Alert archive / California / River Flood Warnings in 2017
River Flood Warning 21, NWS Reno, NV
NWS Reno, NV issued this river flood warning at Feb 18, 2017, 4:05 PM PST for Plumas County, California. It took effect at Feb 21, 2017, 8:00 AM PST. It was in force for 56 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 18, 2017, 4:05 PM PST (00:05 UTC)
- In effect from
- Feb 21, 2017, 8:00 AM PST
- Expired
- Feb 23, 2017, 4:01 PM PST
- In force
- 56 hr
- Issued by
- NWS Reno, NV
- Area
- Storm-based polygon
- Flood severity
- Moderate
County Plumas County, CA
The radar
The Reno radar (KRGX), 96 km from the middle of the area, began a volume at 00:06 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 river
Written for the forecast point Middle Fork Feather River near Portola (MFTC1).
- Action stage
- 4851 ft
- Minor stage
- 4852.5 ft
- Moderate stage
- 4853.5 ft
- Major stage
- 4855.5 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 11392100, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
The text
As transmitted.
024 WGUS45 KREV 190005 FLWREV FLOOD WARNING NATIONAL WEATHER SERVICE RENO, NV 405 PM PST SAT FEB 18 2017 ...The National Weather Service in Reno has issued a Flood Warning for the following rivers in California... Middle Fork Feather River Near Portola affecting Plumas County For the Middle Fork Feather River...including Portola...Moderate flooding is forecast. A strong atmospheric river will push through the region late Sunday night through early Tuesday bringing heavy rainfall to much of northeast California. The current forecast for the Middle Fork of Feather at Portola will be similar to levels reached January 9-10 of this year and not nearly as high as what was experienced last week. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive cars through flooded areas as rushing water can easily sweep a car away... The next forecast update for these locations will be issued at about 9 am Sunday. && CAC063-200605- /O.NEW.KREV.FL.W.0021.170221T1600Z-000000T0000Z/ /MFTC1.2.RS.170221T1600Z.170222T0900Z.000000T0000Z.UU/ 405 PM PST SAT FEB 18 2017 The National Weather Service in Reno has issued a * Flood Warning for The Middle Fork Feather River Near Portola. * from Tuesday morning until further notice...Or until the warning is cancelled. * At 3:30 PM Saturday the stage was 6.2 feet. * Flood stage is 8.5 feet. * Moderate flooding is forecast. * Forecast...Rise above flood stage by Tuesday morning and continue to rise to near 10.3 feet by early Wednesday morning. * Impact...At 10.0 feet...Moderate flooding of lowlands...structures and roads from Beckwourth to Sloat California...including Portola. Sleepy Pines Motel and other low structures along river in Portola flood. River near foundation of Veterans Hall in Portola. CA Hwy 89 near Clio flooded. && LAT...LON 3988 12071 3983 12038 3981 12039 3972 12058 3985 12072 $$
9 follow-up statements
730 WGUS45 KREV 200104 FLWREV FLOOD WARNING NATIONAL WEATHER SERVICE RENO, NV 504 PM PST SUN FEB 19 2017 ...Forecast flooding changed from Moderate to Major severity for the following rivers in California... Middle Fork Feather River Near Portola affecting Plumas County For the Middle Fork Feather River...including Portola...Major flooding is forecast. A strong atmospheric river will push through the region late Sunday night through early Tuesday bringing heavy rainfall to much of northeast California. The current flood forecast for the Middle Fork of Feather at Portola is higher than what was experienced in January, but about 2 feet lower than the flood earlier this month. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive cars through flooded areas as rushing water can easily sweep a car away... The next forecast update for these locations will be issued at about 9 PM PST Sunday. && CAC063-210704- /O.EXT.KREV.FL.W.0021.170221T1200Z-170224T1200Z/ /MFTC1.3.RS.170221T1200Z.170222T1100Z.170223T1800Z.UU/ 504 PM PST SUN FEB 19 2017 ...Forecast flooding increased from Moderate to Major severity... The Flood Warning continues for The Middle Fork Feather River Near Portola. * from late Monday night to late Thursday night. * At 2:30 PM Sunday the stage was 6.1 feet. * Flood stage is 8.5 feet. * Major flooding is forecast. * Forecast...Rise above flood stage by early Tuesday morning and continue to rise to near 10.7 feet by early Wednesday morning.the river will fall below flood stage by late Thursday morning. * Impact...At 10.5 feet...Major flooding of lowlands... roads...railroads...homes...businesses and structures along river from Beckwourth to Sloat California...including Portola...with significant damage. Sleepy Pines Motel and other low structures along river in Portola flood. Hwy 89 near Clio flooded with water possibly flowing across Hwy 70. && LAT...LON 3988 12071 3983 12038 3981 12039 3972 12058 3985 12072 $$
