min |
| Jun 17, 3:48 PM MDT | Special Weather Statement | PIH | Jefferson | 42 min |
| Jun 17, 3:54 PM MDT | Special Weather Statement | PIH | Power | 66 min |
| Jun 17, 3:56 PM MDT | Special Weather Statement | PIH | Butte | 34 min |
| Jun 17, 4:36 PM MDT | Special Weather Statement | PIH | Fremont, Madison | 39 min |
| Jun 17, 4:57 PM MDT | Areal Flood Advisory | PIH | Bannock, Bingham, Power | 5 hr |
| Jun 17, 5:08 PM MDT | Areal Flood Advisory | PIH | Fremont | 3 hr |
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.