Alert archive / Texas / Flash Flood Warnings in 1999

Flash Flood Warning 20, NWS Norman, OK

May 16, 1999Foard County, Wilbarger County, Texas

NWS Norman, OK issued this flash flood warning at May 16, 1999, 10:36 PM CDT for Foard County, Wilbarger County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 16, 1999, 10:36 PM CDT (03:36 UTC)
Expired
May 17, 1999, 1:30 AM CDT
In force
3 hr
Issued by
NWS Norman, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Foard County, TX, Wilbarger County, TX

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 3.6 hours before the alert went out and 234 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, Norman, OK at 00:00Z on 1999-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3513 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, Norman, OK at 00:00Z on 1999-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 square meters per square second.193958Sfc1 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
3513 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
880 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
1.3
Supercell composite
8.9

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 flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Norman, OK wrote its last area forecast discussion before this flash flood warning went out at May 16, 4:00 PM CDT, 6 hours 36 minutes earlier.

Area forecast discussion, May 16, 4:00 PM CDT, 6 hours 36 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
400 PM CDT SUN MAY 16 1999

WEAK SHORT WAVE MOVING THROUGH SOUTHWEST TEXAS THIS AFTERNOON
COMBINED WITH STRONG HEATING MAY LEAD TO A FEW THUNDERSTORMS
DEVELOPING ALONG THE DRYLINE IN WESTERN OKLAHOMA AND WESTERN NORTH
TEXAS DURING THE LATE AFTERNOON AND EVENING HOURS... AS PER WW 274.
SURFACE MOISTURE CONVERGENCE HAS MAINTAINED A LOCAL MAX IN THIS
AREA. SOUTHWEST WINDS AHEAD OF THE DRYLINE IN NORTHWEST OKLAHOMA HAS
RESULTED IN WEAKER SURFACE CONVERGENCE IN THIS AREA. MEANWHILE... A
COLD FRONT IN THE OKLAHOMA PANHANDLE IS EXPECTED TO MOVE INTO
NORTHWEST OKLAHOMA LATER TONIGHT. THUNDERSTORMS ARE ALSO EXPECTED TO
DEVELOP ALONG THE FRONT AND SPREAD SOUTHEAST. ETA IS INDICATING A
FAVORABLE JUXTAPOSITION OF UPPER LEVEL JET STREAKS ACROSS THE CWA
LATE TONIGHT... LEADING TO UPPER LEVEL DIVERGENCE. MODELS SEEM TO
USE RESULTING LIFT TO WEAKEN THE CAP A BIT OVER THE AREA. THUS COULD
ALSO SEE A FEW THUNDERSTORMS DEVELOP LATE AHEAD OF THE COLD FRONT.
MOST OF THE THUNDERSTORMS EXPECTED TO BE IN THE SOUTHEAST BY MONDAY
AFTERNOON WITH DRY WEATHER IN THE AREA BY TUESDAY. WILL MAINTAIN A
CHANCE FOR MORE THUNDERSTORMS ON THURSDAY WITH ANOTHER WAVE MOVING
ACROSS THE AREA.

FCSTID = 32
OKC   68  78  56  80 /  50  60  10   0
HBR   66  81  55  83 /  50  50  10   0
SPS   69  81  57  83 /  50  60  20   0
GAG   61  71  50  79 /  40  20  10   0
PNC   68  76  55  78 /  50  50  10   0
DUA   71  80  59  82 /  40  60  30  10

.OUN...
OK...NONE.
TX...NONE.

In the hours before

Local storm report, May 16, 8:36 PM CDT, 2 hours before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
836 PM CDT SUN MAY 16 1999

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

0830 PM    MANGUM                    OK   WIND DAMAGE
05/16/99   GREER                          ELECTRIC POLE BLOWN ONTO
                                          SMALL BLDG.

0828 PM    QUANAH                    TX   1.00 INCH HAIL
05/16/99   HARDEMAN                       AMATEUR RADIO REPORT

0832 PM    CAMARGO                   OK   .75 INCH HAIL
05/16/99   DEWEY                          SPOTTER REPORT

FM
Local storm report, May 16, 8:36 PM CDT, 2 hours before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
836 PM CDT SUN MAY 16 1999

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

0830 PM    MANGUM                    OK   WIND DAMAGE
05/16/99   GREER                          ELECTRIC POLE BLOWN ONTO
                                          SMALL BLDG.

0828 PM    QUANAH                    TX   1.00 INCH HAIL
05/16/99   HARDEMAN                       AMATEUR RADIO REPORT

0832 PM    CAMARGO                   OK   .75 INCH HAIL
05/16/99   DEWEY                          SPOTTER REPORT

FM
Local storm report, May 16, 8:47 PM CDT, 1 hour 49 minutes before
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Local storm report, May 16, 8:47 PM CDT, 1 hour 49 minutes before
<!doctype html>
<html lang="en">
<head>
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<body>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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        Please try again in a few minutes.
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Local storm report, May 16, 9:11 PM CDT, 1 hour 25 minutes before
<!doctype html>
<html lang="en">
<head>
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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>
      <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">
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      </p>
    </section>
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Local storm report, May 16, 9:11 PM CDT, 1 hour 25 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>
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  <script src="index.js"></script>
</body>
</html>

