Flash Flood Warning
NWS Boise ID ยท US
English
Flash Flood Warning Issued September 18 At 5:47PM MDT Until September 18 At 8:15PM MDT By NWS Boise ID
- Event
- Flash Flood Warning
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Immediate
- Severity
- Severe
- Certainty
- Likely
- Response
- Avoid
Wireless alert
National Weather Service: A FLASH FLOOD WARNING is in effect for this area until 8:15 PM MDT. This is a dangerous and life-threatening situation. Do not attempt to travel unless you are fleeing an area subject to flooding or under an evacuation order.
Description
Overview
FFWBOI The National Weather Service in Boise has issued a * Flash Flood Warning for... The Wapiti Burn Area in... Northeastern Boise County in southwestern Idaho... * Until 815 PM MDT. * At 547 PM MDT, emergency management reported thunderstorms producing heavy rain over the Wapiti Burn Area. Flash flooding is ongoing or expected to begin shortly. Excessive rainfall over the burn scar will result in debris flow moving through the High Drainage Test. The debris flow can consist of rock, mud, vegetation and other loose materials.
Hazard
Life threatening flash flooding and debris flows in and around the Wapiti Fire Burn Scar.
Source
Emergency management reported debris on Idaho State Highway 21 between mileposts 103 and 105.
Impacts
Life threatening flash flooding and debris flows in and around the Wapiti Fire Burn Scar will impact Grandjean Road and Highway 21 from east of Lowman to Banner Summit. * Some locations that will experience flash flooding include... Grandjean.
Instructions
This is a life threatening situation. Heavy rainfall will cause extensive and severe flash flooding of creeks...streams...and ditches in the Wapiti Burn Area. Severe debris flows can also be anticipated across roads. Roads and driveways may be washed away in places. If you encounter flood waters...climb to safety.
Affected areas
- Boise County, ID
Public contact
- Issuer
- NWS Boise ID
- Website
- http://www.weather.gov
Spanish
- Event
- Flash Flood Warning
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Immediate
- Severity
- Severe
- Certainty
- Likely
- Response
- Avoid
Wireless alert
Servicio Nacional de Meteorologia: AVISO DE INUNDACIONES REPENTINAS en efecto para esta area hasta las 8:15 PM MDT. Esta es una situacion peligrosa y amenaza la vida. No intente viajar a menos que sea para abandonar un area propensa a inundaciones o bajo una orden de desalojo.
Affected areas
- Boise County, ID
Public contact
- Issuer
- NWS Boise ID
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~24s
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M2VENTT7289Q8BGE5QZHDEYK
- Identifier
- urn:oid:2.49.0.1.840.0.a7c731b26bc3a0e5a339b36289f9125565ebd3ea.001.1
- Sender
- w-nws.webmaster@noaa.gov
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS Boise ID
- AWIPS ID
- CAPBOI
- NWWS sequence
- nwws_processor.9767
- WMO heading
- XOUS55
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- United States (US)
- WMO bulletin number
- 55
English
Event codes
| Name | Value |
|---|---|
| SAME | FFW |
| NationalWeatherService | FFW |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | FFWBOI |
| WMOidentifier | WGUS55 KBOI 182347 |
| flashFloodDetection | OBSERVED |
| flashFloodDamageThreat | CONSIDERABLE |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.KBOI.FF.W.0013.260918T2347Z-260919T0215Z/ |
| eventEndingTime | 2026-09-18T20:15:00-06:00 |
| WEAHandling | Imminent Threat |
| CMAMtext | NWS: FLASH FLOOD WARNING this area til 8:15 PM MDT. Avoid flooded areas. |
| CMAMlongtext | National Weather Service: A FLASH FLOOD WARNING is in effect for this area until 8:15 PM MDT. This is a dangerous and life-threatening situation. Do not attempt to travel unless you are fleeing an area subject to flooding or under an evacuation order. |
Spanish
Event codes
| Name | Value |
|---|---|
| SAME | FFW |
| NationalWeatherService | FFW |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | FFWBOI |
| WMOidentifier | WGUS55 KBOI 182347 |
| flashFloodDetection | OBSERVED |
| flashFloodDamageThreat | CONSIDERABLE |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.KBOI.FF.W.0013.260918T2347Z-260919T0215Z/ |
| eventEndingTime | 2026-09-18T20:15:00-06:00 |
| WEAHandling | Imminent Threat |
| CMAMtext | SNM: AVISO DE INUNDACIONES REPENTINAS hasta 8:15 PM MDT. Evite areas inundadas. |
| CMAMlongtext | Servicio Nacional de Meteorologia: AVISO DE INUNDACIONES REPENTINAS en efecto para esta area hasta las 8:15 PM MDT. Esta es una situacion peligrosa y amenaza la vida. No intente viajar a menos que sea para abandonar un area propensa a inundaciones o bajo una orden de desalojo. |
Locations
English
Location data
- Boise County, ID
| Name | Value |
|---|---|
| SAME | 016015 |
| UGC | IDC015 |
- Polygons
- 44.25,-115.32 44.28,-115.33 44.32,-115.29 44.29,-115.24 44.31,-115.22 44.28,-115.2 44.29,-115.17 44.2,-115.17 44.19,-115.13 44.15,-115.08 44.16,-115.06 44.12,-115.07 44.11,-115.04 44.09,-115.04 44.06,-115.14 44.1,-115.17 44.09,-115.24 44.14,-115.31 44.14,-115.36 44.16,-115.37 44.25,-115.32
Spanish
Location data
- Boise County, ID
| Name | Value |
|---|---|
| SAME | 016015 |
| UGC | IDC015 |
- Polygons
- 44.25,-115.32 44.28,-115.33 44.32,-115.29 44.29,-115.24 44.31,-115.22 44.28,-115.2 44.29,-115.17 44.2,-115.17 44.19,-115.13 44.15,-115.08 44.16,-115.06 44.12,-115.07 44.11,-115.04 44.09,-115.04 44.06,-115.14 44.1,-115.17 44.09,-115.24 44.14,-115.31 44.14,-115.36 44.16,-115.37 44.25,-115.32