Alert archive / Arkansas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 271, NWS Little Rock, AR

July 16, 2018Grant County, Jefferson County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Jul 16, 2018, 3:02 PM CDT for Grant County, Jefferson County, Arkansas. It was in force for 28 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 16, 2018, 3:02 PM CDT (20:02 UTC)
Expired
Jul 16, 2018, 3:30 PM CDT
In force
28 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Grant County, AR, Jefferson County, AR

The radar

The Little Rock radar (KLZK), 62 km from the middle of the area, began a volume at 20:02 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 12:00Z, 8.0 hours before the alert went out and 292 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-pSkew-T log-p diagram, Jackson, MS at 12:00Z on 2018-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1197 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 12:00Z on 2018-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1197 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
954 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

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 16, 2:37 PM CDT, 25 minutes earlier.

Area forecast discussion, Jul 16, 2:37 PM CDT, 25 minutes before
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Hazardous weather outlook, Jul 16, 2:46 PM CDT, 16 minutes before
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In the hours before

Special weather statement, Jul 16, 1:23 PM CDT, 1 hour 39 minutes before
Special Weather Statement
National Weather Service Little Rock AR
123 PM CDT MON JUL 16 2018

ARZ044-161900-
Pulaski AR-
123 PM CDT MON JUL 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL PULASKI COUNTY UNTIL
200 PM CDT...

At 123 PM CDT, Doppler radar was tracking a strong thunderstorm over
Burns Park, or in North Little Rock, moving southeast at 5 mph.

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

Locations impacted include...
Little Rock...                    North Little Rock...
Sherwood...                       Maumelle...
Downtown Little Rock...           North Little Rock Airport...
Argenta...                        Burns Park...
Oak Grove in Pulaski County...    Protho Junction...
Sweet Home...                     Lakewood...
Camp Robinson...                  Levy...
State Fairgrounds...              Scott...
McAlmont...                       Amboy...
Cammack Village...                Baucum...

LAT...LON 3483 9239 3486 9228 3472 9210 3464 9228
TIME...MOT...LOC 1823Z 327DEG 6KT 3479 9230

46
Special weather statement, Jul 16, 1:45 PM CDT, 1 hour 17 minutes before
Special Weather Statement
National Weather Service Little Rock AR
145 PM CDT MON JUL 16 2018

ARZ032-044-161915-
Pulaski AR-Faulkner AR-
145 PM CDT MON JUL 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL FAULKNER AND
NORTHEASTERN PULASKI COUNTIES UNTIL 215 PM CDT...

At 145 PM CDT, Doppler radar was tracking a strong thunderstorm over
Mayflower, moving southeast at 10 mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Little Rock...                    North Little Rock...
Sherwood...                       Maumelle...
North Little Rock Airport...      Mayflower...
Gibson...                         Gravel Ridge...
Morgan...                         Camp Robinson...
Marche...                         Sylvan Hills...
Oak Grove in Pulaski County...    Burns Park...
Amboy...                          Saltillo...
Cato...                           Palarm...

LAT...LON 3499 9249 3504 9233 3487 9217 3478 9238
TIME...MOT...LOC 1845Z 323DEG 9KT 3495 9238

46
Special weather statement, Jul 16, 1:47 PM CDT, 1 hour 15 minutes before
Special Weather Statement
National Weather Service Little Rock AR
147 PM CDT MON JUL 16 2018

ARZ016-161915-
Independence AR-
147 PM CDT MON JUL 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN INDEPENDENCE COUNTY
UNTIL 215 PM CDT...

At 147 PM CDT, Doppler radar was tracking a strong thunderstorm near
Cave City, or 10 miles northeast of Batesville, moving southeast at
10 mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Charlotte...                      Cord...
Dowdy...

LAT...LON 3572 9141 3586 9157 3593 9147 3593 9146
      3589 9146 3589 9136 3586 9127
TIME...MOT...LOC 1847Z 307DEG 8KT 3586 9148

46
Special weather statement, Jul 16, 2:10 PM CDT, 52 minutes before
Special Weather Statement
National Weather Service Little Rock AR
210 PM CDT MON JUL 16 2018

ARZ043-044-161945-
Pulaski AR-Saline AR-
210 PM CDT MON JUL 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL SALINE AND WEST
CENTRAL PULASKI COUNTIES UNTIL 245 PM CDT...

