Alert archive / Arkansas / Tornado Warnings in 2007

Tornado Warning 21, NWS Little Rock, AR

March 27, 2007Clark County, Arkansas

NWS Little Rock, AR issued this tornado warning at Mar 27, 2007, 5:54 PM CDT for Clark County, Arkansas. 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: Mar 27, 2007, 5:54 PM CDT (22:54 UTC)
Expired: Mar 27, 2007, 6:45 PM CDT
In force: 51 min
Issued by: NWS Little Rock, AR
Area: Counties, with a storm outline in the text

County Clark County, AR

The radar

The Little Rock radar (KLZK), 115 km from the middle of the area, began a volume at 22:57 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 watch it was issued in

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

Issued	Product	Office	Lasted
Mar 27, 12:35 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 10.9 hours before the alert went out and 198 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 738 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS54 KLZK 272256
TORLZK
ARC019-272345-
/O.NEW.KLZK.TO.W.0021.070327T2254Z-070327T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
554 PM CDT TUE MAR 27 2007

THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN CLARK COUNTY IN SOUTHWEST ARKANSAS

* UNTIL 645 PM CDT

* AT 553 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 15 MILES WEST OF
  DEGRAY LAKE...OR 5 MILES SOUTHWEST OF ALPINE...MOVING NORTHEAST AT
  35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DEGRAY LAKE...

&&

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN LITTLE ROCK.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT TUESDAY EVENING
FOR SOUTHERN ARKANSAS.

LAT...LON 3420 9344 3422 9348 3427 9347 3429 9338
      3427 9319 3424 9316 3425 9313 3423 9304
      3416 9304 3415 9299 3407 9342

$$

46

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 27, 4:10 PM CDT	Severe Thunderstorm Warning	LZK	Bradley, Calhoun	50 min
Mar 27, 4:13 PM CDT	Tornado Warning	LZK	Dallas	47 min
Mar 27, 4:21 PM CDT	Tornado Warning	LZK	Bradley	54 min
Mar 27, 5:13 PM CDT	Severe Thunderstorm Warning	LZK	Drew	47 min
Mar 27, 6:21 PM CDT	Severe Thunderstorm Warning	LZK	Desha	54 min
Mar 27, 6:59 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, White	46 min

Nearby

Tornado Warnings in Arkansas, 2007 Every tornado warning in 2007 Tornadoes in 2007

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.