Alert archive / California / Flash Flood Warnings in 2025

Flash Flood Warning 4, NWS Eureka, CA

July 25, 2025Trinity County, California

NWS Eureka, CA issued this flash flood warning at Jul 25, 2025, 3:29 PM PDT for Trinity County, California. It was in force for 78 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 25, 2025, 3:29 PM PDT (22:29 UTC)
Expired: Jul 25, 2025, 4:47 PM PDT
In force: 78 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), 109 km from the middle of the area, began a volume at 22:30 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

Oakland, CA (KOAK), launched 12:00Z, 10.5 hours before the alert went out and 291 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 618 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

206 
WGUS56 KEKA 252229
FFWEKA
CAC105-260030-
/O.NEW.KEKA.FF.W.0004.250725T2229Z-250726T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Eureka CA
329 PM PDT Fri Jul 25 2025

The National Weather Service in Eureka has issued a

* Flash Flood Warning for...
  South Central Trinity County in northwestern California...

* Until 530 PM PDT.

* At 329 PM PDT, Doppler radar indicated thunderstorms producing 
  heavy rain 23 miles south of Peanut, or 27 miles northeast of 
  Covelo, moving northeast at 5 mph. Between 1 and 4 inches of rain 
  have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Mainly rural areas of South Central Trinity County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Flooding is occurring or is imminent. It is important to know where 
you are relative to streams, rivers, or creeks which can become 
killers in heavy rains. Campers and hikers should avoid streams or 
creeks.

&&

LAT...LON 4004 12308 4037 12329 4041 12300 4040 12300
      4038 12302 4037 12302 4036 12304 4035 12304
      4035 12306 4033 12307 4031 12306 4030 12307
      4027 12305 4024 12298 4021 12298 4019 12297
      4015 12299 4014 12297 4009 12296

FLASH FLOOD...RADAR INDICATED

$$

DB

1 follow-up statement

273 
WGUS76 KEKA 252347
FFSEKA

Flash Flood Statement
National Weather Service Eureka CA
447 PM PDT Fri Jul 25 2025

CAC105-252357-
/O.CAN.KEKA.FF.W.0004.000000T0000Z-250726T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Trinity CA-
447 PM PDT Fri Jul 25 2025

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTH CENTRAL TRINITY 
COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

&&

LAT...LON 4004 12308 4037 12329 4041 12300 4040 12300
      4038 12302 4037 12302 4036 12304 4035 12304
      4035 12306 4033 12307 4031 12306 4030 12307
      4027 12305 4024 12298 4021 12298 4019 12297
      4015 12299 4014 12297 4009 12296

$$

DB

The office that day

Everything else NWS Eureka, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 25, 2:20 PM PDT	Special Weather Statement	EKA		25 min
Jul 25, 2:37 PM PDT	Severe Thunderstorm Warning	EKA	Trinity	38 min
Jul 25, 2:49 PM PDT	Special Weather Statement	EKA	Trinity	26 min
Jul 25, 3:05 PM PDT	Severe Thunderstorm Warning	EKA	Trinity	40 min
Jul 25, 3:28 PM PDT	Special Weather Statement	EKA	Trinity	32 min
Jul 25, 3:45 PM PDT	Special Weather Statement	EKA	Trinity	30 min
Jul 25, 3:58 PM PDT	Severe Thunderstorm Warning	EKA	Trinity	47 min
Jul 25, 4:27 PM PDT	Special Weather Statement	EKA	Trinity	33 min
Jul 25, 4:45 PM PDT	Special Weather Statement	EKA	Trinity	30 min
Jul 25, 4:55 PM PDT	Special Weather Statement	EKA	Trinity	35 min

Nearby

Flash Flood Warnings in California, 2025 Every flash flood warning in 2025

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.