Alert archive / Mississippi / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 231, NWS Jackson, MS

June 8, 2007Humphreys County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jun 8, 2007, 7:32 PM CDT for Humphreys County, Mississippi. It was in force for 43 min. 1 report 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
Jun 8, 2007, 7:32 PM CDT (00:32 UTC)
Expired
Jun 8, 2007, 8:15 PM CDT
In force
43 min
Issued by
NWS Jackson, MS
Area
Counties, with a storm outline in the text

County Humphreys County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 116 km from the middle of the area, began a volume at 00:33 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

TimeReportWhereRemark
Jun 8, 7:55 PM CDTHAIL 0.25Isola, MS

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

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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

Jackson, MS (KJAN), launched 00:00Z, 0.5 hours before the alert went out and 108 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, Jackson, MS at 00:00Z on 2007-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1304 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, Jackson, MS at 00:00Z on 2007-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 square meters per square second.1939Sfc1 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
1304 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1859 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
-7 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KJAN 090031
SVRJAN
MSC053-090115-
/O.NEW.KJAN.SV.W.0231.070609T0032Z-070609T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
732 PM CDT FRI JUN 8 2007

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HUMPHREYS COUNTY IN CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITY OF BELZONI...

* UNTIL 815 PM CDT

* AT 732 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  ISOLA...OR ABOUT 7 MILES NORTH OF BELZONI...AND MOVING SOUTH AT 20
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BELZONI BY 750 PM CDT...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

HIGH WINDS CAN BRING DOWN TREES AND LARGE LIMBS RESULTING IN SERIOUS
INJURY OR PROPERTY DAMAGE. EXERCISE EXTREME CAUTION WHEN OUTDOORS
DURING SUCH STRONG WINDS...AND BE ESPECIALLY AWARE OF OLDER TREES.

LAT...LON 3325 9043 3334 9046 3328 9062 3326 9074
      3306 9063 3306 9045

$$
1 follow-up statement
000 
WWUS54 KJAN 090054
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
754 PM CDT FRI JUN 8 2007

MSC053-090115-
/O.CON.KJAN.SV.W.0231.000000T0000Z-070609T0115Z/
HUMPHREYS MS-
754 PM CDT FRI JUN 8 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR HUMPHREYS COUNTY...

AT 754 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR
BELZONI...MOVING SOUTH AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  SILVER CITY BY 810 PM CDT...

HIGH WINDS CAN BRING DOWN TREES AND LARGE LIMBS RESULTING IN SERIOUS
INJURY OR PROPERTY DAMAGE. EXERCISE EXTREME CAUTION WHEN OUTDOORS
DURING SUCH STRONG WINDS...AND BE ESPECIALLY AWARE OF OLDER TREES.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS 
IMMEDIATELY 

LAT...LON 3325 9043 3334 9046 3328 9062 3326 9074
      3306 9063 3306 9045

$$

EEC

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 Jackson, MS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 8, 2:48 PM CDT, 4 hours 44 minutes earlier.

Area forecast discussion, Jun 8, 2:48 PM CDT, 4 hours 44 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
245 PM CDT FRIDAY JUN 8 2007

.SHORT TERM...(TONIGHT THROUGH SATURDAY NIGHT)
LATEST SATELLITE IMAGERY SHOWS THE UPPER RIDGE FLUCTUATING SOME AS
AN UPPER TROUGH MOVES THROUGH THE MID TO UPPER MISSISSIPPI VALLEY.
ALSO CLUSTERS OF STRONG THUNDERSTORMS WAS NOTED ALONG A COLD
FRONT...WHICH EXTENDED FROM SOUTHERN ILLINOIS THROUGH SOUTHWEST
ARKANSAS. THIS FRONT WAS APPROACHING NORTHWEST MISSISSIPPI. FOR THE
LOCAL AREA VISIBLE SATELLITE SHOWS THAT THE AIRMASS HAS STABILIZED
SOME ACROSS NORTHEAST LOUISIANA INTO WEST CENTRAL
MISSISSIPPI...POSSIBLY BY A GRAVITY WAVE. ANYHOW THE CONVECTION IS
NOT MAINTAINING ITSELF VERY WELL.  EXPECT THE INSTABILITY TO
RE-ESTABLISH ITSELF FOR THE DEVELOPMENT OF SCATTERED SHOWERS AND
SOME THUNDERSTORMS FOR LATER THIS AFTERNOON INTO EARLY THIS
EVENING./17/

