Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 93, NWS Shreveport, LA

May 28, 2001McCurtain County, Oklahoma; Red River County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at May 28, 2001, 1:35 AM CDT for McCurtain County, Oklahoma; Red River County, Texas. It was in force for 60 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: May 28, 2001, 1:35 AM CDT (06:35 UTC)
Expired: May 28, 2001, 2:35 AM CDT
In force: 60 min
Issued by: NWS Shreveport, LA
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties McCurtain County, OK, Red River County, TX

The radar

The Western Arkansas radar (KSRX), 174 km from the middle of the area, began a volume at 06:36 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
May 28, 1:40 AM CDT	Thunderstorm Wind 69 E	Hugo, OK	Thunderstorm wind estimated at 80 miles an hour produced a large amount of damage in the Hugo area. Several businesses including a radio station, lumber company, sale barn, veterinary clinic and a feed lot received damage. Three homes had large trees fall on

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 27, 11:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 6.6 hours before the alert went out and 202 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2794 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1283 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 7.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KSHV 280637
SVRSHV

OKC089-TXC387-280735-
/NEW.KSHV.SV.W.0129.280635-280735/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
135 AM CDT MON MAY 28 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  RED RIVER COUNTY IN NORTHEAST TEXAS
  MCCURTAIN COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 235 AM CDT

* AT 135 AM CDT...THE SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER   
RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS MOVING ACROSS 
NORTHEAST TEXAS AND SOUTHEAST OKLAHOMA. THE LEADING EDGE OF THE LINE
EXTENDED ABOUT 30 MILES WEST OF VALLIANT OKLAHOMA TO ABOUT 20 MILES
WEST OF DETROIT TEXAS AND WAS MOVING TO THE EAST AT 45 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  VALLIANT OKLAHOMA AROUND 145 AM 
  IDABEL OKLAHOMA AROUND 210 AM
  DETROIT TEXAS AROUND 140 AM
  CLARKSVILLE TEXAS AROUND 200 AM.

THESE THUNDERSTORMS WILL PRODUCE LARGE HAIL THE SIZE OF DIMES TO NICKELS
AND STRONG DAMAGING WINDS TO AROUND 65 MPH.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE
THUNDERSTORM WARNING FOR...
  RED RIVER COUNTY IN NORTHEAST TEXAS
  MCCURTAIN COUNTY IN SOUTHEAST OKLAHOMA
UNTIL 235 AM CDT.

LAT...LON 3415 9554 3389 9565 3369 9578 3327 9591
          3339 9527 3343 9478 3375 9475 3370 9450
          3408 9452 3444 9451 3449 9500

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 Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 27, 10:00 PM CDT, 3 hours 35 minutes earlier.

Area forecast discussion, May 27, 10:00 PM CDT, 3 hours 35 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
1000 PM CDT SUN MAY 27 2001

MINI MCC OVER EXTREME NORTHEAST TX...AND SOUTHWEST AR...WILL
CONTINUE TO MOVE EAST ALONG THE WARM FRONT...WHICH THIS MORNING WAS
LOCATED FROM NEAR ARDMORE OK TO TEXARKANA TO JACKSON MS. THIS WARM
FRONT WILL LIKELY MOVE SLOWLY NORTHWARD TODAY AND TONIGHT. WITHOUT
GOOD LOW LEVEL INFLOW INTO THE MINI MCC...AND WITHOUT STRONG MID
LEVEL WINDS...EXPECT THE CONVECTION TO REMAIN BELOW SEVERE
LIMITS...AND PROBABLY WEAKEN AS IT MOVES EASTWARD. ANOTHER ROUND OF
CONVECTION MAY AFFECT THE NORTH HALF OF THE FOUR STATE AREA LATE
TONIGHT AND MONDAY MORNING. WILL HAVE TO MAKE SOME MINOR ADJUSTMENTS
TO POPS AND TEMPS IN THE ZONES ON A LATE MORNING UPDATE...TO REFLECT
THE MOVEMENT AND STRENGTH OF THE CONVECTION ASSOCIATED WITH THE MINI
MCC...FOR THE AFTERNOON PERIOD.

3

.SHV...NONE.

In the hours before

Local storm report, May 27, 10:24 PM CDT, 3 hours 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1024 PM CDT SUN MAY 27 2001

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

0955 PM    EAGLETOWN                 OK   2.75 INCH HAIL
05/27/01   MCCURTAIN                      SOUTHEAST OF
                                          EAGLETOWN...ONE HALF MILE
                                          FROM STATE LINE. HAIL
                                          SMASHED A WINDSHIELD OUT
                                          OF A MOTORIST/S CAR.
                                          REPORTED BY PUBLIC.

Local storm report, May 27, 10:43 PM CDT, 2 hours 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1043 PM CDT SUN MAY 27 2001

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

1015 PM    HORATIO                   AR   1.75 INCH HAIL
05/27/01   SEVIER                         REPORTED BY LAW
                                          ENFORCEMENT.

Local storm report, May 27, 11:09 PM CDT, 2 hours 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1109 PM CDT SUN MAY 27 2001

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

1025 PM    HORATIO                   AR   4.50 INCH HAIL
05/27/01   SEVIER                         REPORTED BY LAW ENFORCEMENT.
                                          NUMEROUS WINDSHIELDS WERE
                                          BROKEN.

1030 PM    CENTRAL                   AR   60 MPH TSTM GUST
05/27/01   SEVIER                         REPORTED BY STORM SPOTTER.

1030 PM    CENTRAL                   AR   1.75 INCH HAIL
05/27/01   |SEVIER                         REPORTED BY STORM SPOTTER.

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 27, 9:29 PM CDT	Severe Thunderstorm Warning	SHV	McCurtain	31 min
May 28, 1:49 AM CDT	Severe Thunderstorm Warning	SHV	Camp, Franklin, Titus, Wood	41 min
May 28, 2:55 AM CDT	Severe Thunderstorm Warning	SHV	Cass	50 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2001 Severe Thunderstorm Warnings in Texas, 2001 Every severe thunderstorm warning in 2001

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.