Alert archive / California / Flood Watches in 2017
Flood Watch 4, NWS Eureka, CA
NWS Eureka, CA issued this flood watch at Feb 7, 2017, 2:09 PM PST for 4 counties in California. It took effect at Feb 9, 2017, 4:00 AM PST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Feb 7, 2017, 2:09 PM PST (22:09 UTC)
- In effect from
- Feb 9, 2017, 4:00 AM PST
- Expired
- Feb 9, 2017, 4:00 PM PST
- In force
- 12 hr
- Issued by
- NWS Eureka, CA
- Flood severity
- None
Counties Del Norte County, CA, Humboldt County, CA, Mendocino County, CA, Trinity County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 60 km from the middle of the area, began a volume at 22:12 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
Medford/Jackson, OR (KMFR), launched 12:00Z, 10.2 hours before the alert went out and 204 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 513 m above ground
- 0-6 km bulk shear
- 86 kt
- 0-1 km storm-relative helicity
- 387 m²/s²
- 0-3 km storm-relative helicity
- 688 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
641 WGUS66 KEKA 072209 FFAEKA URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Eureka CA 209 PM PST Tue Feb 7 2017 ...ANOTHER POTENT WINTER STORM WILL DELIVER MODERATE TO HEAVY RAIN TO THE ENTIRE REGION WEDNESDAY NIGHT THROUGH EARLY THURSDAY AFTERNOON... CAZ101>113-081200- /O.NEW.KEKA.FA.A.0004.170209T1200Z-170210T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Coastal Del Norte-Del Norte Interior-Northern Humboldt Coast- Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior-Northern Trinity-Southern Trinity- Mendocino Coast-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southwestern Mendocino Interior- Southeastern Mendocino Interior- 209 PM PST Tue Feb 7 2017 ...GENERAL FLOOD WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY AFTERNOON... The National Weather Service in Eureka has issued a * Flood Watch for a portion of northwest California, including the following areas, Coastal Del Norte, Del Norte Interior, Mendocino Coast, Northeastern Mendocino Interior, Northern Humboldt Coast, Northern Humboldt Interior, Northern Trinity, Northwestern Mendocino Interior, Southeastern Mendocino Interior, Southern Humboldt Interior, Southern Trinity, Southwestern Humboldt, and Southwestern Mendocino Interior. * WIDESPREAD RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE EXPECTED BETWEEN WEDNESDAY AND THURSDAY WITH LOCALLY HIGHER AMOUNTS OF 5 TO 7 INCHES POSSIBLE ACROSS RAIN PRONE OVER HIGHER TERRAIN. * POTENTIAL FLOODING late Wednesday night through Thursday afternoon. * THE PRIMARY IMPACTS WILL BE LOCALIZED PONDING OF WATER ON LOW LYING ROADWAYS WITH POOR DRAINAGE...RISES OF ALL AREA SMALL STREAMS...RIVER FLOODING...AND POTENTIALLY ROCK AND MUD SLIDES ON MOUNTAIN ROADS. NEAR COAST FLOODING WILL BE ACCENTUATED BY HIGH TIDES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ TONKIN
3 follow-up statements
076 WGUS66 KEKA 082315 FFAEKA Flood Watch National Weather Service Eureka CA 315 PM PST Wed Feb 8 2017 ...ANOTHER POTENT WINTER STORM WILL DELIVER MODERATE TO HEAVY RAIN TO THE ENTIRE REGION WEDNESDAY NIGHT THROUGH EARLY THURSDAY AFTERNOON... CAZ101>113-100000- /O.CON.KEKA.FA.A.0004.170209T1200Z-170210T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Coastal Del Norte-Del Norte Interior-Northern Humboldt Coast- Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior-Northern Trinity-Southern Trinity- Mendocino Coast-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southwestern Mendocino Interior- Southeastern Mendocino Interior- 315 PM PST Wed Feb 8 2017 ...FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY AFTERNOON... The Flood Watch continues for * A portion of northwest California, including the following areas, Coastal Del Norte, Del Norte Interior, Mendocino Coast, Northeastern Mendocino Interior, Northern Humboldt Coast, Northern Humboldt Interior, Northern Trinity, Northwestern Mendocino Interior, Southeastern Mendocino Interior, Southern Humboldt Interior, Southern Trinity, Southwestern Humboldt, and Southwestern Mendocino Interior. * From late tonight through Thursday afternoon * POTENTIAL FLOODING late Wednesday night through Thursday afternoon. * THE PRIMARY IMPACTS WILL BE LOCALIZED PONDING OF WATER ON LOW LYING ROADWAYS WITH POOR DRAINAGE...RISES OF ALL AREA SMALL STREAMS...RIVER FLOODING...AND POTENTIALLY ROCK AND MUD SLIDES ON MOUNTAIN ROADS. NEAR COAST FLOODING WILL BE ACCENTUATED BY HIGH TIDES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$
