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1/20/2024
WT Staff
HAPPENING NOW
NWS: Hard freeze again tonight
Southwest severe drought
Water news for Saturday, January 20, 2024 - last updated 1025 am CST
National Weather Service Urgent Weather Message issued 347 am CST Jan 20
Impacting Pointe Coupee-West Feliciana-East Feliciana-St. Helena-Washington-Iberville-West Baton Rouge-East Baton Rouge-Northern Tangipahoa-Southeast St. Tammany-Northern St. Tammany-Southwestern St. Tammany-Central Tangipahoa-Lower Tangipahoa-Northern Livingston-Southern Livingston-Western Ascension-Eastern Ascension Parishes
HARD FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CST SUNDAY...Sub-freezing temperatures as low as 22 expected in portions of southeast Louisiana and southern Mississippi. Frost and freeze conditions will kill crops, other
sensitive vegetation and possibly damage unprotected outdoor plumbing.
Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.
Drinking Water Matters
Water facilities statewide are impacted by low water pressure resulting from connections left open to drip to avoid bursting pipes from the hard freeze. With another hard freeze expected tonight, the strain on water facilities is high. Drinking water supplies continue to be impacted, more to follow.
See yellow tags on the map for BWAs.
Streamflow Situation from USGS real time streamflow monitoring stations around the eight watersheds of the state
Below normal flows statewide Saturday have led to the seven day average falling severely below seasonal normal in Regions 4 and 5, see the drought section for more.
Friday morning there are six monitoring stations recording extreme low levels.
Drought Map from USGS 7-day average streamflows compared to historic averages
Regions 4 and 5 have jumped to a severe drought rating overnight, with Acadia and Evangeline Parishes in Region 5 trailing at moderate drought. Tangipahoa Parish has stepped right up to moderate drought after a single day back on the drought map at below normal yesterday. The streamflow monitor at Robert is back at an extreme low level again today as observed on Thursday. One day of reprieve yesterday was not enough positive flow volume to forestall the higher drought rating for the Parish we see this morning.
In the northwest, Regions 1, 2 and 3 have all been marked with an area of moderate hydrologic drought Saturday. Caddo Parish in Region 1, Grant and LaSalle Parishes in Region 2 and the Tensas River channel in Region 3 are moderate drought rated as of this update.
Watershed regions 6 and 8 continue to avoid a drought rating as all of LA braces for another hard freeze tonight.
See the Flood button to the right of the map for more information on streamflows. Red-brown tags on the map refer to extreme low flows.
Note WaterToday reports day-to-day changes recorded by USGS streamflow monitors on rivers and tributaries located in Louisiana, along with monitors upstream in the Mississippi River basin: Ohio, Georgia and southwest New York state. USGS creates a drought map from 7-day average streamflow readings, by comparing the average with the historic weekly normal flow value for each location. The drought ratings are below normal, moderate hydrologic drought, severe drought and extreme drought.
USGS Provisional Data Statement
Data are provisional and subject to revision until they have been thoroughly reviewed and received final approval. Current condition data relayed by satellite or other telemetry are automatically screened to not display improbable values until they can be verified.
Provisional data may be inaccurate due to instrument malfunctions or physical changes at the measurement site. Subsequent review based on field inspections and measurements may result in significant revisions to the data.
Data users are cautioned to consider carefully the provisional nature of the information before using it for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Information concerning the accuracy and appropriate uses of these data or concerning other hydrologic data may be obtained from the USGS.
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