Alert archive / California / Flash Flood Warnings in 1998
Flash Flood Warning 11, NWS Sacramento, CA
NWS Sacramento, CA issued this flash flood warning at Feb 3, 1998, 12:41 PM PST for Calaveras County, California. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 3, 1998, 12:41 PM PST (20:41 UTC)
- Expired
- Feb 3, 1998, 2:45 PM PST
- In force
- 2 hr
- Issued by
- NWS Sacramento, CA
- Area
- Whole counties
County Calaveras County, CA
The radar
The Sacramento radar (KDAX), 103 km from the middle of the area, began a volume at 20:42 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, 8.7 hours before the alert went out and 154 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
- 24 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 369 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- -50 m²/s²
- 0-3 km storm-relative helicity
- -66 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
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.
NWS Sacramento, CA wrote its last area forecast discussion before this flash flood warning went out at Feb 3, 8:30 AM PST, 4 hours 11 minutes earlier.
Area forecast discussion, Feb 3, 8:30 AM PST, 4 hours 11 minutes before
AREA FORECAST DISCUSSION...CORRECTION
NATIONAL WEATHER SERVICE SACRAMENTO CA
830 AM PST TUE FEB 3 1998
GENERALLY LIGHT TO MODERATE RAIN CONTINUES TO FALL ACROSS THE
SACRAMENTO AREA AT THIS TIME. SATELLITE IMAGERY SHOWS PLENTY OF
MOISTURE MOVING UP FROM THE SOUTH SO BELIEVE THIS LIGHT TO MODERATE
RAIN WILL CONTINUE...NOT GOOD NEWS...BUT HEAVIER AMOUNTS WE WERE
SEEING ON THE RADAR EARLIER SEEM TO BE DIMINISHING SOMEWHAT. WILL
LIKELY EXTEND SMALL RIVER AND STREAM FLOOD WARNING AS MANY ROADS AND
HOMES ARE FLOODING AT THIS TIME. SEE UPDATE LATER THIS MORNING FOR
FURTHER DETAILS. WINTER STORM WARNING STILL LOOKS GOOD. REPORTS
COMING IN INDICATE THAT THE HIGHER ELEVATIONS HAVE RECEIVED UP TO
THREE FEET OF NEW SNOW. QUICK LOOK AT MORNING ETA SHOWS NO SURPRISES
AND CONTINUES TO INDICATE A NICE BREAK FROM THE RAIN AND SNOW
WEDNESDAY...ALTHOUGH SHOWERS ARE POSSIBLE WE WILL NOT SEE THE HEAVIER
RAIN AND SNOW WE HAVE SEEN OVER THE LAST 24 HOURS. THIS BREAK WILL BE
VERY IMPORTANT AS THE NEXT SYSTEM BEGINS TO BRING PRECIPITATION TO
THE COAST WEDNESDAY NIGHT. THE BREAK TIME IS NEEDED TO EMPTY SOME
SPACE IN THE AREAS CREEKS AND STREAMS. DANIELSON
STO...WINTER STORM WARNING THROUGH NOON FOR THE WEST SLOPES OF THE
SIERRA NEVADA NORTH OF YOSEMITE ABOVE 6000 FEET.
SMALL RIVER AND STREAM FLOOD WARNING UNTIL 10 AM FOR THE
INTERIOR OF NORTHERN CALIFORNIA BELOW 3000 FEET.The office that day
Everything else NWS Sacramento, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 2, 5:57 PM PST | Flash Flood Warning | STO | Glenn, Tehama | 3 hr |
| Feb 3, 2:30 AM PST | Flash Flood Warning | STO | Tehama | 3 hr |
| Feb 3, 12:09 PM PST | Flash Flood Warning | STO | Amador, El Dorado | 51 min |
Nearby
Flash Flood Warnings in California, 1998Every flash flood warning in 1998
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.