Alert archive / Arkansas / Special Weather Statements in 2016

Special Weather Statement, NWS Shreveport, LA

August 7, 2016Columbia County, Union County, Arkansas

NWS Shreveport, LA issued this special weather statement at Aug 7, 2016, 7:21 PM CDT for Columbia County, Union County, Arkansas. It was in force for 39 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: Aug 7, 2016, 7:21 PM CDT (00:21 UTC)
Expired: Aug 7, 2016, 8:00 PM CDT
In force: 39 min
Issued by: NWS Shreveport, LA

Counties Columbia County, AR, Union County, AR

The radar

The Shreveport radar (KSHV), 145 km from the middle of the area, began a volume at 00:23 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

Shreveport, LA (KBAD), launched 00:00Z, 0.4 hours before the alert went out and 137 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: 1494 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 1709 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

779 
WWUS84 KSHV 080021
SPSSHV

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
721 PM CDT SUN AUG 7 2016
 
ARZ060-061-071>073-080100-
UNION AR-NEVADA AR-HEMPSTEAD AR-LAFAYETTE AR-COLUMBIA AR-
721 PM CDT SUN AUG 7 2016

...SIGNIFICANT WEATHER ADVISORY FOR COLUMBIA...EASTERN LAFAYETTE...
SOUTHERN NEVADA...SOUTHEASTERN HEMPSTEAD AND UNION COUNTIES UNTIL 800
PM CDT...

AT 720 PM CDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM OLD MILO TO NEAR BODCAW...
AND MOVING SOUTH AT 30 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
EL DORADO...MAGNOLIA...SMACKOVER...STAMPS...WALDO...NORPHLET...
HUTTIG...JUNCTION CITY...MCNEIL...TAYLOR...STRONG...CALION...
EMERSON...BUCKNER...LOUANN...WILLISVILLE...BODCAW...WESSON...
MACEDONIA AND URBANA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3302 9308 3306 9348 3358 9355 3353 9311
      3338 9312 3339 9276 3336 9266 3337 9259
      3336 9254 3332 9252 3332 9246 3327 9244
      3330 9235 3326 9232 3328 9230 3326 9223
      3316 9217 3316 9211 3309 9213 3301 9207
TIME...MOT...LOC 0020Z 346DEG 27KT 3330 9188 3349 9346 

$$

20

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 3:31 PM CDT	Special Weather Statement	SHV	Red River	44 min
Aug 8, 5:01 PM CDT	Special Weather Statement	SHV	Camp, Franklin, Gregg, Titus, Upshur	59 min
Aug 8, 5:14 PM CDT	Areal Flood Advisory	SHV	Camp, Titus, Upshur	3 hr
Aug 7, 7:18 PM CDT	Special Weather Statement	SHV	Lincoln	57 min
Aug 7, 7:42 PM CDT	Special Weather Statement	SHV	Bossier	48 min
Aug 7, 7:47 PM CDT	Special Weather Statement	SHV	Bossier	43 min
Aug 7, 7:52 PM CDT	Special Weather Statement	SHV	Lincoln	53 min
Aug 7, 8:01 PM CDT	Special Weather Statement	SHV	Grant, Jackson, LaSalle, Winn	59 min
Aug 7, 8:02 PM CDT	Special Weather Statement	SHV	Claiborne, Union	43 min
Aug 7, 8:25 PM CDT	Areal Flood Advisory	SHV	Bienville, Claiborne, Jackson, LaSalle, Lincoln, Winn	3 hr
Aug 7, 8:38 PM CDT	Special Weather Statement	SHV	Bienville, Jackson, Lincoln, Ouachita	52 min
Aug 7, 8:49 PM CDT	Special Weather Statement	SHV	Webster	41 min
Aug 7, 8:59 PM CDT	Areal Flood Advisory	SHV	Bossier, Webster	3 hr
Aug 7, 10:02 PM CDT	Areal Flood Advisory	SHV	Grant, LaSalle, Natchitoches, Winn	3 hr
Aug 7, 10:07 PM CDT	Special Weather Statement	SHV	Grant, LaSalle, Natchitoches, Sabine	38 min

Nearby

Special Weather Statements in Arkansas, 2016 Every special weather statement in 2016

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.