Alert archive / California / Flash Flood Warnings in 2011
Flash Flood Warning 5, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this flash flood warning at Mar 24, 2011, 5:27 PM PDT for Monterey County, California. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Mar 24, 2011, 5:27 PM PDT (00:27 UTC)
- Expired
- Mar 24, 2011, 8:45 PM PDT
- In force
- 3 hr
- Issued by
- NWS San Francisco Bay Area, CA
- Area
- Storm-based polygon
- Flood severity
- None
County Monterey County, CA
The radar
The San Francisco radar (KMUX), 101 km from the middle of the area, began a volume at 00:27 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 00:00Z, 0.5 hours before the alert went out and 168 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
- 2 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 686 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- -14 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
815
WGUS56 KMTR 250027
FFWMTR
CAC053-250215-
/O.NEW.KMTR.FF.W.0005.110325T0027Z-110325T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
527 PM PDT THU MAR 24 2011
THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS
ISSUED A
* FLASH FLOOD WARNING FOR...
THE BIG SUR RIVER IN MONTEREY COUNTY IN WESTERN CALIFORNIA...
* UNTIL 715 PM PDT.
* AT 517 PM PDT...NWS DOPPLER RADAR AND AUTOMATED RAIN GAGES
INDICATED HEAVY RAINFALL IN SHOWERS MOVING THROUGH THE WARNING
AREA. THE CURRENT STAGE AT THE BIG SUR RIVER NEAR BIG SUR IS 9.25
FEET...STILL BELOW THE FLOOD STAGE OF 10 FEET. HOWEVER WITH MORE
SHOWERS EXPECTED IN THE NEXT HOUR OR TWO EXPECT THIS LOCATION TO
REACH FLOOD STAGE BEFORE BEGINNING TO RECEDE AFTER THE SHOWERS HAVE
ENDED OVER THE BASIN.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.
DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATER OR WATER OF UNKNOWN
DEPTH. TURN AROUND...DONT DROWN.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE.
LAT...LON 3621 12178 3623 12182 3624 12185 3626 12185
3628 12188 3632 12190 3628 12177 3627 12169
3620 12165
$$
WJK2 follow-up statements
748
WGUS56 KMTR 250222
FFWMTR
CAC053-250345-
/O.EXT.KMTR.FF.W.0005.000000T0000Z-110325T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
722 PM PDT THU MAR 24 2011
THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS
EXTENDED THE
* FLASH FLOOD WARNING FOR...
THE BIG SUR RIVER IN MONTEREY COUNTY IN WESTERN CALIFORNIA...
* UNTIL 845 PM PDT.
* AT 700 PM PDT...THE BIG SUR RIVER NEAR BIG SUR STAGE WAS AT 10.35
FEET AND IS EXPECTED TO CONTINUE ABOVE FLOOD STAGE AS CONTINUED
SHOWERS MOVE OVER THE AREA. THE SHOWER ACTIVITY IS EXPECTED TO BE
THROUGH THE AREA IN THE NEXT HOUR TO TWO WHEN THE RIVER SHOULD BEGIN
TO RECEDE.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ANDREW
MOLERA STATE PARK
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE.
LAT...LON 3621 12178 3623 12182 3624 12185 3626 12185
3628 12188 3632 12190 3628 12177 3627 12169
3620 12165
$$
WJK509
WGUS76 KMTR 250347
FFSMTR
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
847 PM PDT THU MAR 24 2011
CAC053-250354-
/O.EXP.KMTR.FF.W.0005.000000T0000Z-110325T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONTEREY CA-
847 PM PDT THU MAR 24 2011
...THE FLASH FLOOD WARNING WAS ALLOWED TO EXPIRE AT 845 PM PDT FOR
THE BIG SUR RIVER IN MONTEREY COUNTY...
AT 8:37 PM PDT THE LEVEL OF THE BIG SUR RIVER WAS AT 9.9
FEET...WHICH IS JUST BELOW FLOOD STAGE OF 10 FEET. THE RIVER LEVEL
IS TRENDING DOWN AND IS EXPECTED TO FALL THROUGH THE REMAINDER OF
THE EVENING. THEREFORE...THE FLASH FLOOD WARNING WAS ALLOWED TO
EXPIRE AT 8:45 PM. SCATTERED SHOWERS ARE FORECAST FOR THE REMAINDER
OF THE EVENING. SOME SHOWERS MAY PRODUCE BRIEF HEAVY RAIN.
HOWEVER...FURTHER RISES ARE NOT EXPECTED ON THE BIG SUR RIVER.
LAT...LON 3621 12178 3623 12182 3624 12185 3626 12185
3628 12188 3632 12190 3628 12177 3627 12169
3620 12165
$$
DYKEMAThe office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 24, 5:03 PM PDT | Flash Flood Warning | MTR | San Mateo | 2 hr |
| Mar 24, 9:58 PM PDT | Small Craft Advisory for Hazardous Seas | MTR | 26 hr | |
| Mar 25, 3:09 PM PDT | Small Craft Advisory | MTR | 24 hr | |
| Mar 25, 3:09 PM PDT | High Surf Advisory | MTR | Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 8 hr |
Nearby
Flash Flood Warnings in California, 2011Every flash flood warning in 2011
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.