Alert archive / Arkansas / Special Weather Statements in 2017

Special Weather Statement, NWS Shreveport, LA

July 2, 2017Sevier County, Arkansas; McCurtain County, Oklahoma

NWS Shreveport, LA issued this special weather statement at Jul 2, 2017, 11:39 PM CDT for Sevier County, Arkansas; McCurtain County, Oklahoma. It was in force for 51 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: Jul 2, 2017, 11:39 PM CDT (04:39 UTC)
Expired: Jul 3, 2017, 12:30 AM CDT
In force: 51 min
Issued by: NWS Shreveport, LA

Counties Sevier County, AR, McCurtain County, OK

The radar

The Western Arkansas radar (KSRX), 139 km from the middle of the area, began a volume at 04:43 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, 4.7 hours before the alert went out and 186 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: 1229 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 1435 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Jul 2, 9:51 PM CDT, 1 hour 48 minutes earlier.

Area forecast discussion, Jul 2, 9:51 PM CDT, 1 hour 48 minutes before

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Hazardous weather outlook, Jul 2, 12:00 PM CDT, 11 hours 39 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Shreveport LA
1200 PM CDT Sun Jul 2 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>167-031700-
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-
1200 PM CDT Sun Jul 2 2017

This Hazardous Weather Outlook is for Southern Arkansas, for
Northern Louisiana, for Eastern Texas and Southeast Oklahoma.

.DAY ONE...This Afternoon and Tonight...

Scattered thunderstorms will be possible and even look to return
this evening north of I-30. Expect some what more isolated
activity down to I-20, especially overnight as another upper
level system moves out of Oklahoma into Arkansas. If thunder
roars, move indoors. Lightning is always dangerous. Winds will be
gusty around any heavy down pours, few as they may be in coverage
this afternoon, but overnight Thunderstorm activity could sport
damaging winds should a bow echo emerge.

.DAYS TWO THROUGH SEVEN...Monday through Saturday...

The first half of the work week is expected to be mostly dry, with
only isolated thunderstorms possible north of I 20. However, scattered
showers and thunderstorms are forecast to return to the region
for Thursday through Saturday, as another slow-moving cold front
settles into the four state area. No hazardous weather is
expected at this time.

.SPOTTER INFORMATION STATEMENT...

Activation of emergency management personnel...amateur radio
operators and storm spotters is not anticipated through tonight.

24

In the hours before

Special weather statement, Jul 2, 10:37 PM CDT, 1 hour 2 minutes before

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Special weather statement, Jul 2, 11:39 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 12:05 AM CDT	Special Weather Statement	SHV	Bowie, Red River	40 min
Jul 3, 1:24 AM CDT	Special Weather Statement	SHV	Red River	66 min
Jul 3, 1:27 AM CDT	Special Weather Statement	SHV	Red River	63 min
Jul 3, 1:42 AM CDT	Special Weather Statement	SHV	Franklin, Titus	48 min
Jul 3, 1:50 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Red River, Titus	40 min
Jul 3, 2:07 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass, Morris, Red River	38 min
Jul 3, 3:20 AM CDT	Areal Flood Advisory	SHV	Red River	3 hr
Jul 3, 4:06 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Franklin, Morris, Red River, Titus	39 min
Jul 3, 4:47 AM CDT	Special Weather Statement	SHV	Franklin, Morris, Titus	43 min
Jul 3, 4:55 AM CDT	Areal Flood Warning	SHV	Red River, Titus	5 hr
Jul 3, 5:38 AM CDT	Special Weather Statement	SHV	Bowie, Cass, Morris	67 min
Jul 3, 8:35 AM CDT	Areal Flood Advisory	SHV	Franklin, Titus	3 hr
Jul 3, 12:48 AM CDT	Special Weather Statement	SHV	Howard, Little River, Sevier	57 min
Jul 3, 2:46 AM CDT	Special Weather Statement	SHV	Miller	44 min
Jul 3, 6:46 AM CDT	Special Weather Statement	SHV	Lafayette, Miller	44 min
Jul 2, 10:37 PM CDT	Special Weather Statement	SHV	McCurtain	53 min

Nearby

Special Weather Statements in Arkansas, 2017 Special Weather Statements in Oklahoma, 2017 Every 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.