656 WGUS85 KREV 201102 FLSREV FLOOD STATEMENT NATIONAL WEATHER SERVICE RENO, NV 302 AM PST MON FEB 20 2017 ...The flood warning continues for the following rivers in California... Middle Fork Feather River Near Portola affecting Plumas County A strong atmospheric river will push through the region today through early Tuesday bringing heavy rainfall to much of northeast California. The current flood forecast for the Middle Fork Feather at Portola is higher than what was experienced in January, but about 2 feet lower than the flood earlier this month. PRECAUTIONARY/PREPAREDNESS ACTIONS... These river forecasts are based on forecast rainfall and temperature conditions at time of issuance. If actual conditions vary from these forecasts...river conditions will vary accordingly. Do not drive cars through flooded areas as rushing water can easily sweep a car away. The next forecast update for this locations will be issued at about 9 AM PST Monday. && CAC063-211702- /O.EXT.KREV.FL.W.0021.170221T1400Z-170224T1400Z/ /MFTC1.3.RS.170221T1400Z.170222T1100Z.170223T2000Z.UU/ 302 AM PST MON FEB 20 2017 The Flood Warning continues for The Middle Fork Feather River Near Portola. * from Tuesday morning to Friday morning. * At 2:30 AM Monday the stage was 6.0 feet. * Flood stage is 8.5 feet. * Major flooding is forecast. * Forecast...Rise above flood stage by Tuesday morning and continue to rise to near 10.9 feet by early Wednesday morning. The river will fall below flood stage by early Thursday afternoon. * Impact...Major flooding from Beckwourth to Sloat. Homes, businesses, structures, and roads may experience significant flooding. Sleepy Pines Motel and other structures along the river in Portola may flood. Highway 89 near Clio flooded. Flooding of portions of Highway 70 are also possible. * Flood history...This crest is about 0.7 feet higher than the crest of January 10, 2017, but 1.7 feet lower than the crest of February 11, 2017. && LAT...LON 3988 12071 3983 12038 3981 12039 3972 12058 3985 12072 $$
257 WGUS85 KREV 202253 FLSREV FLOOD STATEMENT NATIONAL WEATHER SERVICE RENO, NV 253 PM PST MON FEB 20 2017 ...The flood warning continues for the following rivers in California... Middle Fork Feather River Near Portola affecting Plumas County Heavy rain and snow will continue across Plumas County this evening and tonight. Snow levels have remained below 6500 feet most of today which may prevent the Middle Fork of the Feather River from reaching major flood stage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Follow the directions of emergency officials. Do not drive cars through flooded areas as rushing water can easily sweep a car away. This product will be updated by 10 am Tuesday. && CAC063-220453- /O.EXT.KREV.FL.W.0021.170221T1500Z-170224T0900Z/ /MFTC1.2.RS.170221T1500Z.170222T1200Z.170223T1500Z.UU/ 253 PM PST MON FEB 20 2017 The Flood Warning continues for The Middle Fork Feather River Near Portola. * from Tuesday morning to late Thursday night. * At 2:30 PM Monday the stage was 6.4 feet. * Flood stage is 8.5 feet. * Moderate flooding is forecast. * Forecast...Rise above flood stage early Tuesday morning and crest near 10.5 feet by early Wednesday morning. The river is forecast to fall below flood stage Thursday morning. * Impact...At 10.5 feet...Significant flooding of lowlands, roads, railroads, homes and businesses along river from Beckwourth to Sloat, including Portola. Highway 89 in Clio may be closed for a day or two. && LAT...LON 3988 12071 3983 12038 3981 12039 3972 12058 3985 12072 $$
