Alert archive / Texas / Flash Flood Warnings in 2011

Flash Flood Warning 3, NWS Fort Worth, TX

April 25, 2011Ellis County, Henderson County, Navarro County, Texas

NWS Fort Worth, TX issued this flash flood warning at Apr 25, 2011, 6:12 PM CDT for Ellis County, Henderson County, Navarro County, Texas. It was in force for 2 hr. 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: Apr 25, 2011, 6:12 PM CDT (23:12 UTC)
Expired: Apr 25, 2011, 8:15 PM CDT
In force: 2 hr
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Flood severity: None

Counties Ellis County, TX, Henderson County, TX, Navarro County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 97 km from the middle of the area, began a volume at 23:13 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
Apr 25, 6:16 PM CDT	FLASH FLOOD	1 Sw Corsicana, TX	ROADS COVERED WITH SEVERAL INCHES OF WATER JUST SOUTHWEST OF CORSICANA.
Apr 25, 6:51 PM CDT	FLASH FLOOD	Corsicana, TX	STREETS BARRICADED IN CORSICANA DUE TO FLOODING...OAKLAWN AREA, BUSINESS 45, PARTS OF WEST COLLIN

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this flash flood warning; the first came 4 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.2 hours before the alert went out and 113 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: 2645 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 564 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 346 m²/s²
0-3 km storm-relative helicity: 373 m²/s²
Significant tornado parameter: 6.1
Supercell composite: 21.8

Open this sounding in Storm Lab

The text

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

820 
WGUS54 KFWD 252312
FFWFWD
TXC139-213-349-260115-
/O.NEW.KFWD.FF.W.0003.110425T2312Z-110426T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
612 PM CDT MON APR 25 2011

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN ELLIS COUNTY IN NORTH CENTRAL TEXAS
  NAVARRO COUNTY IN NORTH CENTRAL TEXAS
  WESTERN HENDERSON COUNTY IN NORTHEAST TEXAS

* UNTIL 815 PM CDT

* AT 612 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
  THUNDERSTORMS WITH HEAVY RAIN 5 MILES EAST OF CORSICANA...MOVING
  EAST AT 25 MPH. RADAR INDICATES THAT 1 TO 3 INCHES OF RAIN HAS
  ALREADY FALLEN. ANOTHER 1 TO 2 INCHES WILL BE POSSIBLE THROUGH 
  815 PM CDT.  

* LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY HEAVY RAIN
  INCLUDE...KERENS...SEVEN POINTS...TOOL...GUN BARREL CITY...
  ENCHANTED OAKS...CORSICANA AND TRINIDAD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN WATER COVERS THE ROADWAY REMEMBER...TURN AROUND DONT DROWN. IT
ONLY TAKES TWO FEET OF RUSHING WATER TO CARRY AWAY MOST SPORT UTILITY
VEHICLES AND PICKUPS. TAKE A DIFFERENT ROUTE TO REACH YOUR
DESTINATION OR WAIT UNTIL THE WATER RECEDES. REMEMBER...MOST FLOOD
RELATED DEATHS OCCUR IN AUTOMOBILES.

&&

LAT...LON 3234 9610 3203 9604 3190 9630 3199 9675
      3212 9683 3231 9669

$$

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 Fort Worth, TX wrote its last area forecast discussion before this flash flood warning went out at Apr 25, 2:48 PM CDT, 3 hours 24 minutes earlier.

Area forecast discussion, Apr 25, 2:48 PM CDT, 3 hours 24 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FORT WORTH TX
248 PM CDT MON APR 25 2011

.DISCUSSION...
HIGH END SEVERE THREAT CONTINUES FOR THE REST OF TODAY..WITH
TORNADO WATCHES COVERING ALL AREAS EAST OF THE COLD FRONT/DRY
LINE. MIDDAY SOUNDING SHOWS ALMOST 5000 JOULES OF CAPE...THE
MOST WE HAVE SEEN IN QUITE A WHILE.

