Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 273, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at Jul 26, 2012, 7:59 PM CDT for 4 counties in Arkansas. It was in force for 31 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 26, 2012, 7:59 PM CDT (00:59 UTC)
- Expired
- Jul 26, 2012, 8:30 PM CDT
- In force
- 31 min
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
Counties Independence County, AR, Jackson County, AR, White County, AR, Woodruff County, AR
The radar
The Little Rock radar (KLZK), 101 km from the middle of the area, began a volume at 00:59 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 |
|---|---|---|---|
| Jul 26, 5:46 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 00:00Z, 1.0 hours before the alert went out and 152 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
- 1883 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 2025 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 117 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 Jul 26, 3:09 PM CDT, 4 hours 50 minutes earlier.
Area forecast discussion, Jul 26, 3:09 PM CDT, 4 hours 50 minutes before
AREA FORECAST DISCUSSION...UPDATE FOR AVIATION NATIONAL WEATHER SERVICE LITTLE ROCK AR 635 PM CDT THU JUL 2012 .AVIATION... SCATTERED SHOWERS AND THUNDERSTORMS WILL EFFECT ALL TAFS OVER THE 12 HOURS...ESPECIALLY THIS EVENING TO AROUND MIDNIGHT. THEN CONVECTION WILL LOWER IN COVERAGE AND INTENSITY. MAINLY VFR CEILINGS WITH PATCHY MVFR CEILINGS WITH STORMS. A COLD FRONT WILL SLOWLY DRIFT INTO AR AND DEVELOP THE CONVECTION. WINDS SW 5 TO 15 KNOTS SOUTH OF THE FRONT WHILE W TO NW AT 5 TO 15 KNOTS NORTH OF THE FRONT. FRIDAY THE SCATTERED CONVECTION SHOULD BE OVER SOUTH CENTRAL TO SOUTH AR. (59) && .PREV DISCUSSION... /ISSUED 309 PM CDT THU JUL 26 2012/ .SHORT TERM...TONIGHT THROUGH SUNDAY NIGHT COLD FRONT LOCATED ROUGHLY ALONG THE INTERSTATE 44 CORRIDOR IN SOUTHERN MISSOURI...AND WILL CONTINUE TO MOVE SOUTH. ISOLATED CONVECTION HAS DEVELOP ACROSS NORTH CENTRAL ARKANSAS THIS AFTERNOON...WITH MORE WIDESPREAD CONVECTION ACROSS THE FAR NORTHWEST. WITH SOME DRIER AIR NEAR THE FRONT...THERE IS THE POTENTIAL FOR STRONG TO SEVERE WINDS ACROSS NORTHERN ARKANSAS. WITH ANY FIRES...THE DRASTIC WIND CHANGES WILL BE OF GREAT CONCERN. THERE IS A SLIGHT RISK ACROSS THE NORTH...WITH THE POTENTIAL MOSTLY CONFINED THROUGH THE EARLY EVENING HOURS. RAIN CHANCES WILL DECREASE THROUGH THE OVERNIGHT HOURS...BEFORE PICKING BACK UP AS THE FRONT MOVES INTO SOUTHERN ARKANSAS SATURDAY. THE OTHER CONCERN FOR SATURDAY WILL BE TEMPERATURES...ESPECIALLY BEHIND THE FRONT WITH DRIER AIR MIXING DOWN. HAVE GONE 5 OR MORE DEGREES ABOVE GUIDANCE...WITH READINGS APPROACHING 100 DEGREES. WITH THE LOWER DEWPOINTS ACROSS THE NORTH...HEAT HEADLINES ARE NOT EXPECTED. ALSO...CLOUD COVER AND RAINFALL WILL TEMPER READINGS ACROSS THE SOUTH...AND HELP KEEP HEAT INDEX READINGS IN CHECK THERE. UPPER RIDGE QUICKLY BUILDS BACK IN BEHIND THE FRONT FRIDAY NIGHT INTO SATURDAY...WITH DRY AND HOT CONDITIONS CONTINUING. MODELS ARE HINTING AT A WEAK FRONT MOVING ACROSS THE REGION SATURDAY NIGHT INTO SUNDAY...BUT HAVE LEFT A DRY FORECAST AT THIS TIME. && .LONG TERM...MONDAY THROUGH THURSDAY HIGH PRESSURE OVER THE SOUTHERN PLAINS WILL CONTINUE TO BE THE DOMINANT WEATHER FEATURE ACROSS ARKANSAS IN THE EXTENDED PERIOD. A COLD FRONT WILL TRY TO NUDGE INTO THE REGION FROM THE NORTH/EAST...BUT WILL PROBABLY FAIL AS IT ENCOUNTERS THE RIDGE. THE PROXIMITY OF THE FRONT...AND TROPICAL MOISTURE OVER THE SOUTHEAST UNITED STATES MAY LEAD TO AT LEAST ISOLATED THUNDERSTORMS IN THE EASTERN HALF OF THE STATE. OTHERWISE...IT WILL BE MOSTLY DRY AND HOT...WITH ABOVE NORMAL TEMPERATURES. && .LZK WATCHES/WARNINGS/ADVISORIES... HEAT ADVISORY UNTIL 7 PM CDT THIS EVENING FOR ARKANSAS-BAXTER- CLEBURNE-CONWAY-DESHA-DREW-FAULKNER-FULTON-INDEPENDENCE-IZARD- JACKSON-JEFFERSON-JOHNSON-LINCOLN-LOGAN-LONOKE-MONROE-PERRY-POPE- PRAIRIE-PULASKI-SHARP-STONE-WHITE-WOODRUFF-YELL. && SHORT TERM...58 / LONG TERM...46
Hazardous weather outlook, Jul 26, 6:45 PM CDT, 1 hour 14 minutes before
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</html>In the hours before
Special weather statement, Jul 26, 6:59 PM CDT, 1 hour before
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</html>Special weather statement, Jul 26, 7:56 PM CDT, 3 minutes before
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</html>The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 7:03 PM CDT | Special Weather Statement | LZK | Yell | 42 min |
| Jul 26, 7:17 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Independence, Jackson, White, Woodruff | 43 min |
| Jul 26, 7:36 PM CDT | Special Weather Statement | LZK | Montgomery, Polk | 44 min |
| Jul 26, 7:56 PM CDT | Special Weather Statement | LZK | Garland | 44 min |
| Jul 26, 8:55 PM CDT | Special Weather Statement | LZK | Polk | 45 min |
| Jul 26, 9:08 PM CDT | Special Weather Statement | LZK | Pike | 47 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.