Alert archive / Arkansas / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 41, NWS Little Rock, AR

April 5, 2005White County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Apr 5, 2005, 11:33 PM CDT for White County, Arkansas. It was in force for 57 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: Apr 5, 2005, 11:33 PM CDT (04:33 UTC)
Expired: Apr 6, 2005, 12:30 AM CDT
In force: 57 min
Issued by: NWS Little Rock, AR
Area: Counties, with a storm outline in the text

County White County, AR

The radar

The Little Rock radar (KLZK), 66 km from the middle of the area, began a volume at 04:33 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 00:00Z, 4.6 hours before the alert went out and 170 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: 571 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 1056 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.7

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 Apr 5, 3:04 PM CDT, 8 hours 29 minutes earlier.

Area forecast discussion, Apr 5, 3:04 PM CDT, 8 hours 29 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LITTLE ROCK AR
304 PM CDT TUE APR 5 2005

.SHORT TERM....TONIGHT THROUGH FRIDAY...
OBSERVATIONAL DATA INDICATES CONVECTION IS INITIATING ALONG A DRY LINE
IN CENTRAL OKLAHOMA. INDIVIDUAL CELLS ARE CURRENTLY EXIHIBITING A
MOVEMENT TOWARDS THE NORTH-NORTHEAST.

CONSIDERABLE CONVECTIVE INHIBITION EXISTS ACROSS THE FORECAST
AREA...HOWEVER AS THE UPPER LOW NOW CENTERED OVER THE TEXAS
PANHANDLE APPROACHES...THE INHIBITION SHOULD WEAKEN.  FORECAST THERMODYNAMIC
AND SHEAR PROFILES SUGGEST A SQUALL LINE IS THE MOST LIKELY MODE OF
CONVECTION TO AFFECT THE FORECAST AREA OVERNIGHT.

THE UPPER LOW WILL STILL PROMOTE SCATTERED CONVECTION ON
WEDNESDAY...ESPECIALLY ACROSS THE EAST.

&&

.LONG TERM....FRIDAY NIGHT THROUGH TUESDAY...
HIGH PRESSURE WILL BEGIN THE EXTENDED PERIOD ACROSS THE MID SOUTH.
THE UPPER RIDGE WILL MOVE EAST AND BE CENTERED OVER ARKANSAS
SATURDAY MORNING. HIGH PRESSURE AND DRY WEATHER WILL CONTINUE
THROUGH EARLY SUNDAY. A COLD FRONT IN THE PLAINS WILL SLOWLY MOVE
EAST SUNDAY. THE LOW WILL RUN INTO STRONG HIGH PRESSURE OVER THE
EASTERN U.S. ON TUESDAY. THIS WILL SLOW OR POSSIBLY EVEN STALL THE
FRONT OVER ARKANSAS. WILL KEEP A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN FOR THE WEST SUNDAY AFTERNOON...THEN A CHANCE OF
SHOWERS AND THUNDERSTORMS SUNDAY NIGHT THROUGH TUESDAY IN ALL AREAS.
WILL NEED TO KEEP AN EYE ON THIS SYSTEM. SHOULD THE MOVEMENT BE AS
SLOW AS THE GFS IS SHOWING...HEAVY RAIN COULD BE A POSSIBILITY NEXT
WEEK. TEMPERATURES WILL BE SEASONABLE THROUGH THE PERIOD.

&&

.PRELIMINARY POINT TEMPS/POPS...
LITTLE ROCK   AR  58  70  49  66 /  70  40  30  20
HARRISON AR       55  62  45  62 /  70  40  40  20
HOT SPRINGS AR    58  68  48  67 /  60  40  30  20
PINE BLUFF AR     59  72  49  68 /  70  40  30  30
MOUNTAIN HOME AR  56  64  45  62 /  70  50  40  20
MONTICELLO AR     60  73  50  69 /  60  30  30  30
SEARCY AR         58  69  48  65 /  70  40  40  30
MOUNT IDA AR      58  67  48  67 /  60  40  30  10
RUSSELLVILLE AR   56  65  47  65 /  60  40  40  20
&&

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

&&

SHORT TERM...55 / LONG TERM....51

Hazardous weather outlook, Apr 5, 10:35 PM CDT, 58 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1035 PM CDT TUE APR 5 2005

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-061100-
INDEPENDENCE-CONWAY-FAULKNER-IZARD-NEWTON-SEARCY-SCOTT-YELL-PERRY-
JEFFERSON-STONE-HOT SPRING-GRANT-WHITE-WOODRUFF-GARLAND-CLEVELAND-
DALLAS-CALHOUN-OUACHITA-DESHA-LINCOLN-LOGAN-BRADLEY-SALINE-BAXTER-
MARION-SHARP-FULTON-BOONE-MONTGOMERY-POLK-JACKSON-CLEBURNE-
VAN BUREN-POPE-PIKE-PULASKI-MONROE-LONOKE-PRAIRIE-DREW-ARKANSAS-
CLARK-JOHNSON-
1035 PM CDT TUE APR 5 2005

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

.DAY ONE...TONIGHT

A LINE OF THUNDERSTORMS IN WESTERN ARKANSAS WILL CONTINUE MOVING
QUICKLY THROUGH CENTRAL AND EASTERN ARKANSAS OVERNIGHT. AT 1030
PM...THE LINE EXTENDED FROM YELLVILLE TO MORRILTON AND HOT SPRINGS.

