Alert archive / Arkansas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 271, NWS Little Rock, AR

July 4, 2017Lonoke County, Prairie County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Jul 4, 2017, 4:05 PM CDT for Lonoke County, Prairie County, Arkansas. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 4, 2017, 4:05 PM CDT (21:05 UTC)
Expired: Jul 4, 2017, 4:30 PM CDT
In force: 25 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Lonoke County, AR, Prairie County, AR

The radar

The Little Rock radar (KLZK), 50 km from the middle of the area, began a volume at 21:09 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

Little Rock, AR (KBYH), launched 12:00Z, 9.1 hours before the alert went out and 162 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: 1262 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 811 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -59 m²/s²
0-3 km storm-relative helicity: -49 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Little Rock, AR wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 4, 3:02 PM CDT, 1 hour 3 minutes earlier.

Area forecast discussion, Jul 4, 3:02 PM CDT, 1 hour 3 minutes before

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Hazardous weather outlook, Jul 4, 1:55 PM CDT, 2 hours 10 minutes before

Hazardous Weather Outlook
National Weather Service Little Rock AR
155 PM CDT Tue Jul 4 2017

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-051000-
Boone-Marion-Baxter-Fulton-Sharp-Newton-Searcy-Stone-Izard-
Independence-Johnson-Pope-Van Buren-Cleburne-Jackson-Logan-Conway-
Faulkner-White-Woodruff-Scott-Yell-Perry-Polk-Montgomery-Garland-
Saline-Pulaski-Lonoke-Prairie-Monroe-Pike-Clark-Hot Spring-Grant-
Jefferson-Arkansas-Dallas-Cleveland-Lincoln-Desha-Ouachita-Calhoun-
Bradley-Drew-
155 PM CDT Tue Jul 4 2017

This Hazardous Weather Outlook is for a Large Part of Arkansas.

.DAY ONE...Today and Tonight

Scattered showers and thunderstorms are expected across much of
Arkansas through tonight. Through late afternoon, heavy rain, and
brief damaging wind gusts will be possible with the strongest
storms. The strongest storms are expected to affect areas along and
northeast of a line from Harrison, to Clarendon.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Scattered showers and thunderstorms are possible through the period
with the best chances over the north and northeast sections of the
state. Some decrease in coverage is expected over the weekend as
upper level high pressure starts to build in from the west. Overall,
the chances for hazardous weather are minimal during this period.

.Spotter Information Statement...

Spotter activation is not expected at this time.

&&

Visit NWS Little Rock on the web. Go to http://weather.gov/lzk.

55/44/56

In the hours before

Special weather statement, Jul 4, 12:46 PM CDT, 3 hours 19 minutes before

Special Weather Statement
National Weather Service Little Rock AR
1246 PM CDT TUE JUL 4 2017

ARZ014-023-024-032-033-044-045-041830-
Pulaski AR-White AR-Stone AR-Van Buren AR-Lonoke AR-Faulkner AR-
Cleburne AR-
1246 PM CDT TUE JUL 4 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN STONE...EASTERN VAN
BUREN...WESTERN CLEBURNE...NORTHWESTERN LONOKE...NORTHEASTERN
CONWAY...FAULKNER...SOUTHWESTERN WHITE AND NORTHEASTERN PULASKI
COUNTIES UNTIL 130 PM CDT...

At 1246 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Rocky Hill to near Guy to near Olmstead.
Movement was east at 10 mph.

Wind gusts up to 50 mph will be possible with these storms.

Locations impacted include...
Jacksonville...                   Cabot...
Heber Springs...                  Clinton...
Fairfield Bay...                  Little Rock AFB...
Beebe...                          Greenbrier...
Ward...                           Vilonia...
Austin in Lonoke County...        Greers Ferry...
Quitman...                        Guy...
Rose Bud...                       Damascus...
Enola...                          Twin Groves...
Shirley...                        Mount Vernon...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3584 9224 3538 9204 3488 9186 3490 9229
      3541 9248 3546 9248 3546 9250 3573 9262
TIME...MOT...LOC 1746Z 261DEG 11KT 3567 9251 3534 9237 3498 9223

57

Local storm report, Jul 4, 1:26 PM CDT, 2 hours 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
126 PM CDT TUE JUL 04 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1259 PM     TSTM WND DMG     1 E VILONIA             35.08N 92.19W
07/04/2017                   FAULKNER           AR   SOCIAL MEDIA

            TREES REPORTED BLOWN DOWN.

