Tag Archives: National Weather Service

Hurricane Idalia landing in Florida, more Georgia counties on Hurricane Watch 2023-08-30

Cedar Key is getting high winds from Hurricane Idalia, and Steinhatchee’s weather camera is offline, while the National Weather Service has added more Georgia counties to its Hurricane Watch; all Florida Suwannee River Basin Counties were already in Hurricane Watch.

If you’re in Florida, hunker down. If you’re in Georgia, you may have time for some last-minute preparations. Either way, most schools and businesses are closed today in the Hurricane Watch counties, so there’s not much need to go out in the rain and wind.

Also, don’t buy water in plastic bottles. Fill pots, jugs, buckets, and bathtubs with tap or well water.

Watch your local county or city Emergency Management Agency. Have your power utility outage number handy.

Dear central and south Florida urban sophisticates: we know you’re used to this. In the rural Suwannee River Basin a Category 3 hurricane is unusual, especially one making landfall where it is, and likely to stay a hurricane so far inland.

Also, many of us remember Hurricane Michael, which only five years ago devastated the Florida Big Bend and trashed Albany, Georgia, on a path only a bit farther west than Hurricane Idalia. So this is not a joke to those of us who live here.

Better safe than sorry.

[Hurricane Watch in more Georgia Counties, High winds at Cedar Key, Hurricane Idalia, 2023-08-30 06:00]
Hurricane Watch in more Georgia Counties, High winds at Cedar Key, Hurricane Idalia, 2023-08-30 06:00

Since our last post, NWS JAX has added to the Hurricane Watch Suwannee River Basin Georgia counties Thomas, Cook, Berrien, Atkinson, and Coffee, along with more counties northeastward, Jeff Davis, Bacon, Pierce, Brantley, Apppling, Appling, Wayne, Tatnall, Long, Evans, and along the coast McIntosh, Liberty, Bryan, and Chatham Counties. All the Florida Suwannee River Basin Counties were already on Hurricane Watch.

All the nearby Georgia and Florida counties are on Tropical Storm Warning, as far west as Albany in Dougherty County. Continue reading

Hurricane Idalia heading for Suwannee River Basin 2023-08-29

Update 2023-08-29: Georgia declares State of Emergency for Hurricane Idalia 2023-08-29.

Hurricane Idalia is now Category 1 and is headed a bit farther west, taking it straight up the Suwannee River Basin.

[Hurricane Idalia probable path cone and collapsed road]
Hurricane Idalia probable path cone and collapsed road

Cat 1 means sustained winds of at least 74 mph, up to 95 mph. Inland it will probably rapidly degrade to a Tropical Storm. That still means 39-73 mph winds.

Before landfall, Hurricane Idalia may strengthen to cat 2 (96-110 mph with extensive damage) or cat 3 (111-129 mph with devastating damage).

I’m going out and securing anything that might turn into a projectile, even though I’m about a hundred miles from the Gulf Coast.

For those who are tired of being warned: this is a hurricane. It’s much better to be prepared than sorry.

I drove up from Gainesville yesterday, and there were already rain gusts strong enough to buffet my car and to cause everyone on I-75 to slow to 45 MPH. When the wind gets up to 50 MPH, you don’t want to be driving, even if you don’t run into flooding or bridges out. At 74 MPH, you want to be inside something solid. Continue reading

River Low, Action, and Flood Stages 2023-02-16

“What does “action stage” mean?” asked Christy Yates on facebook about Paddling in the treetops 2023-02-13 and for real two years ago 2021-02-27 2023-02-13.

This is relevant to the upcoming Fourth Annual Mayor and Chairman’s Paddle, Withlacoochee River 2023-03-04.

I answered: Basically, watch out, the river is high. More formally: “Action Stage – the stage which, when reached by a rising stream, represents the level where the NWS or a partner/user needs to take some type of mitigation action in preparation for possible significant hydrologic activity. The type of action taken varies for each gage location. Gage data should be closely monitored by any affected people if the stage is above action stage.

[Stages, US 84 Gauge, Treetop paddling]
Stages, US 84 Gauge, Treetop paddling

See below for National Weather Service (NWS) terminology, which also defines several stages of flooding: minor, moderate, and major. That definitions web page is from Alaska, and it includes something called “bankfull stage” that I’ve never seen used around here. The rest of it is the same as in the Suwannee River Basin.

