Alert archive / Arkansas / Tornado Warnings in 2007

Tornado Warning 13, NWS Little Rock, AR

March 1, 2007Boone County, Arkansas

NWS Little Rock, AR issued this tornado warning at Mar 1, 2007, 4:34 AM CST for Boone County, Arkansas. It was in force for 18 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 1, 2007, 4:34 AM CST (10:34 UTC)
Expired: Mar 1, 2007, 4:52 AM CST
In force: 18 min
Issued by: NWS Little Rock, AR
Area: Counties, with a storm outline in the text

County Boone County, AR

The radar

The Springfield radar (KSGF), 88 km from the middle of the area, began a volume at 10:37 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 1, 1:32 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 10.6 hours before the alert went out and 72 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: 283 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 1189 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: 243 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KLZK 011034
TORLZK
ARC009-011100-
/O.NEW.KLZK.TO.W.0013.070301T1034Z-070301T1100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
434 AM CST THU MAR 1 2007

THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN BOONE COUNTY IN NORTH CENTRAL ARKANSAS

* UNTIL 500 AM CST

* AT 433 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES WEST OF
  OMAHA...MOVING NORTHEAST AT 50 MPH.

* THE TORNADO WILL BE NEAR...
  OMAHA AROUND 440 AM CST...

&&

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

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

LAT...LON 3649 9331 3635 9330 3649 9293

$$

44

1 follow-up statement

000 
WWUS54 KLZK 011052
SVSLZK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
449 AM CST THU MAR 1 2007

ARC009-011059-
/O.CAN.KLZK.TO.W.0013.000000T0000Z-070301T1100Z/
BOONE AR-
449 AM CST THU MAR 1 2007

...THE TORNADO WARNING FOR NORTHWESTERN BOONE COUNTY IS CANCELLED...

THE STORM THAT PROMPTED THE TORNADO WARNING HAS MOVED OUT OF BOONE 
COUNTY. THEREFORE...THE WARNING HAS BEEN CANCELLED.

LAT...LON 3649 9331 3635 9330 3649 9293

$$

44

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 1, 4:25 AM CST	Severe Thunderstorm Warning	LZK	Johnson, Newton	50 min
Mar 1, 5:10 AM CST	Tornado Warning	LZK	Newton	50 min
Mar 1, 5:24 AM CST	Tornado Warning	LZK	Searcy	36 min
Mar 1, 5:35 AM CST	Severe Thunderstorm Warning	LZK	Marion	40 min
Mar 1, 5:44 AM CST	Tornado Warning	LZK	Marion	31 min
Mar 1, 5:58 AM CST	Severe Thunderstorm Warning	LZK	Johnson, Pope	32 min
Mar 1, 5:58 AM CST	Tornado Warning	LZK	Baxter	47 min
Mar 1, 6:21 AM CST	Tornado Warning	LZK	Fulton, Izard	54 min
Mar 1, 6:38 AM CST	Severe Thunderstorm Warning	LZK	Saline	37 min
Mar 1, 7:39 AM CST	Severe Thunderstorm Warning	LZK	Fulton, Izard, Sharp	51 min
Mar 1, 8:15 AM CST	Severe Thunderstorm Warning	LZK	Calhoun	30 min
Mar 1, 9:26 AM CST	Severe Thunderstorm Warning	LZK	Desha, Lincoln	34 min
Mar 1, 3:02 PM CST	Lake Wind Advisory	LZK	Arkansas, Baxter, Bradley, Calhoun, Clark, Cleburne and 28 more	27 hr
Mar 1, 3:06 PM CST	Fire Weather Watch	LZK	Baxter, Calhoun, Clark, Conway, Dallas, Faulkner and 9 more	21 hr

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.