Alert archive / California / Areal Flood Advisories in 2012
Areal Flood Advisory 11, NWS Eureka, CA
NWS Eureka, CA issued this areal flood advisory at Nov 29, 2012, 10:05 PM PST for Mendocino County, California. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Nov 29, 2012, 10:05 PM PST (06:05 UTC)
- Expired
- Nov 30, 2012, 4:00 AM PST
- In force
- 6 hr
- Issued by
- NWS Eureka, CA
- Area
- Storm-based polygon
County Mendocino County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 139 km from the middle of the area, began a volume at 06:05 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, 6.1 hours before the alert went out and 331 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
- 658 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- 331 m²/s²
- 0-3 km storm-relative helicity
- 525 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Eureka, CA wrote its last area forecast discussion before this areal flood advisory went out at Nov 29, 8:33 PM PST, 1 hour 32 minutes earlier.
Area forecast discussion, Nov 29, 8:33 PM PST, 1 hour 32 minutes before
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</html>Hazardous weather outlook, Nov 29, 3:26 PM PST, 6 hours 39 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EUREKA CA 326 PM PST THU NOV 29 2012 CAZ003-302330- NORTH COAST INTERIOR- 326 PM PST THU NOV 29 2012 ...HIGH WIND WARNING IN EFFECT UNTIL 8 PM PST THIS EVENING... ...FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. A HIGH WIND WARNING IS CURRENTLY IN EFFECT. A FLOOD WATCH IS CURRENTLY IN EFFECT. A STORM SYSTEM WILL CONTINUE TO BRING HEAVY RAIN AND GUSTY WINDS OVERNIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. THE WET AND UNSETTLED WEATHER WILL CONTINUE THROUGH THE WEEKEND WITH ABUNDANT RAINFALL AND SHARP RISES ON AREA RIVERS AND STREAMS. FLOODING IN SOME LOCATIONS ON THE MAINSTEM RIVERS IS EXPECTED. SPECIFIC FLOOD PRODUCTS WILL BE ISSUED AS THE FLOODING NEARS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. CAZ001-302330- REDWOOD COAST- 326 PM PST THU NOV 29 2012 ...FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. A FLOOD WATCH IS CURRENTLY IN EFFECT. A STORM SYSTEM WILL CONTINUE TO BRING HEAVY RAIN AND GUSTY WINDS OVERNIGHT ALONG WITH THE THREAT OF THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. THE WET AND UNSETTLED WEATHER WILL CONTINUE THROUGH THE WEEKEND WITH ABUNDANT RAINFALL AND SHARP RISES ON AREA RIVERS AND STREAMS. FLOODING IN SOME LOCATIONS ON THE MAINSTEM RIVERS IS EXPECTED. SPECIFIC FLOOD PRODUCTS WILL BE ISSUED AS THE FLOODING NEARS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. CAZ004-076-302330- UPPER TRINITY RIVER-MENDOCINO INTERIOR- 326 PM PST THU NOV 29 2012 ...FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. A FLOOD WATCH IS CURRENTLY IN EFFECT. A STORM SYSTEM WILL CONTINUE TO BRING HEAVY RAIN AND GUSTY WINDS OVERNIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. THE WET AND UNSETTLED WEATHER WILL CONTINUE THROUGH THE WEEKEND WITH ABUNDANT RAINFALL AND SHARP RISES ON AREA RIVERS AND STREAMS. FLOODING IN SOME LOCATIONS ON THE MAINSTEM RIVERS IS EXPECTED. SPECIFIC FLOOD PRODUCTS WILL BE ISSUED AS THE FLOODING NEARS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. CAZ002-302330- MENDOCINO COAST- 326 PM PST THU NOV 29 2012 ...FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT... ...WIND ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 6 AM PST FRIDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. A FLOOD WATCH IS CURRENTLY IN EFFECT. A WIND ADVISORY IS CURRENTLY IN EFFECT. A STORM SYSTEM WILL CONTINUE TO BRING HEAVY RAIN AND GUSTY WINDS OVERNIGHT ALONG WITH THE THREAT OF THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. THE WET AND UNSETTLED WEATHER WILL CONTINUE THROUGH THE WEEKEND WITH ABUNDANT RAINFALL AND SHARP RISES ON AREA RIVERS AND STREAMS. FLOODING IN SOME LOCATIONS ON THE MAINSTEM RIVERS IS EXPECTED. SPECIFIC FLOOD PRODUCTS WILL BE ISSUED AS THE FLOODING NEARS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Nov 29, 6:11 PM PST, 3 hours 54 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EUREKA CA
611 PM PST THU NOV 29 2012
CAZ001-003-300245-
DEL NORTE CA-
611 PM PST THU NOV 29 2012
THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
DEL NORTE COUNTY IN NORTHWEST CALIFORNIA
UNTIL 645 PM PST
AT 608 PM PST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR GASQUET...MOVING NORTHEAST AT 60 MPH.
WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM....ALONG WITH
HEAVY RAIN. ADDITIONAL SHOWERS WILL IMPACT COASTAL AND SOUTH CENTRAL
PORTIONS OF DEL NORTE COUNTY BRINGING STRONG WINDS AND HEAVY RAIN.
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
LAT...LON 4200 12369 4151 12397 4149 12407 4172 12416
4175 12421 4201 12405
TIME...MOT...LOC 0211Z 207DEG 51KT 4190 12398
RPALocal storm report, Nov 29, 6:16 PM PST, 3 hours 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EUREKA CA
616 PM PST THU NOV 29 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0614 PM LIGHTNING GASQUET 41.85N 123.97W
11/29/2012 DEL NORTE CA PUBLIC
CONTINOUS THUNDERSTORM WITH NUMEROUS LIGHTNING FLASHES
OVERHEAD HEADING TOWARD THE EAST NORTH EAST. ASSOCIATED
WINDS VERY STRONG.
&&
ASHFORDLocal storm report, Nov 29, 6:24 PM PST, 3 hours 41 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EUREKA CA
624 PM PST THU NOV 29 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0551 PM FLOOD CRESCENT CITY 41.74N 124.16W
11/29/2012 DEL NORTE CA LAW ENFORCEMENT
VICINITY OF CRESCENT CITY...SANDMINE RD...ROADWAY
FLOODED.
0551 PM FLOOD CRESCENT CITY 41.79N 124.19W
11/29/2012 DEL NORTE CA LAW ENFORCEMENT
VICNITY OF CRESCENT CITY NORHT...LAKE EARL
DRIVE...FLOODING.
0551 PM FLOOD CRESCENT CITY 41.71N 124.14W
11/29/2012 DEL NORTE CA LAW ENFORCEMENT
VICNITY OF CRESCENT CITY ON ENDERT BEACH RD...FLOODING.
&&
ASHFORDSpecial weather statement, Nov 29, 7:31 PM PST, 2 hours 34 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EUREKA CA
731 PM PST THU NOV 29 2012
CAZ001>003-076-300415-
HUMBOLDT CA-MENDOCINO CA-
731 PM PST THU NOV 29 2012
THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
EXTREME NORTHWESTERN MENDOCINO COUNTY IN NORTHWEST CALIFORNIA
SOUTHERN HUMBOLDT COUNTY IN NORTHWEST CALIFORNIA
UNTIL 815 PM PST
AT 726 PM PST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 36 MILES SOUTHWEST
OF PETROLIA TO 18 MILES SOUTHWEST OF SHELTER COVE...AND MOVING NORTH
AT 45 MPH.
WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS....ALONG WITH
HEAVY RAIN.
SOME LOCATIONS IMPACTED INCLUDE SHELTER COVE...ETTERSBURG...AND
HONEYDEW.
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
LAT...LON 4051 12440 4053 12437 4029 12358 3989 12382
3984 12390 3998 12401 4002 12409 4008 12410
4012 12419 4017 12424 4025 12437 4033 12436
4038 12438 4043 12442
TIME...MOT...LOC 0329Z 201DEG 39KT 4002 12479 3982 12419
RPASpecial weather statement, Nov 29, 8:20 PM PST, 1 hour 45 minutes before
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</html>The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 29, 4:59 PM PST | Areal Flood Advisory | EKA | Del Norte | 4 hr |
| Nov 29, 5:34 PM PST | Areal Flood Advisory | EKA | Humboldt | 4 hr |
| Nov 29, 6:11 PM PST | Special Weather Statement | EKA | Del Norte | 34 min |
| Nov 29, 6:26 PM PST | Areal Flood Warning | EKA | Del Norte | 3 hr |
| Nov 29, 7:31 PM PST | Special Weather Statement | EKA | 44 min | |
| Nov 29, 7:42 PM PST | Special Marine Warning | EKA | 33 min | |
| Nov 29, 8:17 PM PST | Special Marine Warning | EKA | 28 min | |
| Nov 29, 8:20 PM PST | Special Weather Statement | EKA | Del Norte | 25 min |
| Nov 29, 9:02 PM PST | Areal Flood Advisory | EKA | Del Norte, Humboldt, Mendocino, Trinity | 3 hr |
| Nov 30, 3:15 AM PST | Gale Warning | EKA | 24 hr | |
| Nov 30, 3:15 AM PST | Small Craft Advisory | EKA | 41 hr | |
| Nov 30, 2:31 PM PST | Flood Watch | EKA | 44 hr | |
| Nov 30, 2:31 PM PST | High Wind Watch | EKA | 13 hr | |
| Nov 30, 3:19 PM PST | River Flood Watch | EKA | Mendocino | 18 hr |
| Nov 30, 3:19 PM PST | River Flood Watch | EKA | Mendocino | 18 hr |
Nearby
Areal Flood Advisories in California, 2012Every areal flood advisory in 2012
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.