Alert archive / Arkansas / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 29, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Feb 6, 1999, 7:32 PM CST for Crawford County, Sebastian County, Arkansas. It was in force for 58 min. 5 reports 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, 7:32 PM CST (01:32 UTC)
- Expired
- Feb 6, 1999, 8:30 PM CST
- In force
- 58 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Crawford County, AR, Sebastian County, AR
The radar
The Western Arkansas radar (KSRX), 15 km from the middle of the area, began a volume at 01:35 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 6, 7:50 PM CST | Thunderstorm Wind 52 | Van Buren, AR | |
| Feb 6, 8:01 PM CST | Thunderstorm Wind | Midland, AR | Thunderstorm winds blew the roof off of a shop, tore off a chimney, destroyed a porch, destroyed a barn, destroyed an outhouse, and uprooted numerous trees in a localized area about one mile north of Midland. |
| Feb 6, 8:04 PM CST | Thunderstorm Wind 56 | Hackett, AR | At 804 PM, there was a HAM radio operator reported 60 mph winds 4 miles east of Hackett. At 805 PM, another HAM radio operator reported 65 mph winds in Excelsior. |
| Feb 6, 8:07 PM CST | Thunderstorm Wind 61 | Huntington, AR | |
| Feb 6, 8:10 PM CST | Thunderstorm Wind 61 | Greenwood, AR | Winds of 70 mph caused some roof damage in Greenwood. |
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, 1.5 hours before the alert went out and 172 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
- 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
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 17 minutes earlier.
Area forecast discussion, Feb 6, 3:15 PM CST, 4 hours 17 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 2 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</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>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 6, 6:13 PM CST | Severe Thunderstorm Warning | TSA | Pittsburg | 62 min |
| Feb 6, 7:18 PM CST | Severe Thunderstorm Warning | TSA | Latimer, LeFlore | 42 min |
| Feb 6, 7:55 PM CST | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 65 min |
| Feb 6, 7:55 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 65 min |
| Feb 6, 10:56 PM CST | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 49 min |
| Feb 6, 11:42 PM CST | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 63 min |
| Feb 6, 8:07 PM CST | Severe Thunderstorm Warning | TSA | Franklin | 53 min |
| Feb 6, 8:18 PM CST | Flash Flood Warning | TSA | Benton | 87 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.