Flash Flood Warning
NWS Grand Junction CO ยท US
English
Flash Flood Warning Issued September 18 At 4:13PM MDT Until September 18 At 7:15PM MDT By NWS Grand Junction CO
- 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 7:15 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
FFWGJT The National Weather Service in Grand Junction has issued a * Flash Flood Warning for... Northwestern Mesa County in west central Colorado... * Until 715 PM MDT. * At 413 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 0.4 and 0.8 inches of rain have fallen. The expected rainfall rate is 1.5 to 3 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly.
Hazard
Life threatening flash flooding. Thunderstorms producing flash flooding.
Source
Radar indicated.
Impacts
Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Loma and Mack. This includes portions of I-70 between mile markers 8 and 15.
Instructions
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Remain alert for flooding even in locations not receiving rain. Arroyos, streams, and rivers can become raging currents in a matter of minutes, even from distant rainfall. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become life threatening in heavy rains. Campers and hikers should avoid streams or creeks. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.
Affected areas
- Mesa County, CO
Public contact
- Issuer
- NWS Grand Junction CO
- 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 7:15 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
- Mesa County, CO
Public contact
- Issuer
- NWS Grand Junction CO
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~1m10s
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M2V9B3FNSH2KVN0RFARAQWJ0
- Identifier
- urn:oid:2.49.0.1.840.0.1b740ef0df441d47852e81588812970bca26df02.001.1
- Sender
- w-nws.webmaster@noaa.gov
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS Grand Junction CO
- AWIPS ID
- CAPGJT
- NWWS sequence
- nwws_processor.7349
- 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 | FFWGJT |
| WMOidentifier | WGUS55 KGJT 182213 |
| flashFloodDetection | RADAR INDICATED |
| flashFloodDamageThreat | CONSIDERABLE |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.KGJT.FF.W.0124.260918T2213Z-260919T0115Z/ |
| eventEndingTime | 2026-09-18T19:15:00-06:00 |
| WEAHandling | Imminent Threat |
| CMAMtext | NWS: FLASH FLOOD WARNING this area til 7:15 PM MDT. Avoid flooded areas. |
| CMAMlongtext | National Weather Service: A FLASH FLOOD WARNING is in effect for this area until 7:15 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 | FFWGJT |
| WMOidentifier | WGUS55 KGJT 182213 |
| flashFloodDetection | RADAR INDICATED |
| flashFloodDamageThreat | CONSIDERABLE |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.KGJT.FF.W.0124.260918T2213Z-260919T0115Z/ |
| eventEndingTime | 2026-09-18T19:15:00-06:00 |
| WEAHandling | Imminent Threat |
| CMAMtext | SNM: AVISO DE INUNDACIONES REPENTINAS hasta 7:15 PM MDT. Evite areas inundadas. |
| CMAMlongtext | Servicio Nacional de Meteorologia: AVISO DE INUNDACIONES REPENTINAS en efecto para esta area hasta las 7:15 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
- Mesa County, CO
| Name | Value |
|---|---|
| SAME | 008077 |
| UGC | COC077 |
- Polygons
- 39.18,-108.92 39.14,-108.89 39.11,-108.83 39.21,-108.75 39.28,-108.77 39.29,-108.84 39.22,-108.91 39.18,-108.92
Spanish
Location data
- Mesa County, CO
| Name | Value |
|---|---|
| SAME | 008077 |
| UGC | COC077 |
- Polygons
- 39.18,-108.92 39.14,-108.89 39.11,-108.83 39.21,-108.75 39.28,-108.77 39.29,-108.84 39.22,-108.91 39.18,-108.92