568 WGUS85 KREV 211244 FLSREV FLOOD STATEMENT NATIONAL WEATHER SERVICE RENO, NV 444 AM PST TUE FEB 21 2017 ...The Flood Warning continues for the following rivers in California... Middle Fork Feather River Near Portola affecting Plumas County Showers will persist across Plumas County today with snow levels gradually lowering. These lowering snow levels may prevent the Middle Fork of the Feather River from reaching major flood stage. PRECAUTIONARY/PREPAREDNESS ACTIONS... These river forecasts are based on forecast rainfall and temperature conditions at time of issuance. If actual conditions vary from these forecasts...river conditions will vary accordingly. River forecasts include current and planned reservoir releases. The next forecast update for these locations will be issued at about 9 AM Tuesday. && CAC063-221844- /O.EXT.KREV.FL.W.0021.170221T1700Z-170224T0900Z/ /MFTC1.2.RS.170221T1700Z.170222T1200Z.170223T1500Z.UU/ 444 AM PST TUE FEB 21 2017 The Flood Warning continues for The Middle Fork Feather River Near Portola. * from this morning to late Thursday night. * At 3:30 AM Tuesday the stage was 7.2 feet. * Flood stage is 8.5 feet. * Moderate flooding is forecast. * Forecast...Rise above flood stage by late Tuesday morning and continue to rise to near 10.4 feet by early Wednesday morning. The river will fall below flood stage by Thursday morning. * Impact...At 10.0 feet...Moderate flooding of lowlands, structures and roads from Beckwourth to Sloat, including Portola. Highway 89 near Clio may be closed for a day or two. * Flood history...This crest compares to a previous crest of 10.2 feet on January 10 2017. && LAT...LON 3988 12071 3983 12038 3981 12039 3972 12058 3985 12072 $$
742 WGUS85 KREV 212241 FLSREV FLOOD STATEMENT NATIONAL WEATHER SERVICE RENO, NV 241 PM PST TUE FEB 21 2017 ...The flood warning continues for the following rivers in California... Middle Fork Feather River Near Portola affecting Plumas County Flood waters will rise tonight then should begin to slowly recede sometime Wednesday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Never drive through flooded areas. Follow the directions of emergency officials. This product will be updated by 9 am Wednesday. && CAC063-230441- /O.EXT.KREV.FL.W.0021.000000T0000Z-170224T1200Z/ /MFTC1.2.RS.170221T1757Z.170222T1100Z.170223T1800Z.NO/ 241 PM PST TUE FEB 21 2017 The Flood Warning continues for The Middle Fork Feather River Near Portola. * until late Thursday night. * At 1:30 PM Tuesday the stage was 9.3 feet. * Flood stage is 8.5 feet. * Minor to moderate flooding will occur through Thursday morning. The river may briefly reach major flood stage Wednesday morning. * Forecast...The river will crest near 10.5 feet Wednesday morning, then fall below flood stage Thursday morning. * Impact...At 10.5 feet...Significant flooding of lowlands, roads, railroads, homes and businesses along river from Beckwourth to Sloat, including Portola. Highway 89 in Clio may be covered by water tonight and Wednesday. * Flood history...This crest compares to a previous crest of 10.2 feet on January 10 2017. && LAT...LON 3988 12071 3983 12038 3981 12039 3972 12058 3985 12072 $$
753 WGUS85 KREV 221151 FLSREV FLOOD STATEMENT NATIONAL WEATHER SERVICE RENO, NV 351 AM PST WED FEB 22 2017 ...The flood warning continues for the following rivers in California... Middle Fork Feather River Near Portola affecting Plumas County Run off from recent rain and snow melt will continue flooding throughout the reach of the Middle Fork Feather River through at least Thursday. PRECAUTIONARY/PREPAREDNESS ACTIONS... These river forecasts are based on forecast rainfall and temperature conditions at time of issuance. If actual conditions vary from these forecasts...river conditions will vary accordingly. River forecasts include current and planned reservoir releases. The next forecast update for these locations will be issued at about 9 AM Wednesday. && CAC063-231751- /O.EXT.KREV.FL.W.0021.000000T0000Z-170224T1000Z/ /MFTC1.2.RS.170221T1757Z.170222T1200Z.170223T1600Z.NO/ 351 AM PST WED FEB 22 2017 The Flood Warning continues for The Middle Fork Feather River Near Portola. * until late Thursday night. * At 3:30 AM Wednesday the stage was 10.3 feet. * Flood stage is 8.5 feet. * Moderate flooding will continue today with decreasing flooding by Thursday. * Forecast...The river will continue rising to near 10.4 feet by early this morning. The river will fall below flood stage Thursday morning. * Impact...At 10.5 feet...Significant flooding of lowlands, roads, railroads, homes and businesses along river from Beckwourth to Sloat, including Portola. Highway 89 in Clio may be covered by water through early Thursday. * Flood history...This crest compares to a previous crest of 10.2 feet on January 10, 2017. && LAT...LON 3988 12071 3983 12038 3981 12039 3972 12058 3985 12072 $$