At 210 PM CDT, Doppler radar was tracking a strong thunderstorm near
Pinnacle Mountain State Park, or 10 miles west of Maumelle. This
storm was nearly stationary.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Little Rock...                    Chenal Valley...
Ferndale...

LAT...LON 3486 9267 3488 9255 3474 9245 3470 9262
TIME...MOT...LOC 1910Z 343DEG 4KT 3481 9259

46
Special weather statement, Jul 16, 2:29 PM CDT, 33 minutes before
Special Weather Statement
National Weather Service Little Rock AR
229 PM CDT MON JUL 16 2018

ARZ054-055-162000-
Hot Spring AR-Grant AR-
229 PM CDT MON JUL 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL GRANT AND EAST
CENTRAL HOT SPRING COUNTIES UNTIL 300 PM CDT...

At 228 PM CDT, Doppler radar was tracking a strong thunderstorm over
Poyen, or 10 miles southeast of Malvern, moving northeast at 10 mph.

Dime size hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Prattsville...                    Poyen...
Jenkins Ferry State Park...       Thiel...
Buie...                           Fenter...
Brush Creek...

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.

&&

LAT...LON 3429 9278 3442 9269 3442 9268 3441 9268
      3441 9267 3435 9243 3419 9261
TIME...MOT...LOC 1928Z 216DEG 8KT 3430 9265

67
Special weather statement, Jul 16, 2:56 PM CDT, 6 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 7:28 PM CDTSpecial Weather StatementLZKSaline32 min
Jul 15, 8:23 PM CDTSpecial Weather StatementLZKLonoke37 min
Jul 15, 9:39 PM CDTSpecial Weather StatementLZKLonoke36 min
Jul 15, 10:04 PM CDTSpecial Weather StatementLZKJefferson26 min
Jul 16, 11:52 AM CDTSevere Thunderstorm WarningLZKCleburne, Stone23 min
Jul 16, 12:35 PM CDTSpecial Weather StatementLZKFaulkner25 min
Jul 16, 12:39 PM CDTSevere Thunderstorm WarningLZKFaulkner, Van Buren36 min
Jul 16, 12:47 PM CDTSpecial Weather StatementLZKMarion28 min
Jul 16, 12:50 PM CDTSpecial Weather StatementLZKPulaski25 min
Jul 16, 12:59 PM CDTSpecial Weather StatementLZKFaulkner31 min
Jul 16, 1:23 PM CDTSpecial Weather StatementLZKPulaski37 min
Jul 16, 1:45 PM CDTSpecial Weather StatementLZKPulaski30 min
Jul 16, 1:47 PM CDTSpecial Weather StatementLZKIndependence28 min
Jul 16, 1:51 PM CDTSevere Thunderstorm WarningLZKFaulkner, Pulaski24 min
Jul 16, 2:10 PM CDTSpecial Weather StatementLZKSaline35 min
Jul 16, 2:29 PM CDTSpecial Weather StatementLZKGrant31 min
Jul 16, 2:32 PM CDTFlash Flood WarningLZKBoone, Newton118 min
Jul 16, 2:32 PM CDTSevere Thunderstorm WarningLZKGrant, Hot Spring, Saline28 min
Jul 16, 2:56 PM CDTSpecial Weather StatementLZKGrant34 min
Jul 16, 3:29 PM CDTSevere Thunderstorm WarningLZKArkansas, Cleveland, Jefferson, Lincoln28 min
Jul 16, 3:36 PM CDTSpecial Weather StatementLZKNewton24 min
Jul 16, 3:53 PM CDTSpecial Weather StatementLZKArkansas37 min
Jul 16, 4:23 PM CDTSpecial Weather StatementLZKMontgomery37 min
Jul 16, 4:41 PM CDTSpecial Weather StatementLZKYell34 min
Jul 16, 4:55 PM CDTSevere Thunderstorm WarningLZKPerry, Yell35 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2018Every severe thunderstorm warning in 2018

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.