Alert archive / Louisiana / Hurricane Watches in 2012
Hurricane Watch 1009, NWS Lake Charles, LA
NWS Lake Charles, LA issued this hurricane watch at Aug 27, 2012, 4:44 AM CDT for Lafayette Parish, Saint Martin Parish, Louisiana. It was in force for 61 hr.
The area
The counties it named.
The facts
- Issued
- Aug 27, 2012, 4:44 AM CDT (09:44 UTC)
- Expired
- Aug 29, 2012, 5:54 PM CDT
- In force
- 61 hr
- Issued by
- NWS Lake Charles, LA
Counties Lafayette Parish, LA, Saint Martin Parish, LA
The radar
The Lake Charles radar (KLCH), 133 km from the middle of the area, began a volume at 09:50 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
Slidell Radar S, LA (KSIL), launched 00:00Z, 9.7 hours before the alert went out and 205 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.
- Mixed-layer CAPE
- 1114 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1073 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this hurricane 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 hurricane watch went out at Aug 26, 11:23 PM CDT, 5 hours 21 minutes earlier.
Area forecast discussion, Aug 26, 11:23 PM CDT, 5 hours 21 minutes before
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</html>Hazardous weather outlook, Aug 26, 11:34 PM CDT, 5 hours 10 minutes before
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</html>The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 4:44 AM CDT | Tropical Storm Watch | LCH | Allen, Beauregard, Cameron, Evangeline, Rapides, Vernon | 61 hr |
| Aug 27, 4:44 AM CDT | Tropical Storm Warning | LCH | Allen, Avoyelles, Beauregard, Cameron, Evangeline, Lafayette and 4 more | 3 days |
Nearby
Hurricane Watches in Louisiana, 2012Every hurricane watch in 2012
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.