Alert archive / Arkansas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 331, NWS Little Rock, AR

June 12, 2003Johnson County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Jun 12, 2003, 2:41 AM CDT for Johnson County, Arkansas. It was in force for 49 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: Jun 12, 2003, 2:41 AM CDT (07:41 UTC)
Expired: Jun 12, 2003, 3:30 AM CDT
In force: 49 min
Issued by: NWS Little Rock, AR
Area: Counties, with a storm outline in the text

County Johnson County, AR

The radar

The Western Arkansas radar (KSRX), 81 km from the middle of the area, began a volume at 07:40 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 7.7 hours before the alert went out and 156 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: 416 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 993 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 36 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.

123 
WUUS54 KLZK 120741
SVRLIT
ARC071-120830-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
240 AM CDT THU JUN 12 2003

THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  JOHNSON COUNTY IN WESTERN ARKANSAS

* UNTIL 330 AM CDT

* AT 235 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR             
  INDICATED SEVERE THUNDERSTORM NEAR COAL HILL...MOVING NORTHEAST AT 
  30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CLARKSVILLE AROUND 250 AM CDT
  LAMAR AROUND 255 AM CDT

&&

THE MAIN SEVERE WEATHER THREAT IN THE WARNING AREA IS STRONG AND
GUSTY WINDS. SOME DAMAGE MAY OCCUR SUCH AS DOWNED TREES OR TREE LIMBS
AND POWER LINES. 

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 3561 9367 3541 9368 3545 9345 3536 9336
          3566 9322

$$

55

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 Jun 11, 11:20 PM CDT, 3 hours 21 minutes earlier.

Area forecast discussion, Jun 11, 11:20 PM CDT, 3 hours 21 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1120 PM CDT WED JUN 11 2003

QUICK UPDATE EARLIER TO INCREASE POPS OVER THE SOUTHERN AND CENTRAL
SECTIONS FOR OVERNIGHT. MENTIONED POSSIBLITY OF HEAVY RAINFALL IN
THOSE AREAS ALSO. REST OF PREVIOUS FORECAST ON TRACK.

.LZK...NONE.

22

Hazardous weather outlook, Jun 11, 2:30 PM CDT, 12 hours 11 minutes before

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-121000-

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LITTLE ROCK AR
230 PM CDT WED JUN 11 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE INTO THE EVENING
HOURS ACROSS SOUTHERN ARKANSAS. A FEW OF THE STORMS COULD BRIEFLY
REACH SEVERE LEVELS.

A FRONTAL SYSTEM IS FORECAST TO STALL NEAR THE ARKANSAS AND MISSOURI
BORDER TONIGHT. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO REDEVELOP
NEAR THE FRONT...WITH PRECIPITATION MAINLY AFFECTING THE NORTHERN
HALF OF THE STATE. STORMS ARE EXPECTED TO BE MOST ACTIVE AFTER
MIDNIGHT...WITH A FEW STORMS POSSIBLY BECOMING SEVERE.

LOCALLY HEAVY RAIN CAN ALSO BE EXPECTED THROUGH TONIGHT. THE
ATMOSPHERE IS VERY MOIST...AND THIS WILL ALLOW STORMS TO PRODUCE
RAINFALL MORE EFFICIENTLY. ONE TO TWO INCHES OF RAIN MAY OCCUR IN
LESS THAN AN HOUR IN SOME CASES.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THIS PATTERN OF UNSETTLED WEATHER IS EXPECTED TO CONTINUE FOR
SEVERAL MORE DAYS. THE STALLED FRONT NEAR THE ARKANSAS AND MISSOURI
BORDER WILL MEANDER FOR COUPLE OF DAYS BEFORE MOVING TO THE NORTH.
YET ANOTHER COLD FRONT WILL APPROACH FROM THE PLAINS OVER THE
WEEKEND BEFORE STALLING ACROSS THE REGION. GIVEN THE PATTERN...
CHANCES FOR THUNDERSTORMS ARE MENTIONED IN THE FORECAST THROUGH
EARLY NEXT WEEK.

SPOTTY SEVERE WEATHER IS EXPECTED IN THE COMING DAYS...WITH
LARGE HAIL AND DAMAGING WINDS THE PRIMARY THREATS. LOCALLY HEAVY
RAIN IS ALSO LIKELY...WITH FLASH FLOODING POSSIBLE IN SOME AREAS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED TONIGHT...WITH SEVERE WEATHER
POSSIBLE MAINLY ACROSS THE NORTHERN HALF OF ARKANSAS.