The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 7:03 PM CDTSevere Thunderstorm WarningOUNHarmon42 min
May 16, 7:03 PM CDTSevere Thunderstorm WarningOUNGreer42 min
May 16, 7:15 PM CDTSevere Thunderstorm WarningOUNDewey, Major, Woods, Woodward45 min
May 16, 7:20 PM CDTSevere Thunderstorm WarningOUNBeckham55 min
May 16, 7:38 PM CDTSevere Thunderstorm WarningOUNRoger Mills52 min
May 16, 8:15 PM CDTSevere Thunderstorm WarningOUNBeckham45 min
May 16, 8:25 PM CDTSevere Thunderstorm WarningOUNWoods, Woodward50 min
May 16, 8:30 PM CDTSevere Thunderstorm WarningOUNCuster, Dewey, Roger Mills45 min
May 16, 8:41 PM CDTSevere Thunderstorm WarningOUNWashita49 min
May 16, 9:01 PM CDTSevere Thunderstorm WarningOUNTillman59 min
May 16, 9:10 PM CDTSevere Thunderstorm WarningOUNCuster50 min
May 16, 9:14 PM CDTTornado WarningOUNWoods31 min
May 16, 9:21 PM CDTSevere Thunderstorm WarningOUNBlaine39 min
May 16, 9:22 PM CDTSevere Thunderstorm WarningOUNWoodward68 min
May 16, 9:35 PM CDTSevere Thunderstorm WarningOUNWoods40 min
May 16, 10:02 PM CDTSevere Thunderstorm WarningOUNTillman43 min
May 16, 10:07 PM CDTSevere Thunderstorm WarningOUNBlaine, Caddo, Canadian, Grady53 min
May 16, 10:07 PM CDTSevere Thunderstorm WarningOUNGarfield, Kingfisher, Major53 min
May 16, 10:13 PM CDTSevere Thunderstorm WarningOUNComanche, Cotton47 min
May 16, 10:22 PM CDTSevere Thunderstorm WarningOUNTillman53 min
May 16, 10:45 PM CDTSevere Thunderstorm WarningOUNStephens60 min
May 16, 10:54 PM CDTSevere Thunderstorm WarningOUNOklahoma66 min
May 16, 11:00 PM CDTSevere Thunderstorm WarningOUNGrady45 min
May 16, 11:09 PM CDTSevere Thunderstorm WarningOUNComanche, Cotton51 min
May 16, 11:15 PM CDTSevere Thunderstorm WarningOUNKay, Noble45 min
May 16, 11:43 PM CDTSevere Thunderstorm WarningOUNJefferson, Stephens47 min
May 16, 11:56 PM CDTSevere Thunderstorm WarningOUNCotton34 min
May 17, 12:17 AM CDTSevere Thunderstorm WarningOUNPontotoc, Pottawatomie, Seminole28 min
May 17, 12:17 AM CDTSevere Thunderstorm WarningOUNMurray28 min
May 17, 12:26 AM CDTSevere Thunderstorm WarningOUNCarter, Garvin, Murray34 min
May 17, 12:40 AM CDTSevere Thunderstorm WarningOUNMurray, Pontotoc50 min
May 17, 12:40 AM CDTSevere Thunderstorm WarningOUNHughes, Seminole50 min
May 17, 1:06 AM CDTSevere Thunderstorm WarningOUNBlaine, Caddo39 min
May 17, 1:42 AM CDTSevere Thunderstorm WarningOUNBlaine, Canadian48 min
May 17, 2:15 AM CDTSevere Thunderstorm WarningOUNCleveland, McClain45 min
May 17, 2:27 AM CDTSevere Thunderstorm WarningOUNCanadian48 min
May 17, 2:41 AM CDTSevere Thunderstorm WarningOUNBlaine, Kingfisher49 min
May 17, 3:21 AM CDTSevere Thunderstorm WarningOUNLincoln39 min
May 17, 3:27 AM CDTSevere Thunderstorm WarningOUNKingfisher, Logan, Oklahoma33 min
May 17, 3:27 AM CDTSevere Thunderstorm WarningOUNGarfield33 min
May 17, 3:56 AM CDTSevere Thunderstorm WarningOUNGarfield49 min
May 17, 12:34 PM CDTSevere Thunderstorm WarningOUNBryan56 min
May 17, 2:12 PM CDTSevere Thunderstorm WarningOUNBryan48 min
May 17, 2:31 PM CDTSevere Thunderstorm WarningOUNAtoka44 min
May 16, 7:54 PM CDTSevere Thunderstorm WarningOUNFoard, Hardeman51 min
May 16, 8:37 PM CDTTornado WarningOUNFoard, Hardeman, Wilbarger38 min
May 16, 9:18 PM CDTSevere Thunderstorm WarningOUNWilbarger42 min
May 16, 9:25 PM CDTSevere Thunderstorm WarningOUNFoard50 min
May 16, 9:43 PM CDTSevere Thunderstorm WarningOUNWilbarger47 min
May 16, 10:16 PM CDTSevere Thunderstorm WarningOUNFoard44 min
May 16, 10:29 PM CDTSevere Thunderstorm WarningOUNWilbarger46 min
May 16, 11:12 PM CDTSevere Thunderstorm WarningOUNWichita, Wilbarger48 min

Nearby

Flash Flood Warnings in Texas, 1999Every flash flood 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; the sounding from the Mesonet's radiosonde archive.