Alert archive / California / Tornado Warnings in 1986
Tornado Warning 3, NWS Sacramento, CA
NWS Sacramento, CA issued this tornado warning at Sep 24, 1986, 6:12 PM PDT for Calaveras County, Tuolumne County, California. It was in force for 63 min.
The area
The counties it named.
The facts
- Issued
- Sep 24, 1986, 6:12 PM PDT (01:12 UTC)
- Expired
- Sep 24, 1986, 7:15 PM PDT
- In force
- 63 min
- Issued by
- NWS Sacramento, CA
- Area
- Whole counties
Counties Calaveras County, CA, Tuolumne 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, 1.2 hours before the alert went out and 176 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
- 324 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 748 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 tornado 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, Sep 24, 3:59 PM PDT, 2 hours 13 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO, CA 400 PM PST WED SEP 24 1986 A LINE OF SEVERE THUNDERSTORMS PASSED THROUGH THE VALLEY BETWEEN SACRAMENTO AND MARYSVILLE BETWEEN 3:30 AND 4:00 THIS AFTERNOON. .11" OF RAIN FELL IN 7 MINUTES IN DOWNTOWN SACRAMENTO AS THE LINE OF THUNDERSTORMS PASSED THROUGH. THE LINE OF THUNDERSTORMS WAS DECREASING IN INTENSITY AS IT MOVED EASTWARD INTO THE SIERRA FOOTHILLS. THE SEVERE THUNDERSTORM WARsNING FOR THE SACRAMENTO VALLEY ENDED AT 4:00 PM. NO FURTHER ISSUANCE ON THIS STORM IS EXPECTED.
Local storm report, Sep 24, 5:43 PM PDT, 29 minutes before
^SFOLSRRDD LOCAL STORM REPORT NATIONAL WEATHER SERVICE REDDING CA 5:30 PM WED SEP 24, 1986 THIS LOCAL SEVERE STORM REPORT IS PRELIMINARY. A TOUR OF THE DAMAGE AREA IS SCHEDULED FOR TOMORROW (THURS. SEPT 25TH) WITH THE LOCAL MIC AND COUNTY OFFICIALS. A FINAL WRITTEN REPORT WILL GO INTO WSFO SFO AFTER THE SITUATION IS THOROUGHLY ASSESSED IN NEXT FEW DAYS. WEATHER EVENT: TORNADO AND SEVERAL FUNNEL CLOUD SIGHTINGS. LOCATION: SOUTHEAST TEHAMA COUNTY, ROUGHLY HALFWAY BETWEEN CHICO AND RED BLUFF....BETWEEN SETTLEMENT OF VINA AND THE SACRAMENTO RIVER. MOVEMENT OF FUNNEL CLOUD: SOUTHEAST TOWARD OROVILLE. KNOWN DAMAGE: 8 DAMAGED STRUCTURES AND ONE MINOR INJURY (BROKEN ARM) AREA WEATHER: LARGE LINE OF SEVERE OR NEAR SVR THUNDERSTORMS DEVELOP ED LATE MORNING NORTHERN SACRAMENTO VALLEY...ABUNDANT LOW-LEVEL MOIS- TURE, COLD ADVECTION ALOFT, INCREASING INSTABILITY AHEAD OF SHORT- WAVE TROUGH ALONG NORTHERN CALIFORNIA COAST. SNOOK, FCSTR
The office that day
Everything else NWS Sacramento, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 25, 3:45 PM PDT | Severe Thunderstorm Warning | STO | Butte | 90 min |
Nearby
Tornado Warnings in California, 1986Every tornado warning in 1986Tornadoes 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.