Right now paddling the Withlacooche River would be up in the branches like this picture, but higher. Don’t worry: the water level will probably go back down before March 4th. Continue reading

Raining now, sending Valdosta sewage downstream; Florida warns; Valdosta does what? 2019-12-22

Update 2019-12-23: E. coli at Little River Confluence, Spook Bridge, and Knights Ferry, Withlacoochee River 2019-12-21

The National Weather Service predicts rain coming down now will raise the Withlacoochee River from Low to Action stages above Valdosta starting today. This is after WWALS already apparently detected Valdosta sewage passing GA 133 on Tuesday, continuing Thursday, so Valdosta’s record-largest sewage spill is likely headed downstream. Florida has put out alerts, allocated funds for testing, and at least one county has declared a state of emergency. When will Valdosta even post signs downstream to the state line? When will Valdosta reimburse the downstream Florida Counties and health departments for their expenses?

[Skipper Bridge Gauge, Withlacoochee, above Valdosta, 2019-12-22, 7:30 AM]
Skipper Bridge Gauge, Withlacoochee, above Valdosta, 2019-12-22, 7:30 AM
water.weather.gov, with predicted water levels.

There’s a lot of concern downstream in Florida. Hamilton County put warning signs at all its boat ramps and Florida Parks put one at Madison Blue Spring. Those signs were still in place when I looked Monday afternoon, December 16, 2019.

[Florida Health Advisory on kiosk]
Florida Health Advisory on kiosk at Florida Campsites, upstream from Madison Blue Spring, 2019-12-16.

But Valdosta has only posted warning signs at a few places within its own city limits and at Troupville Boat Ramp, with no signs at US 84, Knights Ferry Boat Ramp, Nankin Boat Ramp, or State Line Boat Ramp. Continue reading

Video: River Gauges @ Lowndes County Commission 2019-10-21

Flood Inundation Maps (FIM) are related to Lowndes County taking over funding from Valdosta of the Skipper Bridge Withlacoochee River gauge, said EMA Director Ashley Tye.

[19.7feet]
19.7feet

Joint funding of $135,000 from Valdosta and Lowndes County started work on FIM for Skipper Bridge in 2016, with completion announced 22 May 2018.

The item about joint funding with USGS and SRWMD to fund the Skipper Bridge Withlacoochee River Gauge, in addition to the Folsom Bridge Little River Gauge, was the longest item at five minutes yesterday morning. Continue reading

Lowndes County takes over Skipper Bridge Withlacoochee River Gauges with help from SRWMD 2019-10-21

Funding is shifting from Valdosta to Lowndes County for the Skipper Bridge Road Withlacoochee River gauge, adding to the county’s traditional since 2009 funding of the Folsom Bridge GA 122 Little River gauge. That’s $8,300 and $14,200, respectively, with another $5,900 for the Skipper Bridge Gauge from the Suwannee River Water Management District (SRWMD). The U.S. Geological Survey (USGS) puts in $900 towards each gauge, or $1800 total. SRWMD and USGS previously assisted Valdosta in funding the Skipper Bridge Road gauge.

Skipper Bridge Road Withlacoochee River Gauge NWS graph

This change will be discussed this morning at 8:30 AM and voted on at 5:30 PM Tuesday, October 22, 2019, by the Lowndes County Commission. The reason for this change is: Continue reading

Sea level gage reports: all USGS gages in WWALS territory in Georgia

All the Suwannee River Basin USGS gages in Georgia just got a new flood level reporting system (except they missed one). Locator Map: Central South Georgia USGS Gages They’ve added a level measurement from sea level, probably not coincidentally about the same as the Florida gages added a level measurement from dry riverbed, so both Georgia and Florida gages now have both measurements. This actually does not affect the WWALS level charts for the Withlacoochee and Little River Water Trail nor for the Alapaha River Water Trail, because those continue to display water levels from dry riverbed. To see this change at all, you have to drill down to the USGS detail pages, for example on the Withlacoochee River at Skipper Bridge Road in Georgia, or near Pinetta, Florida.

National Weather Service Weather Forecast Office, Tallahassee, FL, unknown date, Suwannee River Basin Datum Changes in South Central Georgia,

Starting on October 14, 2015, the National Weather Service in Tallahassee and Jacksonville will make adjustments to the reporting method for water level in the Suwannee River System. This includes river gages in the following rivers or creeks: Continue reading

Spring Flood Potential Outlook for Withlacoochee River by NWS

There is potential for “a high impact basin-wide flood event this spring should heavier than normal rainfall occur” in the Withlacoochee Basin.

300x233 Vdsg1 Hg Skipper Bridge, in Withlacoochee River Gauges, by NWS, for WWALS.net, 7 March 2015 National Weather Service Tallahasee, FL 240 PM EST THU MAR 5 2015, Spring Flood Potential Outlook for Southeast Alabama, Southwest and South Central Georgia, and the Florida Panhandle and Big Bend,
Above normal potential for river flooding this Spring,
Existing Conditions.

In the Withlacoochee, Suwannee Basin…

Continue reading