COLD FRONT/DRY LINE WILL SHUT OFF CONVECTION FROM THE WEST...BUT
ON TUESDAY THE WARM SECTOR WILL STILL COVER EASTERN NORTH TEXAS
AND AS FRONT RETREATS NORTH THERE REMAINS A THREAT FOR STORMS IN
THE SOUTH AND EAST THROUGH TUESDAY NIGHT. ON WEDNESDAY THE NEXT
SYSTEM PUSHES THE COLD FRONT THROUGH EARLY AND THE STORM THREAT
SHUTS OFF FROM THE WEST AGAIN. BY MID DAY NORTH TEXAS SHOULD BE DONE
WITH STORMS FOR A FEW DAYS.

EXPECT A DRIER ATMOSPHERE AND SOME SUBSIDENCE...AND THUS A
CAP...THROUGH FRIDAY. NEXT FRONT PUSHES IN SATURDAY AND HAVE
CONTINUED THE LOW POPS FOR THAT SYSTEM.

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  56  85  57  76  51 /  40  10  20   5   5
WACO, TX              64  93  57  82  48 /  20  20  20   5   5
PARIS, TX             62  80  55  72  49 /  60  20  40  30   5
DENTON, TX            56  83  53  75  46 /  40  10  20   5   5
MCKINNEY, TX          56  84  55  75  48 /  50  10  30  10   5
DALLAS, TX            58  86  57  77  53 /  50  10  20   5   5
TERRELL, TX           62  84  55  77  48 /  60  20  30  10   5
CORSICANA, TX         70  88  57  80  49 /  50  20  20   5   5
TEMPLE, TX            66  95  58  85  48 /  20  20  20   5   5
MINERAL WELLS, TX     56  88  53  77  46 /  10  10  10   5   5

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

Hazardous weather outlook, Apr 25, 2:26 PM CDT, 3 hours 46 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
226 PM CDT MON APR 25 2011

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-261145-
MONTAGUE-COOKE-GRAYSON-FANNIN-LAMAR-YOUNG-JACK-WISE-DENTON-COLLIN-
HUNT-DELTA-HOPKINS-STEPHENS-PALO PINTO-PARKER-TARRANT-DALLAS-
ROCKWALL-KAUFMAN-VAN ZANDT-RAINS-EASTLAND-ERATH-HOOD-SOMERVELL-
JOHNSON-ELLIS-HENDERSON-COMANCHE-MILLS-HAMILTON-BOSQUE-HILL-NAVARRO-
FREESTONE-ANDERSON-LAMPASAS-CORYELL-BELL-MCLENNAN-FALLS-LIMESTONE-
LEON-MILAM-ROBERTSON-
226 PM CDT MON APR 25 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...THROUGH TONIGHT.

A TORNADO WATCH IS IN EFFECT FOR MUCH OF NORTH TEXAS THROUGH 6 PM.

THERE IS A CHANCE OF THUNDERSTORMS ACROSS ALL OF NORTH TEXAS
THROUGH THIS EVENING. SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP
ALONG AND EAST A DRY LINE AND COLD FRONT THIS AFTERNOON. THERE IS A
SLIGHT RISK OF SEVERE THUNDERSTORMS ALONG THE I-35 CORRIDOR AND A
MODERATE RISK OF SEVERE THUNDERSTORMS TO THE EAST OF I-35. SEVERE
THUNDERSTORMS WILL HAVE THE POTENTIAL TO PRODUCE VERY LARGE
HAIL...DAMAGING WINDS...AND TORNADOES. AREAS THAT SAW SOAKING
RAINS OVER THE WEEKEND MAY EXPERIENCE NUISANCE PONDING OR FLASH
FLOODING IF SUSTAINED HEAVY RAIN OCCURS AGAIN TODAY.