FOR TONIGHT...EXPECT AN OUTFLOW BOUNDARY FROM THE CONVECTION TO THE
NORTHWEST TO AID IN SCATTERED CONVECTIVE COVERAGE. THE SCATTERED
SHOWERS AND THUNDERSTORMS WILL LINGER UNTIL AFTER SUNSET...WHEN THE
HEAT OF THE DAY WILL BE LOST. EXPECT ONLY ISOLATED COVERAGE FOR THIS
EVENING AFTER SUNSET. AFTER MIDNIGHT EXPECT ISOLATED CONVECTION
ACROSS THE NORTH AHEAD OF THE APPROACHING FRONT. PROFILERS SHOW THAT
WINDS WILL BE RATHER LIGHT ACROSS THE REGION...WHICH MAY BRING SOME
PATCHY GROUND FOG. STRATUS SHOULD BE RATHER PATCHY FOR TONIGHT. DO
NOT EXPECT THE WEATHER WATCH TO BE EXTENDED INTO THE REGION FOR
TONIGHT. AS FAR AS TEMPERATURES ARE CONCERN WITH LOWS LAST NIGHT IN
THE UPPER 70S. WILL GO A LITTLE HIGHER THAN MOS GUIDANCE WITH
OVERNIGHT TEMPERATURES...WHICH WILL RANGE FROM THE LOWER TO MIDDLE
70S.

FOR SATURDAY...THE WEAK FRONT WILL SLIDE TO AROUND THE HIGHWAY 82
CORRIDOR. THERE WILL BE ENOUGH INSTABILITY FOR MORE SHOWERS AND
THUNDERSTORMS TO DEVELOP ACROSS THE REGION. THERE WILL BE ENOUGH
INSTABILITY(CAPES OF AROUND 3500 J/KG...MIDLEVEL WINDS AROUND 15
KNOTS) FOR POSSIBLE STRONG TO ISOLATED SEVERE...GENERALLY ALONG
AND NORTH OF THE INTERSTATE CORRIDOR. SEA BREEZE ACTIVITY WILL COME
IN FROM THE SOUTH AND AFFECT MAINLY THE SOUTH PORTIONS OF THE
ARKLAMISS. WILL GO A LITTLE HIGHER THAN MODEL GUIDANCE WITH SCATTERED
POPS. ONCE AGAIN MODELS HAVE SOME RAIN COOLED HIGHS IN THE UPPER 80S IN
SOME LOCATIONS. WILL GO WITH THE CURRENT FORECAST OF LOWER 90S.

FOR SATURDAY NIGHT...THE SURFACE BOUNDARY WILL CONTINUE TO WEAKEN
AS THE ASSOCIATED UPPER TROUGH NORTH OF THE REGION MOVES QUICKLY TO
THE EAST. THIS WILL HELP THE UPPER RIDGE TO REBUILD ITSELF ACROSS
THE ARKLAMISS. SO WILL PUT IN ISOLATED EARLY EVENING POPS. WE WILL
GET SOME LIMITED LOW LEVEL DRYING FROM THE NORTHEAST WITH DEWPOINTS
IN THE MID TO UPPER 60S ACROSS THE NORTHEAST AND EAST./17/

