Alert archive / Arkansas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 229, NWS Little Rock, AR

July 12, 2002Jefferson County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Jul 12, 2002, 6:51 PM CDT for Jefferson County, Arkansas. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 12, 2002, 6:51 PM CDT (23:51 UTC)
Expired: Jul 12, 2002, 7:30 PM CDT
In force: 39 min
Issued by: NWS Little Rock, AR
Area: Counties, with a storm outline in the text

County Jefferson County, AR

The radar

The Little Rock radar (KLZK), 70 km from the middle of the area, began a volume at 23:51 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 nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 11.9 hours before the alert went out and 192 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: 2149 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 615 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Jul 12, 3:00 PM CDT, 3 hours 51 minutes earlier.

Area forecast discussion, Jul 12, 3:00 PM CDT, 3 hours 51 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LITTLE ROCK AR
300 PM CDT FRI JUL 12 2002

THE UPPER LEVEL LOW WILL CONTINUE TO DEVELOP AND MOVE TOWARDS
ARKANSAS TONIGHT...THEN CONTINUE IN THE VICINITY THROUGH MONDAY. AN
AREA OF HIGHER MEAN RELATIVE HUMIDITY AHEAD OF THIS APPROACHING LOW
WILL BRING ABOUT SCATTERED TO NUMEROUS THUNDERSTORMS TO MOST OF
ARKANSAS TONIGHT THROUGH MONDAY. RAINFALL WILL AVERAGE HALF AN
INCH...WITH ISOLATED HIGHER AMOUNTS. TEMPERATURES WILL CONTINUE AT
OR SLIGHTLY ABOVE NORMAL FOR THE MOST PART...BUT WILL FALL BELOW
NORMAL IN THE AREAS OF INCREASED CLOUDS AND RAIN. SOME AREA WILL
CONTINUE FREE OF RAIN.

FCSTID = 38
HRO   67  83  66  84 /  40  50  20  30
LIT   72  88  70  88 /  40  50  20  30
HOT   71  87  69  88 /  40  50  20  30
PBF   74  88  70  88 /  30  50  20  30

.LZK...
AR...NONE.

In the hours before

Local storm report, Jul 12, 1:36 PM CDT, 5 hours 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK, AR
136 PM CDT FRI JUL 12 2002

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

0115 PM    2 S BERGMAN               AR   .75 INCH HAIL
07/12/02   BOONE                          REPORTED BY STORM SPOTTER.

57/218

Special weather statement, Jul 12, 3:37 PM CDT, 3 hours 14 minutes before

ARZ003>007-012>016-021>025-030>033-037>045-052>054-130000-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
337 PM CDT FRI JUL 12 2002

...SEVERE THUNDERSTORMS ARE POSSIBLE TONIGHT OVER MUCH OF NORTHERN
AND CENTRAL ARKANSAS...

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER NORTHERN AND
CENTRAL ARKANSAS THIS AFTERNOON AND TONIGHT. THE RISK AREA
GENERALLY ALONG AND WEST OF A LINE FROM SALEM...TO AUGUSTA...TO
LITTLE ROCK...TO NASHVILLE.

A COLD FRONT OVER SOUTHWESTERN MISSOURI AND NORTHEAST OKLAHOMA WILL
CONTINUE TO MOVE SOUTHEAST INTO ARKANSAS TONIGHT. DAYTIME HEATING AND
ABUNDANT LOW AND MID LEVEL MOISTURE WILL ALLOW FOR SHOWERS AND
THUNDERSTORMS TO CONTINUE TO DEVELOP ALONG AND OUT AHEAD OF THE COLD
FRONT OVER NORTHWEST AND WESTERN ARKANSAS.

THE PRIMARY THREAT WITH THE THUNDERSTORMS WILL BE HAIL UP TO 2 INCHES
IN DIAMETER...AND DAMAGING WIND GUSTS TO 70 MPH.

ACTIVATION OF STORM SPOTTERS...EMERGENCY MANAGERS...AND HAM RADIO
OPERATORS WILL BE LIKELY THIS AFTERNOON AND TONIGHT.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TV
STATIONS FOR UPDATES ON THIS DEVELOPING WEATHER SITUATION.

57

Local storm report, Jul 12, 4:26 PM CDT, 2 hours 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK, AR
426 PM CDT FRI JUL 12 2002

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

0410 PM    5 W RUSSELLVILLE          AR   .75 INCH HAIL
07/12/02   YELL                           REPORTED BY PUBLIC

22

Local storm report, Jul 12, 5:07 PM CDT, 1 hour 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK, AR
507 PM CDT FRI JUL 12 2002

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

0130 PM    6 SW PYATT                AR   .75 INCH HAIL
07/12/02   BOONE                          REPORTED BY PUBLIC

22

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 8:42 PM CDT	Flash Flood Warning	LZK	Izard, Sharp	2 hr
Jul 12, 1:18 PM CDT	Severe Thunderstorm Warning	LZK	Boone, Marion	57 min
Jul 12, 2:57 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas	33 min
Jul 12, 3:56 PM CDT	Severe Thunderstorm Warning	LZK	Logan, Yell	34 min
Jul 12, 3:57 PM CDT	Severe Thunderstorm Warning	LZK	Logan, Yell	33 min
Jul 12, 4:45 PM CDT	Severe Thunderstorm Warning	LZK	Yell	45 min
Jul 12, 4:50 PM CDT	Severe Thunderstorm Warning	LZK	White	40 min
Jul 12, 5:41 PM CDT	Severe Thunderstorm Warning	LZK	Pulaski, Saline	49 min
Jul 12, 5:52 PM CDT	Severe Thunderstorm Warning	LZK	Saline	38 min
Jul 12, 6:08 PM CDT	Severe Thunderstorm Warning	LZK	Hot Spring	37 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2002 Every severe thunderstorm warning in 2002

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.