Alert archive / Arkansas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 21, NWS Little Rock, AR

February 28, 2017Garland County, Montgomery County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Feb 28, 2017, 4:36 PM CST for Garland County, Montgomery County, Arkansas. It was in force for 39 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: Feb 28, 2017, 4:36 PM CST (22:36 UTC)
Expired: Feb 28, 2017, 5:15 PM CST
In force: 39 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Tornado: Possible
Hail: 1.5 in
Wind: 60.0 mph

Counties Garland County, AR, Montgomery County, AR

The radar

The Little Rock radar (KLZK), 94 km from the middle of the area, began a volume at 22:38 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

Time	Report	Where	Remark
Feb 28, 5:00 PM CST	TSTM WND DMG	Hot Springs Village, AR	TREES DOWN ON A HOUSE.
Feb 28, 5:25 PM CST	FUNNEL CLOUD	Jessieville, 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.

Issued	Product	Office	Lasted
Feb 28, 3:40 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 10.6 hours before the alert went out and 246 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: 863 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 584 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 283 m²/s²
0-3 km storm-relative helicity: 280 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 6.4

Open this sounding in Storm Lab

The text

As transmitted.

569 
WUUS54 KLZK 282236
SVRLZK
ARC051-097-282315-
/O.NEW.KLZK.SV.W.0021.170228T2236Z-170228T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Little Rock AR
436 PM CST TUE FEB 28 2017

The National Weather Service in Little Rock has issued a

* Severe Thunderstorm Warning for...
  Northwestern Garland County in central Arkansas...
  Southeastern Montgomery County in western Arkansas...

* Until 515 PM CST

* At 436 PM CST, a severe thunderstorm was located 7 miles north of
  Meyers, or 13 miles east of Mount Ida, moving northeast at 30 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees. 

* Locations impacted include...
  Hot Springs Village...            Mountain Pine...
  Jessieville...                    Lake Ouachita State Park...
  Avant...                          Crystal Springs Landing...
  Mt Tabor...                       Mountain Valley...
  Lena Landing Rec Area...          Silver...
  Hamilton...                       Crystal Springs...
  Hurricane Grove...                

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 1000 PM CST for central and
western Arkansas.

LAT...LON 3478 9324 3477 9297 3463 9298 3440 9357
      3458 9360
TIME...MOT...LOC 2236Z 235DEG 28KT 3456 9339 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...60MPH
 
$$

Cavanaugh

1 follow-up statement

245 
WWUS54 KLZK 282253
SVSLZK

Severe Weather Statement
National Weather Service Little Rock AR
453 PM CST TUE FEB 28 2017

ARC051-097-282315-
/O.CON.KLZK.SV.W.0021.000000T0000Z-170228T2315Z/
Garland AR-Montgomery AR-
453 PM CST TUE FEB 28 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CST
FOR NORTHWESTERN GARLAND AND EAST CENTRAL MONTGOMERY COUNTIES...

At 453 PM CST, a severe thunderstorm was located 8 miles north of
Meyers, or 14 miles east of Mount Ida, moving northeast at 40 mph.

HAZARD...70 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings. 

Locations impacted include...
Hot Springs Village...            Mountain Pine...
Jessieville...                    Lake Ouachita State Park...
Avant...                          Lena Landing Rec Area...
Hamilton...                       Crystal Springs Landing...
Mt Tabor...                       Mountain Valley...
Crystal Springs...                

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 1000 PM CST for central and
western Arkansas.

LAT...LON 3478 9324 3477 9297 3463 9298 3450 9344
      3465 9347
TIME...MOT...LOC 2253Z 239DEG 33KT 3457 9338 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
 
$$

Cavanaugh

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 27, 8:07 PM CST	Special Weather Statement	LZK	Izard	53 min
Feb 28, 2:57 PM CST	Lake Wind Advisory	LZK	Arkansas, Baxter, Bradley, Calhoun, Clark, Cleburne and 28 more	27 hr
Feb 28, 3:38 PM CST	Special Weather Statement	LZK	Montgomery	37 min
Feb 28, 4:07 PM CST	Special Weather Statement	LZK	Garland	38 min
Feb 28, 4:20 PM CST	Special Weather Statement	LZK	Montgomery	40 min
Feb 28, 4:30 PM CST	Special Weather Statement	LZK	Perry	45 min
Feb 28, 4:33 PM CST	Severe Thunderstorm Warning	LZK	Faulkner, Garland, Perry, Pulaski, Saline	42 min
Feb 28, 5:04 PM CST	Tornado Warning	LZK	Garland, Saline	41 min
Feb 28, 5:21 PM CST	Tornado Warning	LZK	Faulkner, Perry, Pulaski, Saline	39 min
Feb 28, 5:43 PM CST	Severe Thunderstorm Warning	LZK	Perry, Pulaski, Saline	32 min
Feb 28, 5:54 PM CST	Tornado Warning	LZK	Faulkner, Pulaski	35 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.