ELEVATED FIRE WEATHER CONDITIONS ARE EXPECTED ACROSS THE WESTERN
COUNTIES OF NORTH TEXAS THIS AFTERNOON DUE TO DRY AND BREEZY
CONDITIONS. HOWEVER...RECENT RAINFALL SHOULD KEEP CONDITIONS FROM
REACHING CRITICAL LEVELS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.
THUNDERSTORM CHANCES CONTINUE ACROSS THE SOUTHEAST SECTION OF
NORTH TEXAS TUESDAY AND ACROSS THE NORTHERN AREAS TUESDAY NIGHT
AND WEDNESDAY MORNING. SOME STORMS MAY BECOME SEVERE WITH LARGE
HAIL AND DAMAGING DOWNBURST WINDS.

ELEVATED FIRE WEATHER CONDITIONS ARE LIKELY WEDNESDAY AFTERNOON
ACROSS MOST OF THE REGION.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS LIKELY ALONG AND EAST OF INTERSTATE 35 THIS
AFTERNOON AND TONIGHT.

In the hours before

Local storm report, Apr 25, 5:35 PM CDT, 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
535 PM CDT MON APR 25 2011

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0500 PM     HAIL             PARIS                   33.65N  95.53W
04/25/2011  E0.75 INCH       LAMAR              TX   PUBLIC

            PENNY SIZE HAIL IN PARIS.

Local storm report, Apr 25, 5:41 PM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
541 PM CDT MON APR 25 2011

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0539 PM     HAIL             MOUNT CALM              31.75N  96.88W
04/25/2011  E1.75 INCH       HILL               TX   TRAINED SPOTTER

Local storm report, Apr 25, 5:58 PM CDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
558 PM CDT MON APR 25 2011

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0523 PM     TSTM WND DMG     AVALON                  32.20N  96.78W
04/25/2011                   ELLIS              TX   EMERGENCY MNGR

            ROOF TORE OFF A RESIDENCE AND DAMAGE TO THE AVALON
            SCHOOL.

Local storm report, Apr 25, 6:03 PM CDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
603 PM CDT MON APR 25 2011

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0600 PM     TSTM WND DMG     3 W EMHOUSE             32.17N  96.63W
04/25/2011                   NAVARRO            TX   EMERGENCY MNGR

            NUMEROUS TREES DOWN AND STRUCTURE DAMAGE WEST OF EMHOUSE
            ON FM1126.

Local storm report, Apr 25, 6:04 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
604 PM CDT MON APR 25 2011

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0603 PM     HAIL             CORSICANA               32.10N  96.47W
04/25/2011  E1.75 INCH       NAVARRO            TX   EMERGENCY MNGR

            GOLFBALL SIZE HAIL IN CORSICANA.

Local storm report, Apr 25, 6:11 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
611 PM CDT MON APR 25 2011

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0606 PM     FLASH FLOOD      2 WSW CORSICANA         32.09N  96.50W
04/25/2011                   NAVARRO            TX   TRAINED SPOTTER