960 WGUS85 KREV 230701 FLSREV FLOOD STATEMENT NATIONAL WEATHER SERVICE RENO, NV 1101 PM PST WED FEB 22 2017 ...The Flood Warning continues for the following rivers in California... Middle Fork Feather River Near Portola affecting Plumas County Run off from recent rain and snow melt will continue to decrease in the Feather River basin, but flooding will continue throughout the reach of the Middle Fork Feather River through at least late Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... These river forecasts are based on forecast rainfall and temperature conditions at time of issuance. If actual conditions vary from these forecasts...river conditions will vary accordingly. River forecasts include current and planned reservoir releases. The next forecast update for these locations will be issued at about 9 AM Thursday. && CAC063-240900- /O.EXT.KREV.FL.W.0021.000000T0000Z-170224T0900Z/ /MFTC1.2.RS.170221T1757Z.170222T1030Z.170223T1500Z.NO/ 1101 PM PST WED FEB 22 2017 The Flood Warning continues for The Middle Fork Feather River Near Portola. * until late Thursday night. * At 10:30 PM Wednesday the stage was 9.3 feet. * Flood stage is 8.5 feet. * Minor flooding is forecast to continue through Thursday morning. * Forecast...The river will continue to fall to below flood stage by Thursday morning. * Impact...At 9.5 feet...Moderate flooding of lowlands...roads and low-lying structures from Beckwourth to Sloat, including Portola. Highway 89 near Clio may experience on the roadway through early Thursday morning. && LAT...LON 3988 12071 3983 12038 3981 12039 3972 12058 3985 12072 $$
499 WGUS85 KREV 231722 FLSREV FLOOD STATEMENT NATIONAL WEATHER SERVICE RENO, NV 922 AM PST THU FEB 23 2017 ...The flood warning continues for the following rivers in California... Middle Fork Feather River Near Portola affecting Plumas County Run off from recent rain and snow melt will continue to decrease in the Feather River basin, but minor lowland flooding will continue throughout the reach of the Middle Fork Feather River through Thursday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... These river forecasts are based on forecast rainfall and temperature conditions at time of issuance. If actual conditions vary from these forecasts...river conditions will vary accordingly. River forecasts include current and planned reservoir releases. The next forecast update for these locations will be issued by 9 AM Friday. && CAC063-241300- /O.EXT.KREV.FL.W.0021.000000T0000Z-170224T1300Z/ /MFTC1.2.RS.170221T1757Z.170222T1030Z.170223T1900Z.NO/ 922 AM PST THU FEB 23 2017 The Flood Warning continues for The Middle Fork Feather River Near Portola. * until late tonight. * At 8:30 AM Thursday the stage was 8.7 feet. * Flood stage is 8.5 feet. * Minor flooding is occurring. * Forecast...The river will continue to fall to below flood stage by late Thursday morning. * Impact...some minor lowland flooding in reach between Beckwourth and Sloat California...including Portola. && LAT...LON 3988 12071 3983 12038 3981 12039 3972 12058 3985 12072 $$
105
WGUS85 KREV 240001
FLSREV
FLOOD STATEMENT
NATIONAL WEATHER SERVICE RENO, NV
401 PM PST THU FEB 23 2017
...The flood warning is cancelled for the following rivers in
California...
Middle Fork Feather River Near Portola affecting Plumas County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Although water levels will recede, some very minor flooding in the
Sierra Valley and downstream from Portola is still possible.
&&
CAC063-240031-
/O.CAN.KREV.FL.W.0021.000000T0000Z-170224T1300Z/
/MFTC1.2.RS.170221T1757Z.170222T1030Z.170223T2045Z.NO/
401 PM PST THU FEB 23 2017
The Flood Warning is cancelled for
The Middle Fork Feather River Near Portola.
* At 3:30 PM Thursday the stage was 8.4 feet.
* Flood stage is 8.5 feet.
* Fell below flood stage at 12:45 PM Thursday.
* Forecast...The river will continue to fall to 7.7 feet by early
Friday morning.
* Impact...some very minor lowland flooding in Sierra Valley and
downstream from Portola.
&&
LAT...LON 3988 12071 3983 12038 3981 12039 3972 12058 3985 12072
$$The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 19, 2:59 PM PST | Wind Advisory | REV | Modoc | 48 hr |
Nearby
River Flood Warnings in California, 2017Every river flood warning in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.