Alert archive / Louisiana / Flash Flood Warnings in 2026

Flash Flood Warning 59, NWS New Orleans, LA

June 15, 2026Saint Tammany Parish, Louisiana

NWS New Orleans, LA issued this flash flood warning at Jun 15, 2026, 3:20 AM CDT for Saint Tammany Parish, Louisiana. 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 counties it named.

The facts

Issued
Jun 15, 2026, 3:20 AM CDT (08:20 UTC)
Expired
Jun 15, 2026, 6:00 AM CDT
In force
3 hr
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Flood severity
None

County Saint Tammany Parish, LA

The radar

The Hammond radar (KHDC), 45 km from the middle of the area, began a volume at 08:22 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

Lake Charles Mun, LA (KLCH), launched 00:00Z, 8.3 hours before the alert went out and 313 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.

Skew-T log-pSkew-T log-p diagram, Lake Charles Mun, LA at 00:00Z on 2026-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1692 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 00:00Z on 2026-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1692 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
839 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
40 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 New Orleans, LA wrote its last area forecast discussion before this flash flood warning went out at Jun 15, 1:45 AM CDT, 1 hour 35 minutes earlier.

Area forecast discussion, Jun 15, 1:45 AM CDT, 1 hour 35 minutes before
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The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 14, 8:27 PM CDTFlood WatchLIXAscension, Assumption, East Baton Rouge, East Feliciana, Iberville, Jefferson and 16 more4 days
Jun 15, 2:55 AM CDTAreal Flood AdvisoryLIXSaint Tammany3 hr
Jun 15, 4:23 AM CDTAreal Flood AdvisoryLIXEast Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee, West Baton Rouge and 1 more2 hr
Jun 15, 1:46 PM CDTSpecial Marine WarningLIX59 min
Jun 15, 2:20 PM CDTSpecial Weather StatementLIXOrleans25 min
Jun 15, 2:45 PM CDTSpecial Marine WarningLIX60 min
Jun 15, 3:33 PM CDTSpecial Marine WarningLIX57 min
Jun 15, 3:36 PM CDTSpecial Weather StatementLIXTangipahoa24 min
Jun 15, 3:54 PM CDTSpecial Weather StatementLIXSaint Helena51 min
Jun 15, 4:20 PM CDTAreal Flood AdvisoryLIXSaint Tammany115 min
Jun 15, 4:41 PM CDTSpecial Weather StatementLIXWashington34 min
Jun 15, 5:07 PM CDTSpecial Weather StatementLIXTangipahoa38 min
Jun 15, 5:13 PM CDTSpecial Weather StatementLIXWashington32 min
Jun 15, 3:07 AM CDTFlash Flood WarningLIXHancock3 hr
Jun 15, 7:01 AM CDTAreal Flood AdvisoryLIXHarrison, Jackson119 min
Jun 15, 7:12 AM CDTFlash Flood WarningLIXHarrison, Jackson3 hr
Jun 15, 2:58 PM CDTSpecial Weather StatementLIXPearl River47 min
Jun 15, 3:35 PM CDTSpecial Weather StatementLIXHarrison40 min
Jun 15, 4:15 PM CDTSpecial Weather StatementLIXJackson30 min
Jun 15, 4:42 PM CDTSpecial Weather StatementLIXPike33 min
Jun 15, 4:47 PM CDTSpecial Weather StatementLIXJackson28 min
Jun 15, 5:12 PM CDTSpecial Weather StatementLIXPearl River33 min
Jun 15, 5:16 PM CDTSpecial Weather StatementLIXJackson29 min

Nearby

Flash Flood Warnings in Louisiana, 2026Every flash flood warning in 2026

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.