            SPOTTER NEAR CORSICANA REPORTS WATER COVERING MANY ROADS
            UP TO 1 FT DEEP IN SPOTS AND IN RESIDENTIAL AREAS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 7:10 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Cooke, Denton, Grayson, Tarrant	50 min
Apr 24, 7:16 PM CDT	Special Weather Statement	FWD	Dallas	29 min
Apr 24, 7:21 PM CDT	Severe Thunderstorm Warning	FWD	Eastland, Stephens	39 min
Apr 24, 7:30 PM CDT	Special Weather Statement	FWD	Dallas	30 min
Apr 24, 7:43 PM CDT	Severe Thunderstorm Warning	FWD	Eastland, Erath, Hood, Palo Pinto, Parker	62 min
Apr 24, 7:48 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Fannin, Grayson, Hunt	42 min
Apr 24, 8:25 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Delta, Fannin, Hunt, Lamar	50 min
Apr 24, 8:43 PM CDT	Severe Thunderstorm Warning	FWD	Erath, Hood, Johnson, Parker, Tarrant	62 min
Apr 24, 8:44 PM CDT	Severe Thunderstorm Warning	FWD	Comanche, Eastland	46 min
Apr 24, 8:49 PM CDT	Special Weather Statement	FWD	Lamar	26 min
Apr 24, 9:16 PM CDT	Special Weather Statement	FWD	Lamar	29 min
Apr 24, 9:22 PM CDT	Tornado Warning	FWD	Comanche, Eastland	38 min
Apr 24, 9:34 PM CDT	Severe Thunderstorm Warning	FWD	Dallas, Ellis, Johnson, Tarrant	56 min
Apr 24, 9:36 PM CDT	Areal Flood Advisory	FWD	Lamar	3 hr
Apr 24, 9:41 PM CDT	Severe Thunderstorm Warning	FWD	Hood, Parker	34 min
Apr 24, 9:57 PM CDT	Severe Thunderstorm Warning	FWD	Comanche	48 min
Apr 24, 10:15 PM CDT	Special Weather Statement	FWD	Jack, Palo Pinto	30 min
Apr 24, 10:22 PM CDT	Severe Thunderstorm Warning	FWD	Comanche, Erath	38 min
Apr 24, 10:25 PM CDT	Severe Thunderstorm Warning	FWD	Comanche	50 min
Apr 24, 10:27 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Dallas, Hunt, Kaufman, Rockwall	48 min
Apr 24, 10:31 PM CDT	Severe Thunderstorm Warning	FWD	Palo Pinto, Parker	59 min
Apr 24, 10:37 PM CDT	Special Weather Statement	FWD	Jack	23 min
Apr 24, 10:57 PM CDT	Severe Thunderstorm Warning	FWD	Erath	63 min
Apr 24, 11:11 PM CDT	Severe Thunderstorm Warning	FWD	Comanche	64 min
Apr 24, 11:14 PM CDT	Severe Thunderstorm Warning	FWD	Delta, Hopkins, Hunt	61 min
Apr 24, 11:28 PM CDT	Severe Thunderstorm Warning	FWD	Parker, Tarrant	47 min
Apr 25, 12:09 AM CDT	Severe Thunderstorm Warning	FWD	Comanche, Erath, Hamilton	51 min
Apr 25, 12:18 AM CDT	Special Weather Statement	FWD	Young	27 min
Apr 25, 12:26 AM CDT	Severe Thunderstorm Warning	FWD	Young	49 min
Apr 25, 12:58 AM CDT	Severe Thunderstorm Warning	FWD	Hamilton	47 min
Apr 25, 1:13 AM CDT	Severe Thunderstorm Warning	FWD	Jack, Stephens, Young	62 min
Apr 25, 1:56 AM CDT	Severe Thunderstorm Warning	FWD	Jack, Montague, Wise	64 min
Apr 25, 2:00 AM CDT	Special Weather Statement	FWD	Comanche	30 min
Apr 25, 2:07 AM CDT	Special Weather Statement	FWD	Parker	23 min
Apr 25, 2:23 AM CDT	Severe Thunderstorm Warning	FWD	Parker	37 min
Apr 25, 2:29 AM CDT	Special Weather Statement	FWD	Comanche	31 min
Apr 25, 2:40 AM CDT	Special Weather Statement	FWD	Cooke	35 min
Apr 25, 2:56 AM CDT	Severe Thunderstorm Warning	FWD	Wise	49 min
Apr 25, 3:02 AM CDT	Special Weather Statement	FWD	Tarrant	28 min