WITH A FAST FORWARD SPEED...THE LINE OF STORMS WILL HAVE A TENDENCY
TO PRODUCE WIND DAMAGE IN SPOTS WITH TREES AND POWER LINES DOWN.
THERE HAVE ALSO BEEN SOME REPORTS OF HAIL...WITH PENNY SIZE HAIL IN
HOT SPRINGS...FOR EXAMPLE.

IT APPEARS THAT MOST SEVERE WEATHER WILL OCCUR ACROSS NORTHERN AND
CENTRAL SECTIONS OF THE STATE DURING THE OVERNIGHT HOURS. THE LINE
OF STORMS RESPONSIBLE FOR THE SEVERE WEATHER SHOULD EXIT THE STATE
TO THE NORTHEAST BY AROUND 3 AM.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS WEDNESDAY OVER MUCH
OF ARKANSAS. A STORM SYSTEM IN THE SOUTHERN PLAINS WILL MOVE
OVERHEAD...AND WILL BE ASSOCIATED WITH COLD AIR ALOFT. THIS WILL
MAKE IT EASIER FOR HAIL TO FORM IN DEVELOPING STORMS. THE STORMS ARE
EXPECTED TO POP UP WEDNESDAY AFTERNOON AND EVENING OVER MUCH OF THE
STATE.

.SPOTTER ACTIVATION STATEMENT...

STORM SPOTTER ACTIVATION WILL REMAIN LIKELY OVERNIGHT...ESPECIALLY
IN NORTHERN AND CENTRAL ARKANSAS. SPOTTERS MAY NEED TO BE ACTIVATED
ONCE AGAIN WEDNESDAY AFTERNOON...WITH SEVERE WEATHER POSSIBLE.

&&

FOR THE LATEST GRAPHICAL AND TEXT FORECASTS AND OUTLOOKS...PLEASE
VISIT OUR WEB SITE AT WWW.SRH.WEATHER.GOV/LZK

46

In the hours before

Local storm report, Apr 5, 9:21 PM CDT, 2 hours 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
921 PM CDT TUE APR 05 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0848 PM     HAIL             HATFIELD                34.49N 94.38W
04/05/2005  0.75 INCH        POLK               AR   LAW ENFORCEMENT

&&

BB

Local storm report, Apr 5, 9:41 PM CDT, 1 hour 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
941 PM CDT TUE APR 05 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0930 PM     HAIL             LANGLEY                 34.32N 93.83W
04/05/2005  0.75 INCH        PIKE               AR   CO-OP OBSERVER

&&

BB

Local storm report, Apr 5, 10:23 PM CDT, 1 hour 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1023 PM CDT TUE APR 05 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0935 PM     TSTM WND DMG     NORMAN                  34.46N 93.68W
04/05/2005                   MONTGOMERY         AR   COUNTY OFFICIAL

            POWER LINES DOWN. MOST OF COUNTY WITHOUT ELECTRICITY.

&&

BB

Local storm report, Apr 5, 10:38 PM CDT, 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1038 PM CDT TUE APR 05 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1032 PM     HAIL             6 SW HOT SPRINGS        34.43N 93.13W
04/05/2005  0.75 INCH        GARLAND            AR   LAW ENFORCEMENT

&&

BB

Local storm report, Apr 5, 11:21 PM CDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1121 PM CDT TUE APR 05 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1015 PM     TSTM WND DMG     4 NE CLARKSVILLE        35.50N 93.42W
04/05/2005                   JOHNSON            AR   LAW ENFORCEMENT

            TREES DOWN.

&&

BB

Local storm report, Apr 5, 11:23 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1123 PM CDT TUE APR 05 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1110 PM     TSTM WND DMG     CLINTON                 35.58N 92.45W
04/05/2005                   VAN BUREN          AR   LAW ENFORCEMENT

            TREES AND POWER LINES DOWN.

&&

BB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 8:26 PM CDT	Severe Thunderstorm Warning	LZK	Polk	64 min
Apr 5, 9:26 PM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Pike, Polk	49 min
Apr 5, 10:03 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan	42 min
Apr 5, 10:22 PM CDT	Severe Thunderstorm Warning	LZK	Conway, Perry, Pope	53 min
Apr 5, 10:29 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Saline	61 min
Apr 5, 10:49 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner, Van Buren	56 min
Apr 5, 11:02 PM CDT	Severe Thunderstorm Warning	LZK	Pulaski, Saline	58 min
Apr 5, 11:19 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Stone	56 min
Apr 6, 7:30 AM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Jefferson	45 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2005 Every severe thunderstorm warning in 2005

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.