Alert archive / California / Flash Flood Warnings in 2014
Flash Flood Warning 1, NWS Eureka, CA
NWS Eureka, CA issued this flash flood warning at Jul 22, 2014, 6:04 PM PDT for Trinity County, California. It was in force for 116 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 22, 2014, 6:04 PM PDT (01:04 UTC)
- Expired
- Jul 22, 2014, 8:00 PM PDT
- In force
- 116 min
- Issued by
- NWS Eureka, CA
- Area
- Storm-based polygon
- Flood severity
- None
County Trinity County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 118 km from the middle of the area, began a volume at 01:05 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, 1.1 hours before the alert went out and 210 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
- 364 J/kg
- Mixed-layer CIN
- -139 J/kg
- Mixed-layer LCL
- 2336 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
292
WGUS56 KEKA 230104
FFWEKA
CAC105-230300-
/O.NEW.KEKA.FF.W.0001.140723T0104Z-140723T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE EUREKA CA
604 PM PDT TUE JUL 22 2014
THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL TRINITY COUNTY IN NORTHWEST CALIFORNIA...
* UNTIL 800 PM PDT
* AT 558 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A THUNDERSTORM OVER EAST CENTRAL TRINITY COUNTY
10 MILES SOUTH OF DOUGLAS CITY. 2 TO 3 INCHES OF RAIN HAS ALREADY
ACCUMULATED AND AN ADDITIONAL 1 TO 2 INCHES IS POSSIBLE OVER THE
NEXT COUPLE OF HOURS AS STORMS CONTINUE TO MOVE OVER THE AREA.
* THE STORM PRODUCING FLASH FLOODING WILL OTHERWISE REMAIN OVER
MAINLY RURAL AREAS OF THE COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
&&
LAT...LON 4052 12279 4050 12280 4050 12283 4044 12290
4044 12292 4042 12295 4041 12299 4039 12300
4039 12303 4063 12301 4064 12277
$$
RPA2 follow-up statements
662
WGUS76 KEKA 230145
FFSEKA
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE EUREKA CA
645 PM PDT TUE JUL 22 2014
CAC105-230300-
/O.CON.KEKA.FF.W.0001.000000T0000Z-140723T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TRINITY CA-
645 PM PDT TUE JUL 22 2014
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 PM PDT FOR
CENTRAL TRINITY COUNTY...
AT 637 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER EAST CENTRAL
TRINITY COUNTY ABOUT 10 MILES SOUTH OF DOUGLAS CITY. 2 TO 3 INCHES
OF RAIN HAS ALREADY ACCUMULATED AND AN ADDITIONAL 1 TO 2 INCHES IS
POSSIBLE OVER THE NEXT COUPLE OF HOURS AS STORMS CONTINUE TO MOVE
OVER THE AREA.
RAIN WILL RUNOFF TOWARD THE NORTH IN THE DIRECTION OF HIGHWAY 3 NEAR
DOUGLAS CITY. PEOPLE IN THIS AREA SHOULD BE PREPARED FOR RAPIDLY
RISING CREEKS AND STREAMS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
&&
LAT...LON 4052 12279 4050 12280 4050 12283 4044 12290
4044 12292 4042 12295 4041 12299 4039 12300
4039 12303 4063 12301 4064 12277
$$
RPA077
WGUS76 KEKA 230258
FFSEKA
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE EUREKA CA
758 PM PDT TUE JUL 22 2014
CAC105-230305-
/O.EXP.KEKA.FF.W.0001.000000T0000Z-140723T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TRINITY CA-
758 PM PDT TUE JUL 22 2014
...THE FLASH FLOOD WARNING WILL EXPIRE AT 800 PM PDT FOR CENTRAL
TRINITY COUNTY...
THE SHOWERS HAVE TAPERED OFF AND MOST OF THE RAIN HAS MOVED OUT OF
THE AREA. CREEKS WILL REMAIN HIGH FOR THE NEXT COUPLE HOURS.
LAT...LON 4052 12279 4050 12280 4050 12283 4044 12290
4044 12292 4042 12295 4041 12299 4039 12300
4039 12303 4063 12301 4064 12277
$$
MKKThe office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 5:07 PM PDT | Areal Flood Advisory | EKA | Trinity | 113 min |
| Jul 22, 5:18 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 27 min |
| Jul 22, 6:33 PM PDT | Special Weather Statement | EKA | Trinity | 27 min |
| Jul 23, 2:22 AM PDT | Small Craft Advisory | EKA | 3 days | |
| Jul 23, 2:35 PM PDT | Gale Warning | EKA | 48 hr |
Nearby
Flash Flood Warnings in California, 2014Every flash flood warning in 2014
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.