Alert archive / California / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 3, NWS Eureka, CA
NWS Eureka, CA issued this severe thunderstorm warning at Jul 4, 2015, 5:36 PM PDT for Trinity County, California. It was in force for 28 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 4, 2015, 5:36 PM PDT (00:36 UTC)
- Expired
- Jul 4, 2015, 6:04 PM PDT
- In force
- 28 min
- Issued by
- NWS Eureka, CA
- Area
- Storm-based polygon
County Trinity County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 101 km from the middle of the area, began a volume at 00:36 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, 0.6 hours before the alert went out and 222 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
- 3806 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
095 WUUS56 KEKA 050036 SVREKA CAC105-050115- /O.NEW.KEKA.SV.W.0003.150705T0036Z-150705T0115Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EUREKA 536 PM PDT SAT JUL 4 2015 THE NATIONAL WEATHER SERVICE IN EUREKA CALIFORNIA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL TRINITY COUNTY IN NORTHWESTERN CALIFORNIA... * UNTIL 615 PM PDT * AT 534 PM PDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR PEANUT...OR 7 MILES WEST OF YOLLA BOLLY DISTRICT RS...AND MOVING NORTH AT 5 MPH OR NEARLY STATIONARY. * FLASH FLOOD WARNING IS IN EFFECT FOR THE AREA. * LOCATIONS IMPACTED INCLUDE... PRIMARILY RURAL AREAS SOUTH OF HIGHWAY 36 AND EAST OF PEANUT. PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER... IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 4032 12307 4032 12317 4048 12321 4048 12301 TIME...MOT...LOC 0034Z 188DEG 5KT 4038 12311 $$ STP
2 follow-up statements
725 WWUS56 KEKA 050057 SVSEKA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EUREKA 557 PM PDT SAT JUL 4 2015 CAC105-050115- /O.CON.KEKA.SV.W.0003.000000T0000Z-150705T0115Z/ TRINITY CA- 557 PM PDT SAT JUL 4 2015 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM PDT FOR SOUTHERN TRINITY COUNTY... AT 556 PM PDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR KNOB...OR NEAR YOLLA BOLLY DISTRICT RS...MOVING NORTH AT 5 MPH OR NEARLY STATIONARY. THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF SOUTHERN TRINITY COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS. IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER... IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 4032 12307 4032 12314 4045 12316 4045 12302 TIME...MOT...LOC 0056Z 201DEG 4KT 4037 12308 $$ STP
249
WWUS56 KEKA 050104
SVSEKA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EUREKA
604 PM PDT SAT JUL 4 2015
CAC105-050114-
/O.CAN.KEKA.SV.W.0003.000000T0000Z-150705T0115Z/
TRINITY CA-
604 PM PDT SAT JUL 4 2015
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN TRINITY COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.
LAT...LON 4032 12307 4032 12314 4045 12316 4045 12302
TIME...MOT...LOC 0103Z 188DEG 5KT 4038 12308
$$
STPThe office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 5:13 PM PDT | Flash Flood Warning | EKA | Trinity | 2 hr |
| Jul 4, 5:28 PM PDT | Special Weather Statement | EKA | Trinity | 32 min |
| Jul 4, 6:28 PM PDT | Special Weather Statement | EKA | Trinity | 32 min |
| Jul 5, 4:45 PM PDT | Special Weather Statement | EKA | Trinity | 30 min |
Nearby
Severe Thunderstorm Warnings in California, 2015Every severe thunderstorm warning in 2015
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.