Alert archive / California / Flash Flood Warnings in 1986
Flash Flood Warning 2, NWS Sacramento, CA
NWS Sacramento, CA issued this flash flood warning at Feb 15, 1986, 12:35 AM PST for Butte County, Glenn County, Tehama County, California. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Feb 15, 1986, 12:35 AM PST (08:35 UTC)
- Expired
- Feb 15, 1986, 9:00 AM PST
- In force
- 8 hr
- Issued by
- NWS Sacramento, CA
- Area
- Whole counties
Counties Butte County, CA, Glenn County, CA, Tehama County, CA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Oakland, CA (KOAK), launched 00:00Z, 8.6 hours before the alert went out and 230 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
- 209 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 794 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 188 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 4.8
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Feb 14, 9:00 PM PST, 3 hours 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
9 PM PST FRI FEB 14 1986
...HIGH WIND WARNING TONIGHT FOR THE ENTIRE COAST FROM THE OREGON
BORDER TO POINT CONCEPTION FOR STRONG GUSTY SOUTH WINDS
TO 60 MPH...
...WINTER STORM WARNING TONIGHT AND SATURDAY IN THE SIERRA NEVADA
...WINTER STORM WATCH LATE TONIGHT AND SATURDAY IN THE MOUNT SHASTA
SISKIYOU AREA FOR LOWERING SNOW LEVELS AND GUSTY WINDS...
THE MASSIVE PACIFIC STORM THAT BROUGHT HEAVY RAINS AND HIGH WINDS
TO CALIFORNIA EARLIER TODAY WILL CONTINUE TO CAUSE PROBLEMS TONIGHT
AND SATURDAY. THE STEADY RAIN HAS NOW GIVEN WAY TO SHOWERS AND
THESE WILL CONTINUE OVERNIGHT AND INTO SATURDAY ACCOMPANIED BY
HEAVY DOWNPOURS OF RAIN AND POSSIBLE THUNDER AND LIGHTNING.
THE STRONG WINDS OF EARLIER TODAY HAVE DECREASED SOMEWHAT AFTER
PEAKING IN THE 60 TO 80 MPH RANGE AT SOME EXPOSED LOCATIONS. GUSTS
OF 40 TO 60 MPH WILL CONTINUE OVERNIGHT ESPECIALLY IN EXPOSED
COASTAL AND HILLTOP LOCATIONS IN THE VICINITY OF THE HEAVY SHOWERS.
IN THE MOUNTAINS THE RAIN IS CHANGING TO SNOW AND HEAVY ACCUMULATIONS
ARE EXPECTED ABOVE ABOUT 5000 TO 7000 FEET. THE STRONG WINDS
ACCOMPANYING THE HEAVY SNOW WILL MAKE TRAVEL VERY HAZARDOUS IF NOT
IMPOSSIBLE.
ANYONE EXPECTING TO TRAVEL OVER THE NEXT TWO DAYS SHOULD MONITOR
THE LATEST WEATHER FORECASTS AND ADVISORIES. TRAVELERS THROUGH
MOUNTAIN AREAS SHOULD BE ESPECIALLY PREPARED FOR VERY DIFFICULT
DRIVING CONDITIONS. PLEASE CONSULT THE FLASH FLOOD STATEMENT FOR
THE LATEST INFORMATION ON HEAVY RAINS AND FLASH FLOOD WATCHES AND
POSSIBLE WARNINGS.
ADDITIONAL SPECIAL WEATHER STATEMENTS WILL BE ISSUED AS NEEDED.
PERICHTSpecial weather statement, Feb 14, 11:42 PM PST, 53 minutes before
SPECIAL WEATHER AND RADAR STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CALIF 1135 PM PST FRI FEB 14 1986 ....THUNDERSTORMS INCREASING OVER AND WEST OF COAST RANGE.... ....THUNDERSTORMS INCREASING OVER NORTHERN SACRAMENTO VALLEY.... AT 1130 PM..VERY HEAVY THUNDERSTORMS WERE CENTERED JUST NORTH OF WILLIAMS /IN THE SACRAMENTO VALLEY/ AND 10 MILES WEST OF SAN FRAN- CISCO. THE CELLS WERE MOVING TOWARD THE NORTHEAST AT 40 MPH. ISOLATED VERY HEAVY THUNDERSTORMS WERE ALSO SEEN CLUSTERED AROUND SANTA ROSA AND OVER NORTHERN MARIN COUNTY..THOUGH NOT QUITE AS INTENSE AT THE TWO CELLS ABOVE. ALL THIS ACTION WAS PART OF A LARGE AREA OF SHOWERS AND THUNDERSHOWERS THAT EXTENDED FROM REDDING TO 30 MILES WEST OF MONTEREY. ELSEWHERE..RAIN AND SNOWSHOWERS WERE SEEN FROM SOUTH OF SUSANVILLE TO SONORA. ISOLATED HEAVY SHOWERS WERE DETECTED EAST OF SACRAMENTO AND EAST OF FAIRFIELD. A MARTINI
The office that day
Everything else NWS Sacramento, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 14, 5:15 PM PST | Flash Flood Warning | STO | Tehama | 4 hr |
Nearby
Flash Flood Warnings in California, 1986Every flash flood warning in 1986
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.