Alert archive / Louisiana / Heat Advisories in 2011
Heat Advisory 4, NWS New Orleans, LA
NWS New Orleans, LA issued this heat advisory at Jun 17, 2011, 1:15 PM CDT for 13 parishes in Louisiana; 5 counties in Mississippi. It was in force for 28 hr.
The area
The counties it named.
The facts
- Issued
- Jun 17, 2011, 1:15 PM CDT (18:15 UTC)
- Expired
- Jun 18, 2011, 5:22 PM CDT
- In force
- 28 hr
- Issued by
- NWS New Orleans, LA
Counties Assumption Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Iberville Parish, LA, Pointe Coupee Parish, LA, Saint Bernard Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Amite County, MS, Pearl River County, MS, Pike County, MS, Walthall County, MS, Wilkinson County, MS
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 6.3 hours before the alert went out and 198 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
- 1623 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 928 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -31 m²/s²
- 0-3 km storm-relative helicity
- 1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
What forecasters said that day
The local office's own words before this heat advisory 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 heat advisory went out at Jun 16, 3:48 PM CDT, 21 hours 27 minutes earlier.
Area forecast discussion, Jun 16, 3:48 PM CDT, 21 hours 27 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NEW ORLEANS LA 348 PM CDT THU JUN 16 2011 .SHORT TERM... HAVE A FEW SHOWERS AND STORMS ON THE RADAR SCOPE THIS AFTERNOON SO IT LOOKS LIKE UPDATE TO ADD POPS TO THE FORECAST WAS MERITED. MESO MODELS INDICATE THAT CONVECTION OVER SOUTHERN AL/MS WILL TRANSLATE INTO EASTERN PORTIONS OF THE CWA ALONG AND NORTH OF I-12 FROM AROUND HAMMOND EASTWARD TO THE MS COAST. IF STORMS DO MAKE IT INTO THE CWA THEY WILL LIKELY BE ON THE DOWNWARD TREND. COULD STILL HAVE GUSTY DOWNDRAFTS AS STORMS COLLAPSE. BEYOND SUNSET WHEN MOST ACTIVITY WANES...WILL BE ANOTHER WARM AND MUGGY NIGHT AS USUAL. .LONG TERM... NICE TO FINALLY BE TALKING ABOUT RAIN POSSIBLY IN THE EXTENDED FORECAST. UNFORTUNATELY...STILL HAVE TO GO THROUGH QUITE A FEW DAYS TO GET THERE. NOT THAT THERE/S BEEN MUCH LATELY BUT RAIN SHOULD BE SHUT OFF FOR THE MOST PART THIS WEEKEND. HIGHS TO REMAIN IN THE MID 90S WITH STEADY HEAT INDICIES 100 TO 105. MODELS REMAIN CONSISTENT IN SHOWING THE RIDGE MOVING WELL EAST OF THE AREA BY MIDDLE OF NEXT WEEK WHICH WILL ALLOW FOR STEADY FLOW OF GULF MOISTURE. IT WOULD LIKELY BE CONTINUED RAIN CHANCES. MEFFER && .AVIATION... VFR CONDITIONS TO PREVAIL AT MOST LOCATIONS. THE MISSISSIPPI COASTAL TERMINALS...KGPT...KHSA...KPQL WILL HAVE TO BE MONITORED FOR CONVECTION AND WILL INCLUDE TEMPO GROUPS FOR THIS AFTERNOON THOSE LOCATIONS. 24/RR && .MARINE... VERY STAGNANT PATTERN ACROSS THE COASTAL WATERS TODAY INTO EARLY NEXT WEEK AS SURFACE RIDGE OVER THE EAST CENTRAL GULF WILL GRADUALLY SHIFT EASTWARD OVER THE NEXT FEW DAYS BUT CONTINUE TO EXTEND WELL OVER THE AREA. THIS WILL KEEP WINDS GENERALLY SW IN THE 5 TO 10 KT RANGE WITH TYPICAL INCREASE FROM EARLY THRU MID MORNING. ONLY VERY ISOLATED SHOWERS OFFSHORE. THROUGH TIME...UPPER LEVEL RIDGE WILL TRACK EASTWARD ACROSS THE AREA. THIS WILL CAUSE WINDS TO BECOME MORE SOUTHEASTERLY BY MID WEEK. AT THE SAME TIME...SHOWER AND THUNDERSTORM ACTIVITY SHOULD BECOME MORE PREVALENT. MEFFER && .PRELIMINARY POINT TEMPS/POPS... MCB 75 95 75 96 / 20 10 10 10 BTR 76 96 76 95 / 20 10 10 10 ASD 76 95 76 94 / 20 10 10 10 MSY 78 93 77 92 / 20 10 10 10 GPT 76 94 77 93 / 20 10 10 10 PQL 76 93 76 93 / 20 10 10 10 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...NONE. GM...NONE. MS...NONE. GM...NONE. &&
Nearby
Heat Advisories in Louisiana, 2011Heat Advisories in Mississippi, 2011Every heat advisory in 2011
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.