Alert archive / Arkansas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 32, NWS Tulsa, OK

February 6, 1999Franklin County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Feb 6, 1999, 8:07 PM CST for Franklin County, Arkansas. It was in force for 53 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Feb 6, 1999, 8:07 PM CST (02:07 UTC)
Expired
Feb 6, 1999, 9:00 PM CST
In force
53 min
Issued by
NWS Tulsa, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Franklin County, AR

The radar

The Western Arkansas radar (KSRX), 49 km from the middle of the area, began a volume at 02:10 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.

What was reported inside it

TimeReportWhereRemark
Feb 6, 8:30 PM CSTThunderstorm WindOzark, ARA large tree was blown onto AR Hwy 23 north of Ozark, blocking traffic for part of the night.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 2.1 hours before the alert went out and 155 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 1999-02-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 19 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 1999-02-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
19 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
498 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
206 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 6, 3:15 PM CST, 4 hours 52 minutes earlier.

Area forecast discussion, Feb 6, 3:15 PM CST, 4 hours 52 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
315 PM CST SAT FEB 6 1999

PROBLEM(S) OF THE DAY:
WILL THERE BE SEVERE CONVECTION?
WHAT TYPE(S) OF SEVERE WEATHER WILL OCCUR?

POTENT SHORT WAVE MOVING ACROSS NM THIS AFTERNOON TOWARD WEST TX WILL
MOVE ON RATHER QUICKLY ACROSS THE AREA OVER THE NEXT 12-18 HRS.
DEVELOPING SURFACE LOW WAS LOCATED NEAR SPS ALONG THE RED RIVER AT
21Z WITH SURFACE BOUNDARY ORIENTED SW-NE STRETCHING ACROSS THE AREA.
LATEST RUC DOING A FAIRLY GOOD JOB WITH THE DEVELOPING LOW AND MOVES
THE LOW ACROSS THE STATE...TO NEAR SEMINOLE AT 00Z...NEAR MIAMI AT
03Z...THEN ON INTO SOUTHWEST MO BY MIDNIGHT.  SEVERE THUNDERSTORM
WATCH JUST ISSUED TILL 9 PM THIS EVENING FOR AREAS ROUGHLY ALONG AND
SOUTH OF I-44.

MODELS IN FAIRLY GOOD AGREEMENT IN MOVING UPPER SYSTEM ACROSS WEST TX
AND INTO EASTERN OK BY MIDNIGHT...THEN ON TO THE EAST AND NORTHEAST
OF THE AREA BY 12Z.  WILL ALSO HAVE TO WATCH FOR THE POTENTIAL FOR
HEAVY RAIN THIS EVENING...BUT WILL NOT ISSUE FFA AT THIS TIME WITH
STORMS EXPECTED TO REMAIN ON THE MOVE.  SOME POTENTIAL FOR TRAINING
ALONG SW-NE SURFACE BOUNDARY IF IT REMAINS ORIENTED AS IT IS TOO
LONG...SO WILL NEED TO WATCH FOR THIS CLOSELY.

PRECIP IS EXPECTED TO CUT OFF QUICKLY AND MOVE TO THE EAST AND
NORTHEAST OF THE AREA BY MORNING.  SHOULD BE A PLEASANT DAY ON SUNDAY
WITH GOOD SUBSIDENCE BEHIND SYSTEM WITH NICE WEATHER EXTENDING INTO
MONDAY AND TUESDAY.  TEMPS WELL ABOVE NORMAL.

NEXT CHANCE OF RAIN STILL LOOKS TO BE WEDNESDAY INTO EARLY THURSDAY.

FCSTID = 4
TUL   46  62  44  70 /  90  10   0   0
FSM   47  63  39  70 /  90  10   0   0
MLC   47  64  42  70 /  90  10   0   0
BVO   42  62  40  70 /  80  10   0   0
FYV   48  60  38  67 /  90  10   0   0
IDB   50  65  39  72 /  90  10   0   0
BYV   47  60  37  67 /  90  10   0   0
MIO   45  61  40  68 /  90  10   0   0
MKO   46  62  44  70 /  90  10   0   0
F10   46  62  43  70 /  90  10   0   0
HHW   50  65  40  72 /  90  10   0   0

.TUL...
OK...NONE.
AR...NONE.

--------------------
EXPERIMENTAL OUTPUT:

HAZARDOUS WEATHER EXPECTED NEXT 24 HOURS: CHANCE SEVERE THUNDERSTORMS
NGM CONFIDENCE:  6 ON A SCALE OF 0 TO 10
ETA CONFIDENCE:  7 ON A SCALE OF 0 TO 10
AVN CONFIDENCE:  6 ON A SCALE OF 0 TO 10
FCST CONFIDENCE: 7 ON A SCALE OF 0 TO 10

In the hours before

Special weather statement, Feb 6, 6:30 PM CST, 1 hour 37 minutes before
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Local storm report, Feb 6, 7:50 PM CST, 17 minutes before
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<head>
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  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
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</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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Local storm report, Feb 6, 7:55 PM CST, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
755 PM CST SAT FEB 06 1999

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0710 PM    WILBURTON                 OK   WIND DAMAGE
02/06/99   LATIMER                        MANY POWER LINES REPORTED
                                          DOWN...SEVERAL TREES
                                          UPROOTED

0710 PM    5 S WILBURTON             OK   WIND DAMAGE
02/06/99   LATIMER                        SEVERAL HOUSES DAMAGED BY
                                          WIND
Local storm report, Feb 6, 8:05 PM CST, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
805 PM CST SAT FEB 06 1999

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0804 PM    4 E HACKETT               AR   60 MPH TSTM GUST
02/06/99   SEBASTIAN

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 6, 6:13 PM CSTSevere Thunderstorm WarningTSAPittsburg62 min
Feb 6, 7:18 PM CSTSevere Thunderstorm WarningTSALatimer, LeFlore42 min
Feb 6, 7:55 PM CSTSevere Thunderstorm WarningTSAChoctaw, Pushmataha65 min
Feb 6, 7:55 PM CSTSevere Thunderstorm WarningTSALeFlore65 min
Feb 6, 10:56 PM CSTSevere Thunderstorm WarningTSAOsage, Pawnee49 min
Feb 6, 11:42 PM CSTSevere Thunderstorm WarningTSAOsage, Pawnee63 min
Feb 6, 7:32 PM CSTSevere Thunderstorm WarningTSACrawford, Sebastian58 min
Feb 6, 8:18 PM CSTFlash Flood WarningTSABenton87 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 1999Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.