Alert archive / Louisiana / Flash Flood Watches in 2009

Flash Flood Watch 2, NWS Lake Charles, LA

October 26, 20099 parishes in Louisiana; Hardin County, Tyler County, Texas

NWS Lake Charles, LA issued this flash flood watch at Oct 26, 2009, 3:55 AM CDT for 9 parishes in Louisiana; Hardin County, Tyler County, Texas. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: Oct 26, 2009, 3:55 AM CDT (08:55 UTC)
Expired: Oct 26, 2009, 2:49 PM CDT
In force: 11 hr
Issued by: NWS Lake Charles, LA
Flood severity: None

Counties Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Evangeline Parish, LA, Lafayette Parish, LA, Rapides Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, Vernon Parish, LA, Hardin County, TX, Tyler County, TX

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 8.9 hours before the alert went out and 220 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1919 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 171 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 watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lake Charles, LA wrote its last area forecast discussion before this flash flood watch went out at Oct 25, 11:57 PM CDT, 3 hours 58 minutes earlier.

Area forecast discussion, Oct 25, 11:57 PM CDT, 3 hours 58 minutes before

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Hazardous weather outlook, Oct 25, 5:11 AM CDT, 22 hours 44 minutes before

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In the hours before

Local storm report, Oct 26, 12:12 AM CDT, 3 hours 43 minutes before

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Local storm report, Oct 26, 12:14 AM CDT, 3 hours 41 minutes before

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The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 26, 4:17 AM CDT	Small Craft Advisory	LCH		11 hr
Oct 26, 1:40 PM CDT	Areal Flood Advisory	LCH	Beauregard, Calcasieu	3 hr
Oct 26, 2:49 PM CDT	Flood Watch	LCH	Allen, Avoyelles, Beauregard, Evangeline, Lafayette, Rapides and 3 more	13 hr
Oct 26, 3:06 PM CDT	Areal Flood Advisory	LCH	Calcasieu	3 hr
Oct 26, 4:00 PM CDT	Flash Flood Warning	LCH	Calcasieu	3 hr
Oct 26, 5:17 PM CDT	Areal Flood Advisory	LCH	Calcasieu, Jefferson Davis	3 hr
Oct 26, 5:19 PM CDT	Areal Flood Advisory	LCH	Calcasieu, Cameron	3 hr
Oct 26, 6:56 PM CDT	Flash Flood Warning	LCH	Calcasieu	3 hr
Oct 26, 8:57 AM CDT	Areal Flood Advisory	LCH	Tyler	3 hr
Oct 26, 10:53 AM CDT	Areal Flood Advisory	LCH	Hardin, Jefferson, Orange	3 hr
Oct 26, 12:10 PM CDT	Flash Flood Warning	LCH	Tyler	3 hr
Oct 26, 12:40 PM CDT	Flash Flood Warning	LCH	Jefferson, Orange	2 hr

Nearby

Flash Flood Watches in Louisiana, 2009 Flash Flood Watches in Texas, 2009 Every flash flood watch in 2009

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.