Alert archive / Arkansas / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 34, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at Mar 20, 2004, 5:39 PM CST for Prairie County, Woodruff County, Arkansas. It was in force for 61 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
- Mar 20, 2004, 5:39 PM CST (23:39 UTC)
- Expired
- Mar 20, 2004, 6:40 PM CST
- In force
- 61 min
- Issued by
- NWS Little Rock, AR
- Area
- Counties, with a storm outline in the text
Counties Prairie County, AR, Woodruff County, AR
The radar
The Little Rock radar (KLZK), 81 km from the middle of the area, began a volume at 23:42 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 12:00Z, 11.7 hours before the alert went out and 133 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
- 320 J/kg
- Mixed-layer CIN
- -329 J/kg
- Mixed-layer LCL
- 818 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 209 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 Mar 20, 3:30 PM CST, 2 hours 9 minutes earlier.
Area forecast discussion, Mar 20, 3:30 PM CST, 2 hours 9 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LITTLE ROCK AR 330 PM CST SAT MAR 20 2004 .SHORT TERM...TONIGHT THROUGH TUESDAY PRE-FRONTAL TROF NOTED OVER NRN AR THIS AFTN AND THIS HAS BEEN THE FOCUS OF SCTD CONVECTION MAINLY OVER THE N-CNTRL AND NERN PARTS OF THE STATE. 18Z KLZK RAOB STILL HAD SOME CAPPING IN THE LOWER LVLS THAT HAD PREVENTED CONVECTION FROM FORMING FURTHER TO THE SW. MEANWHILE...ACTUAL CDFNT WAS JUST ENTERING NWRN AR ATTM AS NOTED BY 88D DATA FROM KSGF AND KLZK. SOME ADDITIONAL CONVECTION HAS BEEN TRYING TO FORM ALONG THIS SECONDARY BNDRY. BREAKS IN THE CLOUDS OVER SERN AR HAVE ALLOWED TEMPS TO WARM WELL INTO THE 80S THIS AFTN. MODELS ARE STILL IN GOOD AGREEMENT WITH SHORT TERM FCST TRENDS. UPPER FLOW IS PROGGED TO AMPLIFY AS UPPER TROF DEEPENS OVER THE ERN STATES. THIS WILL ALLOW SFC CDFNT TO PUSH SEWD THRU THE FA TNGT. WILL CONT TO HAVE HIGHEST POPS ALONG AND AHEAD THE CDFNT THIS EVENING. MODELS HAVE FNT CLEARING SRN AR BEFORE 12 SUN...SO HAVE REMOVED POPS FOR SUN. COOLER AND DRIER AIR WILL MOVE IN BEHIND THE FRONT. HAVE GONE A FEW DEGREES ABOVE MOS HIGH TEMPS FOR SUN WITH PLENTY OF MARCH SUNSHINE EXPECTED TO OFFSET MOST OF THE EFFECTS OF CAA. RATHER CHILLY TEMPS PROGGED FOR MON MORNING...WITH NRN AREAS LIKELY FALLING BLO FREEZING. WILL HAVE TO CONSIDER POSSIBLE FREEZE WARNINGS FOR PARTS OF AR FOR THE SUN NIGHT INTO EARLY MON TIMEFRAME. SFC HIGH PRES WILL PREVAIL OVER THE STATE ON MON. THE CENTER OF THE HIGH WILL SHIFT EWD BY TUE...ALLOWING S-SELY WIND FLOW TO RETURN. UPPER FLOW BEGINS TO FLATTEN OUT SOME BY THIS TIME AS WELL. AFTER A COOL DAY ON MON...TEMPS WILL RETURN TO NEAR OR JUST ABOVE NORMAL LVLS FOR TUE. COULD SEE MORE CLOUDS BY TUE WITH INCREASING WAA. HOWEVER...LACK OF SIG LOW LVL MOISTURE FROM THE GULF WILL KEEP RAIN CHCS NIL. && .LONG TERM...TUESDAY NIGHT THROUGH SATURDAY MOISTURE SURGES NORTHWARD LATE TUESDAY NIGHT...AS UPPER TROUGH OVER CENTRAL TEXAS KICKS OUT INTO THE MID MISSISSIPPI VALLEY. SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE OVER THE AREA THROUGH WEDNESDAY AS TROUGH MOVES THROUGH...AND SEVERAL VORT LOBES WILL MOVE UP AND INTERACT WITH THE SYSTEM. COLD FRONT STALLED/WOBBLING AROUND TO THE NORTHWEST WILL NOT MAKE MUCH PROGRESS TOWARD THE AREA...THUS KEEPING US IN THE WARM SECTOR FOR SEVERAL DAYS. WITH UPPER RIDGE BUILDING OVER THE ATLANTIC COAST...UPPER FLOW WILL BECOME MORE SOUTHWESTERLY AGAIN...AND SEVERAL UPPER LEVEL WAVES WILL RIDE THE MEAN FLOW OVER THE AREA. THUS...KEPT AT LEAST SLIGHT CHANCE POPS IN THROUGH THE REMAINDER OF THE EXTENDED...AS MODELS HAVE BEEN FAIRLY CONSISTENT OVER THE LAST SEVERAL DAYS IN SHOWING THIS SCENARIO. WITH THE SOUTHERLY/SOUTHWESTERLY FLOW OVER THE AREA...TEMPERATURES WILL WARM WELL INTO THE 70S TO NEAR 80 THROUGH MUCH OF THE EXTENDED PERIOD. && .LZK WATCHES/WARNINGS/ADVISORIES...NONE. && 44/57
Hazardous weather outlook, Mar 20, 5:00 AM CST, 12 hours 39 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LITTLE ROCK AR 500 AM CST SAT MAR 20 2004 ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-211100- 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 CST SAT MAR 20 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS. .DAY ONE...TODAY AND TONIGHT THIS AFTERNOON WILL SEE ANOTHER COLD FRONT DROP SOUTH ACROSS THE STATE. IT WILL CROSS ARKANSAS QUICKLY...SO THAT IT WILL BE OUT OF THE STATE BY SUNDAY MORNING. THE POTENTIAL EXISTS FOR SEVERE THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS THIS AFTERNOON AND EVENING...MAINLY OVER THE NORTHERN TWO THIRDS OF THE STATE. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NECESSARY OVER MUCH OF THE STATE THIS AFTERNOON AND EVENING. 32
In the hours before
Local storm report, Mar 20, 1:52 PM CST, 3 hours 47 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 |
|---|---|---|---|---|
| Mar 20, 12:18 PM CST | Severe Thunderstorm Warning | LZK | Independence | 57 min |
| Mar 20, 5:25 PM CST | Severe Thunderstorm Warning | LZK | White | 60 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 2004Every 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.