Apr 25, 3:12 AM CDT	Special Weather Statement	FWD	Hood	33 min
Apr 25, 3:17 AM CDT	Special Weather Statement	FWD	Grayson	28 min
Apr 25, 3:21 AM CDT	Severe Thunderstorm Warning	FWD	Denton, Tarrant	54 min
Apr 25, 4:14 AM CDT	Special Weather Statement	FWD	Lamar	31 min
Apr 25, 4:16 AM CDT	Special Weather Statement	FWD	Tarrant	29 min
Apr 25, 4:20 AM CDT	Severe Thunderstorm Warning	FWD	Tarrant	55 min
Apr 25, 4:39 AM CDT	Special Weather Statement	FWD	Johnson	36 min
Apr 25, 4:40 AM CDT	Severe Thunderstorm Warning	FWD	Dallas	40 min
Apr 25, 5:02 AM CDT	Special Weather Statement	FWD	Ellis	28 min
Apr 25, 5:32 AM CDT	Special Weather Statement	FWD	Kaufman	28 min
Apr 25, 6:08 AM CDT	Special Weather Statement	FWD	Rains	37 min
Apr 25, 10:32 AM CDT	Severe Thunderstorm Warning	FWD	Collin, Dallas, Kaufman, Rockwall	58 min
Apr 25, 10:54 AM CDT	Severe Thunderstorm Warning	FWD	Delta, Lamar	66 min
Apr 25, 11:00 AM CDT	Severe Thunderstorm Warning	FWD	Collin, Fannin, Hunt	60 min
Apr 25, 11:13 AM CDT	Special Weather Statement	FWD	Ellis	32 min
Apr 25, 11:42 AM CDT	Special Weather Statement	FWD	Tarrant	33 min
Apr 25, 12:06 PM CDT	Special Weather Statement	FWD	Rockwall	24 min
Apr 25, 12:23 PM CDT	Special Weather Statement	FWD	Delta, Hopkins, Hunt, Lamar	37 min
Apr 25, 12:28 PM CDT	Special Weather Statement	FWD	Rains	32 min
Apr 25, 12:56 PM CDT	Special Weather Statement	FWD	Montague	34 min
Apr 25, 12:58 PM CDT	Severe Thunderstorm Warning	FWD	Hopkins, Hunt, Rains	62 min
Apr 25, 1:12 PM CDT	Flash Flood Warning	FWD	Delta, Lamar	2 hr
Apr 25, 1:13 PM CDT	Special Weather Statement	FWD	Erath	32 min
Apr 25, 1:19 PM CDT	Severe Thunderstorm Warning	FWD	Erath	56 min
Apr 25, 1:25 PM CDT	Severe Thunderstorm Warning	FWD	Cooke, Montague	65 min
Apr 25, 1:32 PM CDT	Special Weather Statement	FWD	Lamar	28 min
Apr 25, 1:43 PM CDT	Special Weather Statement	FWD	Freestone	32 min
Apr 25, 1:47 PM CDT	Severe Thunderstorm Warning	FWD	Cooke, Montague	58 min
Apr 25, 1:48 PM CDT	Severe Thunderstorm Warning	FWD	Hood, Johnson, Somervell	57 min
Apr 25, 1:49 PM CDT	Severe Thunderstorm Warning	FWD	Wise	56 min
Apr 25, 1:53 PM CDT	Severe Thunderstorm Warning	FWD	Anderson, Freestone, Henderson, Navarro	67 min
Apr 25, 1:56 PM CDT	Tornado Warning	FWD	Erath, Hood, Somervell	49 min
Apr 25, 2:06 PM CDT	Special Weather Statement	FWD	Freestone	24 min
Apr 25, 2:14 PM CDT	Special Weather Statement	FWD	Van Zandt	31 min
Apr 25, 2:18 PM CDT	Severe Thunderstorm Warning	FWD	Freestone, Limestone	42 min
Apr 25, 2:28 PM CDT	Severe Thunderstorm Warning	FWD	Denton	62 min
Apr 25, 2:31 PM CDT	Severe Thunderstorm Warning	FWD	Cooke, Grayson	59 min
Apr 25, 2:38 PM CDT	Tornado Warning	FWD	Bosque, Hill, Hood, Johnson, Somervell	52 min
Apr 25, 2:57 PM CDT	Severe Thunderstorm Warning	FWD	Anderson, Henderson	33 min
Apr 25, 3:00 PM CDT	Severe Thunderstorm Warning	FWD	Anderson, Freestone	45 min
Apr 25, 3:20 PM CDT	Tornado Warning	FWD	Anderson	40 min

Nearby

Flash Flood Warnings in Texas, 2011 Every flash flood warning in 2011

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.