.LONG TERM(SUNDAY THROUGH FRIDAY)...
REMNANTS OF THE BOUNDARY PERSIST INTO THE EXTENDED PERIOD...
PRODUCING A POTENTIAL ZONE OF LOW LEVEL CONVERGENCE OVER SRN ZONES
OVER THE FIRST FEW DAYS OF NEXT WEEK. UPPER RIDGING REMAINS SOLID
ACROSS THE AREA AND MODELS ARE IN AGREEMENT IN ADVECTING DRIER AIR
SWD INTO THE LOWER MS RIVER VALLEY IN NWLY FLOW ON THE LEADING EDGE
OF THE LOWER LEVEL HIGH CENTER. THE AIR MASS IS FORECAST TO REMAIN
RELATIVELY DRY THROUGH WEDNESDAY.

A PATTERN CHANGE IS ADVERTISED FOR THURSDAY AND FRIDAY WHEN RIDGING
IS ERODED BY AN APPROACHING UPPER TROUGH. THE STRONGER PORTION OF
THE TROUGH LIFTS OUT TO THE NORTHEAST AND FORCING AT LOWER LEVELS
REMAINS WEAK THIS FAR SOUTH. SURFACE/850 MB RIDGING REMAINS PERCHED
NEAR THE COAST LINE AND WLY FLOW WILL DOMINATE AT LOWER
LEVELS...LIMITING LOW LEVEL GULF INFLOW. WILL FOLLOW PREVIOUS
FORECAST TREND...KEEPING GENERALLY ISOLATED CONVECTION MAINLY DURING
THE AFTERNOONS.

COOLED OVERNIGHT LOWS SLIGHTLY FOR THE FIRST FEW DAYS OF NEXT WEEK
IN RESPONSE TO SLIGHTLY DRIER AIR MASS. AFTERNOON HIGHS WILL REMAIN
WARM...GENERALLY MID 90S...FOR THE FIRST PART OF NEXT WEEK THEN INTO
THE LOWER 90S THURSDAY AND FRIDAY DUE TO SLIGHTLY LOWER HEIGHTS.

&&

.PRELIMINARY POINT TEMPS/POPS...
JACKSON       74  93  71  94 /  24  46  20  16
MERIDIAN      73  93  68  94 /  25  48  20  16
VICKSBURG     75  93  72  95 /  27  41  20  17
HATTIESBURG   75  93  71  94 /  22  57  20  16
NATCHEZ       74  91  72  92 /  24  47  20  16
GREENVILLE    75  92  70  93 /  37  36  20  17
GREENWOOD     74  92  70  92 /  33  38  20  16

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...NONE.

LA...NONE.

AR...NONE.

&&
Hazardous weather outlook, Jun 8, 1:17 PM CDT, 6 hours 15 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
117 PM CDT FRI JUN 8 2007

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
091830-
ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND-
MADISON-FRANKLIN-CATAHOULA-TENSAS-CONCORDIA-BOLIVAR-SUNFLOWER-
LEFLORE-GRENADA-CARROLL-MONTGOMERY-WEBSTER-CLAY-LOWNDES-CHOCTAW-
OKTIBBEHA-WASHINGTON-HUMPHREYS-HOLMES-ATTALA-WINSTON-NOXUBEE-
ISSAQUENA-SHARKEY-YAZOO-LEAKE-NESHOBA-KEMPER-WARREN-HINDS-RANKIN-
SCOTT-NEWTON-LAUDERDALE-CLAIBORNE-COPIAH-SIMPSON-SMITH-JASPER-
CLARKE-JEFFERSON-ADAMS-LINCOLN-LAWRENCE-JEFFERSON DAVIS-COVINGTON-
JONES-MARION-LAMAR-FORREST-
117 PM CDT FRI JUN 8 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI...
NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS.

.DAY ONE...TONIGHT AND SATURDAY
ISOLATED STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE THROUGH
EARLY THIS EVENING ACROSS THE NORTHWEST DELTA REGION OF THE
ARKLAMISS. THIS WILL BE FOR MAINLY AREAS ALONG AND NORTHWEST OF A
LINE FROM RAYVILLE LOUISIANA TO GREENWOOD AND GRENADA MISSISSIPPI.