&&

55

Special weather statement, Jul 4, 2:05 PM CDT, 2 hours before

Special Weather Statement
National Weather Service Little Rock AR
205 PM CDT TUE JUL 4 2017

ARZ033-034-046-041945-
White AR-Prairie AR-Woodruff AR-
205 PM CDT TUE JUL 4 2017

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL WOODRUFF...
NORTHWESTERN PRAIRIE AND SOUTHEASTERN WHITE COUNTIES UNTIL 245 PM
CDT...

At 203 PM CDT, Doppler radar was tracking a series of strong
thunderstorms in White County moving northeast at 10 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Searcy...                         Bald Knob...
Judsonia...                       Kensett...
Higginson...                      West Point...
Pryor...                          Hurricane Lake WMA...
Garner...                         Griffithville...
Vinity Corner...                  Walker...
Worden...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3500 9179 3519 9181 3540 9156 3517 9136
TIME...MOT...LOC 1903Z 231DEG 10KT 3514 9167

Brown

Special weather statement, Jul 4, 2:29 PM CDT, 1 hour 36 minutes before

Special Weather Statement
National Weather Service Little Rock AR
229 PM CDT TUE JUL 4 2017

ARZ007-014>016-024-025-033-042015-
White AR-Stone AR-Independence AR-Sharp AR-Izard AR-Jackson AR-
Cleburne AR-
229 PM CDT TUE JUL 4 2017

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL STONE...
INDEPENDENCE...SOUTHEASTERN IZARD...SOUTHWESTERN JACKSON...
SOUTHEASTERN CLEBURNE...NORTHEASTERN WHITE AND SOUTHWESTERN SHARP
COUNTIES UNTIL 315 PM CDT...

At 229 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Croker to near Batesville to 6 miles
southeast of Concord to near Pangburn. Movement was northeast at 20
mph.

Wind gusts up to 50 mph will be possible with these storms.

Locations impacted include...
Batesville...                     Cave City...
Newark...                         Pangburn...
Cushman...                        Mount Pleasant...
Pleasant Plains...                Oil Trough...
Magness...                        Sidney...
Moorefield...                     Salado...
Croker...                         Steprock...
Gid...                            Southside in Independence Count...
Stella...                         Sulphur Rock...
Evening Shade...                  Bethesda...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3617 9169 3597 9139 3582 9141 3544 9146
      3538 9199 3556 9181 3571 9179 3586 9202
TIME...MOT...LOC 1929Z 231DEG 17KT 3586 9190 3575 9174 3560 9175 3548
9188

57

Special weather statement, Jul 4, 3:24 PM CDT, 41 minutes before

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Special weather statement, Jul 4, 3:53 PM CDT, 12 minutes before

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The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 3, 7:11 PM CDT	River Flood Advisory	LZK	Independence, Jackson, Lawrence	36 hr
Jul 4, 12:46 PM CDT	Special Weather Statement	LZK	Faulkner, Van Buren	44 min
Jul 4, 12:58 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Faulkner, White	29 min
Jul 4, 1:47 PM CDT	Flash Flood Warning	LZK	Fulton, Independence, Izard, Sharp, Stone	2 hr
Jul 4, 2:05 PM CDT	Special Weather Statement	LZK	White	40 min
Jul 4, 2:29 PM CDT	Special Weather Statement	LZK	Independence	46 min
Jul 4, 2:31 PM CDT	Severe Thunderstorm Warning	LZK	Jackson, White, Woodruff	44 min
Jul 4, 2:41 PM CDT	Tornado Warning	LZK	Jackson, White, Woodruff	17 min
Jul 4, 3:24 PM CDT	Special Weather Statement	LZK	Lonoke	36 min
Jul 4, 3:53 PM CDT	Special Weather Statement	LZK	Prairie	37 min
Jul 4, 4:34 PM CDT	Special Weather Statement	LZK	Prairie	41 min
Jul 4, 4:39 PM CDT	Special Weather Statement	LZK	Faulkner	36 min
Jul 4, 5:12 PM CDT	Special Weather Statement	LZK	Monroe, Prairie	33 min
Jul 4, 5:38 PM CDT	Severe Thunderstorm Warning	LZK	Monroe, Prairie	37 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2017 Every severe thunderstorm warning 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.