932 WGUS66 KEKA 091633 FFAEKA Flood Watch National Weather Service Eureka CA 833 AM PST Thu Feb 9 2017 ...ANOTHER POTENT WINTER STORM WILL DELIVER MODERATE TO HEAVY RAIN TO THE ENTIRE REGION WEDNESDAY NIGHT THROUGH EARLY THURSDAY AFTERNOON... CAZ101>113-100000- /O.CON.KEKA.FA.A.0004.000000T0000Z-170210T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Coastal Del Norte-Del Norte Interior-Northern Humboldt Coast- Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior-Northern Trinity-Southern Trinity- Mendocino Coast-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southwestern Mendocino Interior- Southeastern Mendocino Interior- 833 AM PST Thu Feb 9 2017 ...FLOOD WATCH REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... The Flood Watch continues for * A portion of northwest California, including the following areas, Coastal Del Norte, Del Norte Interior, Mendocino Coast, Northeastern Mendocino Interior, Northern Humboldt Coast, Northern Humboldt Interior, Northern Trinity, Northwestern Mendocino Interior, Southeastern Mendocino Interior, Southern Humboldt Interior, Southern Trinity, Southwestern Humboldt, and Southwestern Mendocino Interior. * Until 4 PM PST this afternoon * POTENTIAL FLOODING through this afternoon. * THE PRIMARY IMPACTS WILL BE LOCALIZED PONDING OF WATER ON LOW LYING ROADWAYS WITH POOR DRAINAGE...RISES OF ALL AREA SMALL STREAMS...RIVER FLOODING...AND POTENTIALLY ROCK AND MUD SLIDES ON MOUNTAIN ROADS. NEAR COAST FLOODING WILL BE ACCENTUATED BY HIGH TIDES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$
309 WGUS66 KEKA 092348 FFAEKA Flood Watch National Weather Service Eureka CA 348 PM PST Thu Feb 9 2017 CAZ101>113-100100- /O.EXP.KEKA.FA.A.0004.000000T0000Z-170210T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Coastal Del Norte-Del Norte Interior-Northern Humboldt Coast- Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior-Northern Trinity-Southern Trinity- Mendocino Coast-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southwestern Mendocino Interior- Southeastern Mendocino Interior- 348 PM PST Thu Feb 9 2017 ...FLOOD WATCH WILL EXPIRE AT 4 PM PST THIS AFTERNOON... The Flood Watch for a portion of Northwest California...including Del Norte...Humboldt...Trinity...and Mendocino Counties...will expire at 4 PM PST this afternoon. Heavy rain has exited the region and the threat for localized flooding of small streams has been reduced. $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 6, 9:34 PM PST | Coastal Flood Advisory | EKA | Humboldt | 12 hr |
| Feb 7, 3:29 AM PST | Gale Watch | EKA | 11 hr | |
| Feb 7, 5:18 AM PST | River Flood Warning | EKA | Mendocino | 3 days |
| Feb 7, 8:44 AM PST | Hazardous Seas Warning | EKA | 6 hr | |
| Feb 7, 9:13 AM PST | River Flood Warning | EKA | Humboldt | 3 days |
| Feb 7, 9:32 AM PST | River Flood Warning | EKA | Mendocino | 16 hr |
| Feb 7, 9:47 AM PST | River Flood Watch | EKA | Del Norte, Humboldt | 35 hr |
| Feb 7, 9:47 AM PST | River Flood Watch | EKA | Humboldt | 47 hr |
| Feb 7, 2:10 PM PST | High Wind Warning | EKA | Del Norte, Humboldt | 44 hr |
| Feb 7, 2:10 PM PST | Wind Advisory | EKA | Humboldt, Mendocino, Trinity | 44 hr |
| Feb 7, 2:11 PM PST | Coastal Flood Advisory | EKA | Del Norte, Humboldt, Mendocino | 21 hr |
| Feb 7, 2:40 PM PST | Small Craft Advisory | EKA | 26 hr | |
| Feb 7, 2:40 PM PST | Storm Watch | EKA | 13 hr | |
| Feb 7, 3:40 PM PST | River Flood Advisory | EKA | Mendocino | 8 hr |
Nearby
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.