A VERY MOIST AIRMASS WILL COMBINE WITH TEMPERATURES IN THE LOWER TO
MIDDLE 90S AND SUPPORT HIGH LEVELS OF INSTABILITY ACROSS THE AREA. A
WEAK FRONT WILL APPROACH THE NORTHWEST PORTION OF THE AREA AND
INCREASE LOW LEVEL CONVERGENCE. THIS WILL ASSIST IN ORGANIZING
THUNDERSTORMS ACROSS THE NORTHWEST LOCATIONS OF WHICH A FEW MAY
BECOME STRONG TO SEVERE. SMALL HAIL AND DAMAGING WINDS WILL BE THE
MAIN CONCERN.

FOR SATURDAY...THE WEAK FRONT WILL BE LOCATED CLOSE TO THE HIGHWAY 82
CORRIDOR. THE FRONT WILL AGAIN HELP TO FOCUS LOW LEVEL MOISTURE AND
WHEN COMBINED WITH DAY TIME HEATING...THUNDERSTORMS ARE EXPECTED TO
FIRE ALONG AND AHEAD OF THE FRONT. INSTABILITY WILL AGAIN BE
SUFFICIENT TO SUPPORT ISOLATED SEVERE THUNDERSTORMS...MAINLY FOR
AREAS ALONG AND NORTH OF I-20. SMALL HAIL AND DAMAGING WINDS WILL BE
THE MAIN FOCUS AS CLUSTERS OF STORMS MOVE TO THE SOUTH AND SOUTHEAST
DURING THE AFTERNOON.

.DAYS TWO THROUGH SEVEN...SATURDAY NIGHT THROUGH FRIDAY
NO HAZARDOUS WEATHER IS EXPECTED.

.SPOTTER CALL TO ACTION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER
OPERATIONS...MAY BE NEEDED ON SATURDAY FOR THE NORTH HALF OF THE
REGION. OTHERWISE NO ACTIVATION WILL BE NEEDED THROUGH NEXT FRIDAY
JUNE 15.

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.SRH.NOAA.GOV/JAN. THIS INCLUDES THE GRAPHICAL HAZARDOUS
WEATHER OUTLOOK.

17

In the hours before

Special weather statement, Jun 8, 5:22 PM CDT, 2 hours 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
522 PM CDT FRI JUN 8 2007

MSZ066-082250-
JONES MS-
522 PM CDT FRI JUN 8 2007

...INTENSE THUNDERSTORM OVER NORTHEAST JONES COUNTY...

A STRONG THUNDERSTORM CAPABLE OF PRODUCING 40 TO 50 MPH WINDS WAS
NEARLY STATIONARY 6 MILES NORTH OF MILL CREEK AT 522 PM CDT...AND IT
IS EXPECTED TO CONTINUE TO AFFECT LOCATIONS IN NORTHEAST JONES
COUNTY THROUGH 550 PM. IN ADDITION TO GUSTY WINDS...THIS STORM ALSO
HAS THE POTENTIAL TO PRODUCE PEA TO DIME SIZE HAIL...FREQUENT
LIGHTNING AND TORRENTIAL DOWNPOURS.

HIGH WINDS CAN BRING DOWN TREES AND LARGE LIMBS RESULTING IN SERIOUS
INJURY OR PROPERTY DAMAGE. EXERCISE EXTREME CAUTION WHEN OUTDOORS
DURING SUCH STRONG WINDS...AND BE ESPECIALLY AWARE OF OLDER TREES.

PEOPLE IN JONES COUNTY SHOULD MONITOR THIS STORM CLOSELY.

