Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 310, NWS Fort Worth, TX

May 27, 2015Denton County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at May 27, 2015, 8:38 PM CDT for Denton County, Texas. It was in force for 33 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 27, 2015, 8:38 PM CDT (01:38 UTC)
Expired: May 27, 2015, 9:11 PM CDT
In force: 33 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Denton County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 83 km from the middle of the area, began a volume at 01:40 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 27, 8:41 PM CDT	TSTM WND DMG	2 E Krum, TX	ESTIMATED WINDS 60-70 MPH ON I-35 EAST OF KRUM. SOME SMALL SIGNS DOWN.
May 27, 8:41 PM CDT	HAIL 1	Krum, TX	QUARTER SIZE HAIL EAST OF KRUM ON I-35

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 1.6 hours before the alert went out and 55 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: 2338 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 1151 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 129 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.

303 
WUUS54 KFWD 280138
SVRFWD
TXC121-280245-
/O.NEW.KFWD.SV.W.0310.150528T0138Z-150528T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
838 PM CDT WED MAY 27 2015

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DENTON COUNTY IN NORTH CENTRAL TEXAS...

* UNTIL 945 PM CDT

* AT 838 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR KRUM...OR
  NEAR DENTON...MOVING NORTHEAST AT 20 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  DENTON...CORINTH...HIGHLAND VILLAGE...LAKE DALLAS...SANGER...LAKE
  LEWISVILLE...LITTLE ELM...KRUM...PILOT POINT...ARGYLE...HICKORY
  CREEK...SHADY SHORES...AUBREY...NORTHLAKE...KRUGERVILLE...CROSS
  ROADS...COPPER CANYON...NEW FAIRVIEW...RAY ROBERTS PARK ISLE DU
  BOIS AND OAK POINT.

THIS INCLUDES THE FOLLOWING INTERSTATES...
 INTERSTATE 35 BETWEEN MILE MARKERS 468 AND 481.
 INTERSTATE 35W BETWEEN MILE MARKERS 77 AND 85.
 INTERSTATE 35E BETWEEN MILE MARKERS 456 AND 466.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

HEAVY RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO AREAS 
OF FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3341 9684 3311 9696 3310 9740 3343 9738
TIME...MOT...LOC 0138Z 228DEG 19KT 3322 9725 

HAIL...1.00IN
WIND...60MPH
 
$$

JLDUNN

1 follow-up statement

101 
WWUS54 KFWD 280211
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
911 PM CDT WED MAY 27 2015

TXC121-280221-
/O.CAN.KFWD.SV.W.0310.000000T0000Z-150528T0245Z/
DENTON TX-
911 PM CDT WED MAY 27 2015

...THE SEVERE THUNDERSTORM WARNING FOR DENTON COUNTY IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3341 9684 3311 9696 3310 9740 3343 9738
TIME...MOT...LOC 0208Z 228DEG 19KT 3334 9710 

$$

JLDUNN

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 27, 7:00 PM CDT	Areal Flood Advisory	FWD	Ellis, Navarro	3 hr
May 27, 7:01 PM CDT	Areal Flood Advisory	FWD	Parker	3 hr
May 27, 7:08 PM CDT	Severe Thunderstorm Warning	FWD	Parker, Tarrant	67 min
May 27, 7:12 PM CDT	Special Weather Statement	FWD	Eastland	48 min
May 27, 7:20 PM CDT	Areal Flood Advisory	FWD	Tarrant	3 hr
May 27, 7:37 PM CDT	Flash Flood Warning	FWD	Parker, Tarrant	3 hr
May 27, 8:02 PM CDT	Severe Thunderstorm Warning	FWD	Denton, Tarrant, Wise	58 min
May 27, 8:31 PM CDT	Flash Flood Warning	FWD	Tarrant	119 min
May 27, 8:37 PM CDT	Areal Flood Advisory	FWD	Denton	113 min
May 27, 9:10 PM CDT	Severe Thunderstorm Warning	FWD	Tarrant	35 min
May 28, 2:33 AM CDT	River Flood Warning	FWD	Denton	5 days
May 28, 3:32 AM CDT	Flash Flood Watch	FWD	Anderson, Bell, Bosque, Collin, Comanche, Cooke and 40 more	59 hr
May 28, 6:45 AM CDT	Areal Flood Advisory	FWD	Cooke, Montague	3 hr
May 28, 7:37 AM CDT	Areal Flood Advisory	FWD	Grayson	3 hr
May 28, 8:11 AM CDT	Flash Flood Warning	FWD	Cooke, Grayson	4 hr
May 28, 12:05 PM CDT	Areal Flood Warning	FWD	Cooke, Grayson	3 hr
May 28, 1:41 PM CDT	Special Weather Statement	FWD	Ellis	49 min
May 28, 1:56 PM CDT	Special Weather Statement	FWD	Bell	49 min
May 28, 2:07 PM CDT	River Flood Warning	FWD	Hamilton	18 hr
May 28, 3:24 PM CDT	Special Weather Statement	FWD	Limestone	51 min
May 28, 3:56 PM CDT	Severe Thunderstorm Warning	FWD	Hill, Limestone, McLennan, Navarro	31 min
May 28, 5:27 PM CDT	Severe Thunderstorm Warning	FWD	Young	63 min
May 28, 5:39 PM CDT	Severe Thunderstorm Warning	FWD	Stephens	51 min
May 28, 6:16 PM CDT	Areal Flood Advisory	FWD	Stephens, Young	119 min
May 28, 6:16 PM CDT	Special Weather Statement	FWD	Collin	44 min
May 28, 6:23 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Hunt	41 min
May 28, 6:27 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Palo Pinto, Stephens, Young	63 min
May 28, 6:36 PM CDT	Flash Flood Warning	FWD	Stephens, Young	114 min

Nearby

Severe Thunderstorm Warnings in Texas, 2015 Every severe thunderstorm warning in 2015

Sources

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