Alert archive / Arkansas / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 189, NWS Little Rock, AR

June 12, 2004Boone County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Jun 12, 2004, 11:49 AM CDT for Boone County, Arkansas. It was in force for 36 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: Jun 12, 2004, 11:49 AM CDT (16:49 UTC)
Expired: Jun 12, 2004, 12:25 PM CDT
In force: 36 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), 107 km from the middle of the area, began a volume at 16:52 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

Springfield, MO (KSGF), launched 12:00Z, 4.8 hours before the alert went out and 91 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: 2508 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 749 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 4.2

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 Jun 12, 9:15 AM CDT, 2 hours 34 minutes earlier.

Area forecast discussion, Jun 12, 9:15 AM CDT, 2 hours 34 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE LITTLE ROCK AR
915 AM CDT SAT JUN 12 2004

.DISCUSSION...
SCATTERED SHOWERS POPPING UP THIS MORNING FROM SOUTHWEST INTO
CENTRAL ARKANSAS. WOULD FULLY EXPECT OUTFLOW FROM STORMS IN MISSOURI
TO TRIGGER HIT AND MISS SHOWERS/THUNDERSTORMS IN NORTHERN ARKANSAS.
GIVEN THIS...WENT WITH 30/40 PERCENT CHANCE OF PRECIPITATION IN
ABOUT NORTHWEST TWO THIRDS OF STATE...WITH HIGHEST CHANCES TOWARD
NORTHWEST COUNTIES. ONLY 20 PERCENT CHANCE OF PRECIPITATION IN THE
SOUTHEAST. IN MOST CASES...MENTIONED THAT THUNDER WOULD BE ISOLATED
GIVEN SOME CAPPING...AND THE FACT THAT THUNDER HAS HAD DIFFICULTY
DEVELOPING LATELY. (46)
&&

.LZK WATCHES/WARNINGS/ADVISORIES...NONE.
&&

46

Hazardous weather outlook, Jun 12, 5:00 AM CDT, 6 hours 49 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 11:05 AM CDT	Severe Thunderstorm Warning	LZK	Johnson, Pope	30 min
Jun 12, 12:04 PM CDT	Severe Thunderstorm Warning	LZK	Van Buren	41 min
Jun 12, 12:57 PM CDT	Severe Thunderstorm Warning	LZK	Fulton, Izard	43 min
Jun 12, 1:17 PM CDT	Severe Thunderstorm Warning	LZK	Van Buren	28 min
Jun 12, 1:33 PM CDT	Severe Thunderstorm Warning	LZK	Sharp	42 min
Jun 12, 2:08 PM CDT	Severe Thunderstorm Warning	LZK	Independence	27 min
Jun 12, 2:37 PM CDT	Severe Thunderstorm Warning	LZK	Pope	28 min
Jun 12, 3:08 PM CDT	Severe Thunderstorm Warning	LZK	Van Buren	42 min
Jun 12, 4:04 PM CDT	Severe Thunderstorm Warning	LZK	Van Buren	31 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2004 Every severe thunderstorm warning in 2004

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.