BYB
Special weather statement, Jun 8, 5:34 PM CDT, 1 hour 58 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
534 PM CDT FRI JUN 8 2007

MSZ018-019-025>027-034>036-082315-
BOLIVAR MS-SUNFLOWER MS-GRENADA MS-LEFLORE MS-CARROLL MS-
WASHINGTON MS-HOLMES MS-HUMPHREYS MS-
534 PM CDT FRI JUN 8 2007

...STORMS GAINING STRENGTH OVER NORTHWEST MISSISSIPPI...
A DEVELOPING LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM 27 MILES
NORTH OF HOLCOMB TO 5 MILES SOUTHWEST OF LELAND AT 534 PM
CDT...MOVING SOUTHEAST AT 25 TO 30 MPH.

VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE
ALSO POSSIBLE WITH THESE STORMS AS THEY MOVE TOWARD
GRENADA...GREENWOOD AND LEXINGTON MISSISSIPPI OVER THE NEXT HOUR.

THESE STORMS ARE INTENSIFYING AND COULD BECOME SEVERE RAPIDLY.

PEOPLE IN BOLIVAR...CARROLL...GRENADA...HOLMES...HUMPHREYS...
LEFLORE...SUNFLOWER AND WASHINGTON COUNTIES...SHOULD MONITOR THESE
STORMS CLOSELY.

BYB
Special weather statement, Jun 8, 6:50 PM CDT, 42 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
650 PM CDT FRI JUN 8 2007

MSZ019-025-027-035-036-090045-
SUNFLOWER MS-LEFLORE MS-CARROLL MS-HOLMES MS-HUMPHREYS MS-
650 PM CDT FRI JUN 8 2007

...STRONG THUNDERSTORMS AFFECTING PORTIONS OF NORTH CENTRAL
MISSISSIPPI...

STRONG STORMS CAPABLE OF PRODUCING 35 TO 45 MPH WINDS AND PEA SIZE
HAIL WERE LOCATED FROM NEAR INDIANOLA TO ITTA BENA TO GREENWOOD AT
650 PM CDT...MOVING SOUTHEAST AT 10 MPH. VERY HEAVY RAIN ALONG WITH
CONTINUOUS CLOUD TO GROUND LIGHTNING ARE ALSO OCCURRING WITH THESE
STORMS.

THE STORMS WILL CONTINUE TO AFFECT THE SAME GENERAL AREA UNTIL
SUNSET...EVENTUALLY MOVING INTO NORTHERN HUMPHREYS AND NORTHWEST
HOLMES COUNTIES. LOOK FOR THE STORMS TO DIMINISH AFTER SUNSET.

HIGH WINDS CAN BRING DOWN TREES AND LARGE LIMBS RESULTING IN SERIOUS
INJURY OR PROPERTY DAMAGE. EXERCISE EXTREME CAUTION WHEN OUTDOORS
DURING SUCH STRONG WINDS...AND BE ESPECIALLY AWARE OF OLDER TREES.

PEOPLE IN WESTERN CARROLL...NORTHWEST HOLMES...NORTHERN
HUMPHREYS...LEFLORE AND SUNFLOWER COUNTIES...INCLUDING THE CITIES OF
GREENWOOD...INDIANOLA...ITTA BENA AND MOORHEAD...SHOULD KEEP CLOSE
TO SAFE SHELTER.

EEC

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 8, 7:00 PM CDTSevere Thunderstorm WarningJANSunflower45 min
Jun 8, 7:05 PM CDTSevere Thunderstorm WarningJANSmith40 min
Jun 9, 1:31 PM CDTSevere Thunderstorm WarningJANLamar59 min
Jun 9, 2:04 PM CDTSevere Thunderstorm WarningJANForrest26 min
Jun 9, 4:26 PM CDTSevere Thunderstorm WarningJANJefferson Davis, Marion34 min
Jun 9, 6:32 PM CDTSevere Thunderstorm WarningJANAdams43 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2007Every severe thunderstorm warning in 2007

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.