Alert archive / Arkansas / Tornado Warnings in 2017

Tornado Warning 21, NWS Little Rock, AR

March 9, 20174 counties in Arkansas

NWS Little Rock, AR issued this tornado warning at Mar 9, 2017, 9:41 PM CST for 4 counties in Arkansas. It was in force for 34 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Mar 9, 2017, 9:41 PM CST (03:41 UTC)
Expired
Mar 9, 2017, 10:15 PM CST
In force
34 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.25 in

Counties Cleburne County, AR, Independence County, AR, Stone County, AR, White County, AR

The radar

The Little Rock radar (KLZK), 103 km from the middle of the area, began a volume at 03:43 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.

What was reported inside it

TimeReportWhereRemark
Mar 9, 9:50 PM CSTTSTM WND GST 582 N Bethesda, AR
Mar 9, 9:50 PM CSTHAIL 12 N Bethesda, AR

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Mar 9, 6:42 PM CSTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Little Rock, AR (KBYH), launched 00:00Z, 3.7 hours before the alert went out and 181 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, Little Rock, AR at 00:00Z on 2017-03-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 445 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 00:00Z on 2017-03-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 172 square meters per square second.1939587897Sfc1 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
445 J/kg
Mixed-layer CIN
-58 J/kg
Mixed-layer LCL
583 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
172 m²/s²
0-3 km storm-relative helicity
312 m²/s²
Significant tornado parameter
0.5
Supercell composite
6.1

Open this sounding in Storm Lab

The text

As transmitted.

070 
WFUS54 KLZK 100341
TORLZK
ARC023-063-137-145-100415-
/O.NEW.KLZK.TO.W.0021.170310T0341Z-170310T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Little Rock AR
941 PM CST THU MAR 9 2017

The National Weather Service in Little Rock has issued a

* Tornado Warning for...
  Southeastern Stone County in north central Arkansas...
  Southwestern Independence County in north central Arkansas...
  Northeastern Cleburne County in north central Arkansas...
  North central White County in central Arkansas...

* Until 1015 PM CST
    
* At 941 PM CST, a severe thunderstorm capable of producing a tornado
  was located 8 miles southeast of Mountain View, moving southeast at
  50 mph.

  HAZARD...Tornado and half dollar size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* Locations impacted include...
  Batesville...                     Mountain View...
  Newark...                         Pleasant Plains...
  Concord...                        Magness...
  Moorefield...                     Salado...
  Herpel...                         Southside in Independence
  Count...
  Sulphur Rock...                   Bethesda...
  Ben...                            Almond...
  Hickory Flat...                   Desha...
  Locust Grove...                   Huff...
  Roosevelt...                      Marcella...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3573 9144 3553 9157 3552 9159 3551 9158
      3541 9165 3576 9216 3591 9203
TIME...MOT...LOC 0341Z 305DEG 44KT 3578 9200 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

Brown
1 follow-up statement
696 
WWUS54 KLZK 100401
SVSLZK

Severe Weather Statement
National Weather Service Little Rock AR
1001 PM CST THU MAR 9 2017

ARC137-145-100410-
/O.CAN.KLZK.TO.W.0021.000000T0000Z-170310T0415Z/
Stone AR-White AR-
1001 PM CST THU MAR 9 2017

...THE TORNADO WARNING FOR SOUTHEASTERN STONE AND NORTH CENTRAL WHITE
COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of Stone and White conties. Therefore the warning has been cancelled 
for those counties. 

A severe thunderstorm watch remains in effect until midnight CST for
eastern, central and north central Arkansas.

LAT...LON 3573 9144 3553 9157 3553 9176 3567 9188
      3581 9176
TIME...MOT...LOC 0400Z 305DEG 44KT 3564 9176 

$$

ARC023-063-100415-
/O.CON.KLZK.TO.W.0021.000000T0000Z-170310T0415Z/
Independence AR-Cleburne AR-
1001 PM CST THU MAR 9 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 PM CST FOR
SOUTHWESTERN INDEPENDENCE AND NORTHEASTERN CLEBURNE COUNTIES...
    
At 1000 PM CST, a severe thunderstorm capable of producing a tornado
was located near Concord, or 11 miles southwest of Batesville, moving
southeast at 50 mph.

HAZARD...Tornado and half dollar size hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

Locations impacted include...
Batesville...                     Newark...
Pleasant Plains...                Concord...
Magness...                        Moorefield...
Salado...                         Southside in Independence Count...
Sulphur Rock...                   Almond...
Rosie...                          Desha...
Locust Grove...                   Huff...
Hutchinson...                     

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3573 9144 3553 9157 3553 9176 3567 9188
      3581 9176
TIME...MOT...LOC 0400Z 305DEG 44KT 3564 9176 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

Brown

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 9, 7:18 PM CSTSevere Thunderstorm WarningLZKBaxter, Boone, Marion57 min
Mar 9, 7:44 PM CSTTornado WarningLZKBoone31 min
Mar 9, 7:56 PM CSTTornado WarningLZKBaxter, Marion25 min
Mar 9, 8:12 PM CSTTornado WarningLZKBoone, Marion18 min
Mar 9, 8:24 PM CSTSpecial Weather StatementLZKBaxter, Fulton, Izard51 min
Mar 9, 8:28 PM CSTSevere Thunderstorm WarningLZKBaxter, Boone, Marion, Searcy47 min
Mar 9, 8:58 PM CSTSevere Thunderstorm WarningLZKBaxter, Marion, Searcy, Stone, Van Buren47 min
Mar 9, 9:14 PM CSTSpecial Weather StatementLZKIndependence, Izard, Sharp, Stone46 min
Mar 9, 9:31 PM CSTSpecial Weather StatementLZKNewton44 min
Mar 9, 9:35 PM CSTSevere Thunderstorm WarningLZKCleburne, Independence, Izard, Stone, White40 min
Mar 9, 10:11 PM CSTSevere Thunderstorm WarningLZKIndependence, Jackson, White, Woodruff49 min
Mar 9, 10:50 PM CSTSevere Thunderstorm WarningLZKWoodruff25 min
Mar 9, 11:14 PM CSTSpecial Weather StatementLZKScott46 min
Mar 9, 11:21 PM CSTSpecial Weather StatementLZKPerry39 min
Mar 9, 11:25 PM CSTSevere Thunderstorm WarningLZKConway, Perry35 min
Mar 10, 12:02 AM CSTSpecial Weather StatementLZKSaline43 min
Mar 10, 12:14 AM CSTSevere Thunderstorm WarningLZKPulaski, Saline46 min
Mar 10, 12:17 AM CSTSpecial Weather StatementLZKPolk43 min
Mar 10, 12:42 AM CSTSpecial Weather StatementLZKArkansas33 min
Mar 10, 1:02 AM CSTSpecial Weather StatementLZKGrant58 min
Mar 10, 1:12 AM CSTSevere Thunderstorm WarningLZKGrant, Jefferson48 min
Mar 10, 2:02 AM CSTSpecial Weather StatementLZKLincoln43 min
Mar 10, 2:40 AM CSTSpecial Weather StatementLZKDrew50 min
Mar 10, 4:22 AM CSTLake Wind AdvisoryLZKArkansas, Bradley, Calhoun, Cleburne, Cleveland, Dallas and 17 more11 hr
Mar 10, 4:51 AM CSTFreeze WarningLZKBaxter, Fulton, Izard, Marion, Sharp, Stone22 hr

Nearby

Tornado Warnings in Arkansas, 2017Every tornado warning in 2017Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.