Alert archive / California / Flood Watches in 2016
Flood Watch 8, NWS Eureka, CA
NWS Eureka, CA issued this flood watch at Nov 24, 2016, 3:26 AM PST for Del Norte County, Humboldt County, California. It took effect at Nov 24, 2016, 10:00 PM PST. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Nov 24, 2016, 3:26 AM PST (11:26 UTC)
- In effect from
- Nov 24, 2016, 10:00 PM PST
- Expired
- Nov 25, 2016, 8:52 AM PST
- In force
- 11 hr
- Issued by
- NWS Eureka, CA
- Flood severity
- None
Counties Del Norte County, CA, Humboldt County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 86 km from the middle of the area, began a volume at 11:23 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 00:00Z, 11.4 hours before the alert went out and 158 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
- 1 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 960 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 248 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
267 WGUS66 KEKA 241126 FFAEKA URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE EUREKA CA 326 AM PST THU NOV 24 2016 CAZ101-102-105-241930- /O.NEW.KEKA.FA.A.0008.161125T0600Z-161126T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COASTAL DEL NORTE-DEL NORTE INTERIOR-NORTHERN HUMBOLDT INTERIOR- 326 AM PST THU NOV 24 2016 ...FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH SATURDAY MORNING... 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 AND NORTHERN HUMBOLDT INTERIOR. * FROM THIS EVENING THROUGH SATURDAY MORNING * AN APPROACHING COLD FRONT WILL BRING PERIODS OF HEAVY RAIN THAT MAY RESULT RESULT IN URBAN AND SMALL STREAM FLOODING. * THE PRIMARY IMPACTS FROM THIS EVENT WILL BE LOCALIZED PONDING OF WATER ON LOW LYING ROADWAYS WITH POOR DRAINAGE...RAPID RISES OF SMALL STREAMS...AND POTENTIALLY ROCK AND MUD SLIDES ON MOUNTAIN ROADS. 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. && $$
2 follow-up statements
243 WGUS66 KEKA 241933 FFAEKA FLOOD WATCH NATIONAL WEATHER SERVICE EUREKA CA 1133 AM PST THU NOV 24 2016 CAZ101-102-105-251800- /O.CON.KEKA.FA.A.0008.161125T0600Z-161126T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COASTAL DEL NORTE-DEL NORTE INTERIOR-NORTHERN HUMBOLDT INTERIOR- 1133 AM PST THU NOV 24 2016 ...FLOOD WATCH REMAINS IN EFFECT FROM 10 PM PST THIS EVENING THROUGH SATURDAY MORNING... THE FLOOD WATCH CONTINUES FOR * A PORTION OF NORTHWEST CALIFORNIA...INCLUDING THE FOLLOWING AREAS...COASTAL DEL NORTE...DEL NORTE INTERIOR AND NORTHERN HUMBOLDT INTERIOR. * FROM 10 PM PST THIS EVENING THROUGH SATURDAY MORNING * AN APPROACHING COLD FRONT WILL BRING PERIODS OF HEAVY RAIN THAT MAY RESULT RESULT IN URBAN AND SMALL STREAM FLOODING. * THE PRIMARY IMPACTS FROM THIS EVENT WILL BE LOCALIZED PONDING OF WATER ON LOW LYING ROADWAYS WITH POOR DRAINAGE...RAPID RISES OF SMALL STREAMS...AND POTENTIALLY ROCK AND MUD SLIDES ON MOUNTAIN ROADS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON CURRENT FORECASTS. YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP. && $$
965 WGUS66 KEKA 251652 FFAEKA URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE EUREKA CA 852 AM PST FRI NOV 25 2016 CAZ101-102-105-260600- /O.CAN.KEKA.FA.A.0008.000000T0000Z-161126T1800Z/ /O.NEW.KEKA.FA.A.0009.161126T0600Z-161126T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COASTAL DEL NORTE-DEL NORTE INTERIOR-NORTHERN HUMBOLDT INTERIOR- 852 AM PST FRI NOV 25 2016 ...FLOOD WATCH IN EFFECT FROM 10 PM THIS EVENING THROUGH SATURDAY MORNING... 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 AND NORTHERN HUMBOLDT INTERIOR. * FROM LATE THIS EVENING THROUGH SATURDAY MORNING. * A COLD FRONT WILL BRING PERIODS OF HEAVY RAIN TONIGHT THAT MAY RESULT IN MINOR URBAN AND SMALL STREAM FLOODING BY EARLY SATURDAY MORNING. * THE PRIMARY IMPACTS FROM THIS EVENT WILL BE LOCALIZED PONDING OF WATER ON LOW LYING ROADWAYS WITH POOR DRAINAGE...RAPID RISES OF SMALL STREAMS...AND POTENTIALLY ROCK AND MUD SLIDES ON MOUNTAIN ROADS. 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. && $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 23, 9:36 PM PST | Frost Advisory | EKA | Mendocino | 11 hr |
| Nov 24, 3:09 AM PST | Wind Advisory | EKA | Del Norte, Humboldt | 30 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.