44

In the hours before

Local storm report, Jun 11, 9:15 PM CDT, 5 hours 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK, AR
915 PM CDT WED JUN 11 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0700 PM    2 E CORNERVILLE           AR   .75 INCH HAIL
06/11/03   LINCOLN                        REPORTED BY
                                          STORM SPOTTER

22

Local storm report, Jun 11, 9:47 PM CDT, 4 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
947 PM CDT WED JUN 11 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0928 PM    LITTLE ROCK               AR   .88 INCH HAIL
06/11/03   PULASKI                        HAIL TO NICKEL SIZE NEAR
                                          I-30 AND GEYER SPRINGS RD.
                                          REPORTED BY PUBLIC

0933 PM    LITTLE ROCK               AR   1.75 INCH HAIL
06/11/03   PULASKI                        HAIL TO GOLF BALL SIZE ON
                                          ARCH STREET PIKE. REPORTED
                                          BY LAW ENFORCEMENT

0937 PM    LITTLE ROCK               AR   1.50 INCH HAIL
06/11/03   PULASKI                        HAIL TO THE SIZE OF PING
                                          PONG BALLS AT CHICOT RD.
                                          AND MABELVALE CUTOFF.
                                          REPORTED BY PUBLIC

28

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 7:10 PM CDT	Severe Thunderstorm Warning	LZK	Cleveland	40 min
Jun 11, 7:26 PM CDT	Severe Thunderstorm Warning	LZK	Lincoln	59 min
Jun 11, 8:37 PM CDT	Flash Flood Warning	LZK	Lincoln	3 hr
Jun 11, 9:06 PM CDT	Severe Thunderstorm Warning	LZK	Desha	59 min
Jun 11, 9:16 PM CDT	Severe Thunderstorm Warning	LZK	Pulaski, Saline	59 min
Jun 11, 9:42 PM CDT	Severe Thunderstorm Warning	LZK	Garland	43 min
Jun 11, 9:58 PM CDT	Flash Flood Warning	LZK	Desha	3 hr
Jun 11, 10:30 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke	60 min
Jun 11, 11:04 PM CDT	Flash Flood Warning	LZK	Cleveland	4 hr
Jun 11, 11:10 PM CDT	Flash Flood Warning	LZK	Grant	4 hr
Jun 11, 11:19 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Saline	61 min
Jun 11, 11:30 PM CDT	Flash Flood Warning	LZK	Lincoln	4 hr
Jun 11, 11:39 PM CDT	Severe Thunderstorm Warning	LZK	Perry	61 min
Jun 11, 11:58 PM CDT	Flash Flood Warning	LZK	Ouachita	4 hr
Jun 12, 12:15 AM CDT	Flash Flood Warning	LZK	Clark	4 hr
Jun 12, 12:30 AM CDT	Flash Flood Warning	LZK	Garland, Saline	4 hr
Jun 12, 12:34 AM CDT	Flash Flood Warning	LZK	Jefferson	4 hr
Jun 12, 12:54 AM CDT	Flash Flood Warning	LZK	Desha	4 hr
Jun 12, 1:27 AM CDT	Flash Flood Warning	LZK	Dallas	4 hr
Jun 12, 1:30 AM CDT	Severe Thunderstorm Warning	LZK	Scott	50 min
Jun 12, 1:44 AM CDT	Flash Flood Warning	LZK	Calhoun	4 hr
Jun 12, 2:09 AM CDT	Severe Thunderstorm Warning	LZK	Logan	46 min
Jun 12, 2:10 AM CDT	Flash Flood Warning	LZK	Pike	4 hr
Jun 12, 2:20 AM CDT	Flash Flood Warning	LZK	Drew	3 hr
Jun 12, 4:05 AM CDT	Flash Flood Warning	LZK	Clark	3 hr
Jun 12, 4:23 AM CDT	Flash Flood Warning	LZK	Ouachita	3 hr
Jun 12, 5:06 AM CDT	Flash Flood Warning	LZK	Calhoun	119 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2003 Every severe thunderstorm warning in 2003

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.