Alert archive / Arkansas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 185, NWS Little Rock, AR

May 25, 2002Perry County, Yell County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at May 25, 2002, 4:20 PM CDT for Perry County, Yell County, Arkansas. It was in force for 55 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 25, 2002, 4:20 PM CDT (21:20 UTC)
Expired: May 25, 2002, 5:15 PM CDT
In force: 55 min
Issued by: NWS Little Rock, AR
Area: Counties, with a storm outline in the text

Counties Perry County, AR, Yell County, AR

The radar

The Little Rock radar (KLZK), 84 km from the middle of the area, began a volume at 21:19 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
May 25, 4:26 PM CDT	Hail 0.75	Danville, AR
May 25, 5:07 PM CDT	Hail 0.88	Belleville, AR

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 9.3 hours before the alert went out and 294 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: 829 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 858 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 63 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 May 25, 2:55 PM CDT, 1 hour 25 minutes earlier.

Area forecast discussion, May 25, 2:55 PM CDT, 1 hour 25 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LITTLE ROCK AR
255 PM CDT SAT MAY 25 2002

FORECAST CONCERNS: TEMPERATURES AND RAIN CHANCES.

LATEST MSAS DATA SHOWING COLD FRONT OVER NWRN AR WITH A PRE-FRONTAL
TROF RUNNING FROM SERN MO BACK INTO SERN OK ATTM. HAVE BEEN SEEING
SOME SHRA/TSRA FORM ALONG THE TROF AND THE FRONT THIS AFTN. TEMPS
RUNNING FROM THE 60S OVER FAR NWRN AR TO THE LOWER AND MID 80S AHEAD
OF THE FRONT.

MODELS ARE IN DECENT AGREEMENT WITH OVERALL TRENDS...BUT DO DIFFER
SOMEWHAT WITH PLACEMENT OF FRONT AND ASSOCIATED QPF. UPPER FLOW WILL
BRING SEVERAL SHORTWAVES ACROSS THE FA THE NEXT 48 HOURS RESULTING
IN A CONTINUED CHC OF SHRA/TSRA. LOOKING AT LESS AREAL COVERAGE ON
MONDAY AS FRONT FALLS APART AND LIMITED UPPER SUPPORT.

LATEST RUC STILL SHOWING SHALLOW COOLER AIRMASS BEHIND BNDRY WILL
TEND TO HANG UP OVER THE HIGHER TERRAIN OF THE OZARKS EARLY TONIGHT
AND THEN BECOME QUASI-STATIONARY OVER CNTRL AR LATE TONIGHT. ETA IS
THE MORE AGGRESSIVE MODEL IN TAKING THE FRONT FURTHER SWD ON
SUNDAY...WITH THE AVN IN THE MIDDLE. WENT MORE WITH THE AVN FOR THIS
FCST.

STILL THINK THE BNDRY WILL FALL APART OVER THE NEXT 24 TO 36
HOURS...BUT ANY LEFTOVER MESOSCALE BNDRY/S WILL STILL BE ENOUGH TO
JUSTIFY POPS OVER MOST AREAS INTO MONDAY. BETTER CHANCES WILL BE
OVER CNTRL AND SRN AR WHERE HIGHER LOW LVL MOISTURE WILL BE IN PLACE.

AFTER BRIEF COOLDOWN N OF THE FRONT TONIGHT OVER NWRN AR...TEMPS
WILL NOT SHOW MUCH CHANGE THE NEXT FEW DAYS. ALL THE MOS OUTPUT
TEMPS ARE WITHIN A FEW DEGREES OF EACH OTHER...SO PLAN NO MAJOR
DEVIATIONS ATTM.

IN THE EXTENDED...MODELS CONTINUE TO TREND TOWARD MORE UNSETTLED
WEATHER THRU THE MIDWEEK PERIOD AS UPPER TROF DRIFTS INTO THE
MIDSOUTH FROM THE WRN STATES AND GETS CUTOFF FROM THE NRN STREAM
FLOW. PLAN TO PLACE SCATTERED POPS IN STARTING TUESDAY THRU
THURSDAY. DRIER AND SEASONABLE WX TO FOLLOW FOR LATE IN THE WEEK.
..44..

.LZK...NONE.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 5:05 PM CDT	Severe Thunderstorm Warning	LZK	Van Buren	40 min
May 25, 5:58 PM CDT	Severe Thunderstorm Warning	LZK	Independence	47 min
May 25, 6:14 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne	46 min
May 25, 6:19 PM CDT	Severe Thunderstorm Warning	LZK	Jackson	56 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.