Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 422, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at Sep 5, 2012, 3:03 PM CDT for Independence County, Sharp County, Arkansas. It was in force for 17 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
- Sep 5, 2012, 3:03 PM CDT (20:03 UTC)
- Expired
- Sep 5, 2012, 3:20 PM CDT
- In force
- 17 min
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
Counties Independence County, AR, Sharp County, AR
The radar
The Little Rock radar (KLZK), 141 km from the middle of the area, began a volume at 20:06 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 5, 2:29 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 8.1 hours before the alert went out and 190 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.
- Mixed-layer CAPE
- 1178 J/kg
- Mixed-layer CIN
- -111 J/kg
- Mixed-layer LCL
- 1655 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Sep 5, 12:51 PM CDT, 2 hours 12 minutes earlier.
Area forecast discussion, Sep 5, 12:51 PM CDT, 2 hours 12 minutes before
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</html>Hazardous weather outlook, Sep 5, 5:00 AM CDT, 10 hours 3 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LITTLE ROCK AR 500 AM CDT WED SEP 5 2012 ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-061000- ARKANSAS-BAXTER-BOONE-BRADLEY-CALHOUN-CLARK-CLEBURNE-CLEVELAND- CONWAY-DALLAS-DESHA-DREW-FAULKNER-FULTON-GARLAND-GRANT-HOT SPRING- INDEPENDENCE-IZARD-JACKSON-JEFFERSON-JOHNSON-LINCOLN-LOGAN-LONOKE- MARION-MONROE-MONTGOMERY-NEWTON-OUACHITA-PERRY-PIKE-POLK-POPE- PRAIRIE-PULASKI-SALINE-SCOTT-SEARCY-SHARP-STONE-VAN BUREN-WHITE- WOODRUFF-YELL- 500 AM CDT WED SEP 5 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS. .DAY ONE...TODAY AND TONIGHT HOT TEMPERATURES WILL COMBINE WITH HIGH ENOUGH HUMIDITY LEVELS TO CREATE HEAT INDEX VALUES BETWEEN 105 TO 110 DEGREES OVER MUCH OF CENTRAL AND SOUTHERN ARKANSAS THIS AFTERNOON. FOR THIS REASON...A HEAT ADVISORY REMAINS IN EFFECT FOR CENTRAL AND SOUTHERN SECTIONS OF THE STATE THROUGH THIS EVENING. ACROSS THE NORTHERN COUNTIES...HEAT INDICES WILL RANGE FROM 100 TO 105 DEGREES. DURING THE HEAT OF THE AFTERNOON AND EARLY EVENING...ISOLATED THUNDERSTORMS MAY POP UP RANDOMLY...MAINLY IN NORTHERN ARKANSAS. ANY STORMS SHOULD DISSIPATE AFTER SUNSET. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY IT WILL BE SLIGHTLY COOLER ON THURSDAY AS CLOUDS INCREASE AHEAD OF AN APPROACHING COLD FRONT FROM THE NORTH. EVEN SO...ABOVE NORMAL TEMPERATURES ARE IN THE FORECAST. ISOLATED THUNDERSTORMS ARE EXPECTED IN THE AFTERNOON AND EVENING. A STRONGER COLD FRONT WILL PUSH THROUGH THE REGION LATE FRIDAY AND EARLY SATURDAY. SURROUNDING THE FRONT...SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL DEVELOP...AND SOME OF THE STORMS COULD BE SEVERE. DAMAGING STRAIGHT-LINE WINDS WILL BE THE MAIN CONCERN. RAINFALL WILL AVERAGE A QUARTER TO THREE QUARTERS OF AN INCH...WITH LOCALLY OVER AN INCH. MUCH COOLER AND DRIER AIR WILL FOLLOW THE FRONT THIS WEEKEND. WELL BELOW NORMAL TEMPERATURES ARE ANTICIPATED SATURDAY AND SUNDAY. DRY WEATHER WILL CONTINUE INTO EARLY NEXT WEEK...WITH A SLOW WARMING TREND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. && VISIT NWS LITTLE ROCK ON THE WEB. GO TO HTTP://WEATHER.GOV AND CLICK ON CENTRAL ARKANSAS. 46
In the hours before
Special weather statement, Sep 5, 2:17 PM CDT, 46 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LITTLE ROCK AR 217 PM CDT WED SEP 5 2012 ARZ007-015-052000- IZARD AR-SHARP AR- 217 PM CDT WED SEP 5 2012 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN SHARP AND NORTHERN IZARD COUNTIES UNTIL 300 PM CDT... AT 214 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 4 MILES SOUTHEAST OF WIDEMAN...OR 6 MILES NORTHWEST OF MELBOURNE...MOVING EAST AT 15 MPH. ANOTHER STORM WAS NEAR CATFISH LAKE...AND ALSO MOVING EAST AT 15 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. * LOCATIONS IMPACTED INCLUDE... MELBOURNE... WIDEMAN... OXFORD... MYRON... LACROSSE... GORBY... FRANKLIN... ZION... VIOLET HILL... SAGE... LARKIN... EVENING SHADE... BROCKWELL... TWIN BRIDGES... NEWBURG... NEW LIBERTY... MELBOURNE MUNI ARPT... KNOB CREEK... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. LAT...LON 3618 9158 3600 9161 3610 9208 3624 9203 TIME...MOT...LOC 1917Z 284DEG 11KT 3613 9195 58
Special weather statement, Sep 5, 2:48 PM CDT, 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LITTLE ROCK AR 248 PM CDT WED SEP 5 2012 ARZ007-016-052020- INDEPENDENCE AR-SHARP AR- 248 PM CDT WED SEP 5 2012 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN SHARP AND NORTHERN INDEPENDENCE COUNTIES UNTIL 315 PM CDT... AT 244 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 5 MILES SOUTHWEST OF CAVE CITY...OR 9 MILES NORTH OF BATESVILLE...MOVING EAST AT 20 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. * LOCATIONS IMPACTED INCLUDE... CAVE CITY... SANDTOWN... PFEIFFER... JAMES... GAINESBORO... CURIA... CHARLOTTE... AETNA... SHELBYVILLE... CEDAR LAKE... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. LAT...LON 3596 9136 3574 9141 3583 9174 3601 9168 TIME...MOT...LOC 1948Z 285DEG 19KT 3589 9159 58
The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 2:17 PM CDT | Special Weather Statement | LZK | Izard | 43 min |
| Sep 5, 2:48 PM CDT | Special Weather Statement | LZK | Independence | 32 min |
| Sep 5, 3:07 PM CDT | Special Weather Statement | LZK | Independence | 28 min |
| Sep 5, 3:18 PM CDT | Severe Thunderstorm Warning | LZK | Independence, Stone | 27 min |
| Sep 5, 3:24 PM CDT | Special Weather Statement | LZK | Polk | 31 min |
| Sep 5, 3:44 PM CDT | Special Weather Statement | LZK | Jackson | 46 min |
| Sep 5, 4:48 PM CDT | Severe Thunderstorm Warning | LZK | Jackson, Woodruff | 42 min |
| Sep 5, 4:56 PM CDT | Special Weather Statement | LZK | Pike | 44 min |
| Sep 5, 5:29 PM CDT | Severe Thunderstorm Warning | LZK | Jackson, Woodruff | 31 min |
| Sep 5, 5:37 PM CDT | Special Weather Statement | LZK | Woodruff | 43 min |
| Sep 5, 6:20 PM CDT | Special Weather Statement | LZK | Woodruff | 30 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 2012Every severe thunderstorm warning in 2012
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.