Alert archive / Louisiana / Special Weather Statements in 2017
Special Weather Statement, NWS Shreveport, LA
NWS Shreveport, LA issued this special weather statement at Mar 27, 2017, 9:22 PM CDT for Caldwell Parish, Louisiana. It was in force for 68 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Mar 27, 2017, 9:22 PM CDT (02:22 UTC)
- Expired
- Mar 27, 2017, 10:30 PM CDT
- In force
- 68 min
- Issued by
- NWS Shreveport, LA
County Caldwell Parish, LA
The radar
The Ft Polk radar (KPOE), 133 km from the middle of the area, began a volume at 02:22 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
Jackson, MS (KJAN), launched 00:00Z, 2.4 hours before the alert went out and 183 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
- 1116 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 771 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 159 m²/s²
- 0-3 km storm-relative helicity
- 209 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 6.2
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Shreveport, LA wrote its last area forecast discussion before this special weather statement went out at Mar 27, 7:51 PM CDT, 1 hour 31 minutes earlier.
Area forecast discussion, Mar 27, 7:51 PM CDT, 1 hour 31 minutes before
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</html>Hazardous weather outlook, Mar 27, 11:52 AM CDT, 9 hours 30 minutes before
Hazardous Weather Outlook National Weather Service Shreveport LA 1152 AM CDT Mon Mar 27 2017 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-281700- Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette- Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto- Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn- Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp- Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk- Panola-Nacogdoches-Shelby-Angelina-San Augustine- 1152 AM CDT Mon Mar 27 2017 This Hazardous Weather Outlook is for portions of south central Arkansas...southwest Arkansas...north central Louisiana... northwest Louisiana...southeast Oklahoma...east Texas and northeast Texas. .DAY ONE...This Afternoon and Tonight... Isolated to scattered showers and thunderstorms will be possible this afternoon ahead of a cold front that will slowly push southeast across the region. Convection should be limited to Southwest Arkansas, North Louisiana, and Deep East Texas. However, no hazardous weather is expected. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday... Showers and thunderstorms to increase in intensity on Wednesday afternoon and evening ahead of an upper-level storm system. Severe thunderstorms possible as convection spreads east across the region. Damaging winds, isolated tornadoes, hail, and locally heavy rainfall will be possible, with the severe weather threat diminishing from west to east late Wednesday night. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel...amateur radio operators...and storm spotters will not be needed through tonight. 05
In the hours before
Special weather statement, Mar 27, 4:38 PM CDT, 4 hours 44 minutes before
Special Weather Statement National Weather Service Shreveport LA 438 PM CDT MON MAR 27 2017 LAZ019>022-272230- Caldwell-Winn-La Salle-Grant- 438 PM CDT MON MAR 27 2017 ...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN GRANT...SOUTH CENTRAL CALDWELL...LA SALLE AND SOUTHEASTERN WINN PARISHES... At 436 PM CDT, a strong thunderstorm was located 15 miles southeast of Winnfield, moving northeast at 20 mph. Hail to one half inch diameter possible with this storms, and other storms developing in the Jena and Olla areas. Locations impacted include... Jena, Olla, Midway, Urania, Tullos, Georgetown, Spaulding, Zenoria, Burlington, Standard, Rochelle and Kelly. LAT...LON 3161 9251 3177 9262 3207 9201 3158 9201 TIME...MOT...LOC 2136Z 240DEG 16KT 3173 9250 VII
Special weather statement, Mar 27, 5:43 PM CDT, 3 hours 39 minutes before
Special Weather Statement
National Weather Service Shreveport LA
543 PM CDT MON MAR 27 2017
LAZ013-019-272345-
Winn-Jackson-
543 PM CDT MON MAR 27 2017
...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN JACKSON AND
NORTHEASTERN WINN PARISHES...
At 542 PM CDT, a strong thunderstorm was located near Winnfield,
moving northeast at 20 mph.
Winds in excess of 30 mph and half inch hail are possible with this
storm.
Locations impacted include...
Winnfield, Dodson, Sikes, Joyce and Hudson.
LAT...LON 3187 9262 3204 9281 3233 9234 3229 9231
3203 9231
TIME...MOT...LOC 2242Z 233DEG 18KT 3199 9262
viiSpecial weather statement, Mar 27, 8:07 PM CDT, 1 hour 15 minutes before
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</html>The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 3:49 PM CDT | Lake Wind Advisory | SHV | Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more | 27 hr |
| Mar 27, 8:07 PM CDT | Special Weather Statement | SHV | Caldwell | 23 min |
Nearby
Special Weather Statements in Louisiana, 2017Every special weather statement in 2017
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.