Severe Thunderstorm Warning 244, NWS Des Moines, IA

616 
WWUS53 KDMX 041940
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
240 PM CDT FRI OCT 4 2013

IAC015-153-169-042030-
/O.CON.KDMX.SV.W.0244.000000T0000Z-131004T2030Z/
STORY IA-POLK IA-BOONE IA-
240 PM CDT FRI OCT 4 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
BOONE...NORTHWESTERN POLK AND STORY COUNTIES UNTIL 330 PM CDT...

AT 237 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MADRID...AND
MOVING NORTHEAST AT 35 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  SLATER AND ALLEMAN AROUND 245 PM CDT.
  HUXLEY AND KELLEY AROUND 250 PM CDT.
  AMES AIRPORT AROUND 255 PM CDT.
  CAMBRIDGE AROUND 300 PM CDT.
  NEVADA AND MAXWELL AROUND 310 PM CDT.
  COLO AROUND 320 PM CDT.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 99 AND 120.

AT 234 PM...TRAINED WEATHER SPOTTERS REPORTED PENNY SIZE HAIL 3 
MILES SOUTH OF WOODWARD...IN DALLAS COUNTY...WITH THIS STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4191 9323 4183 9347 4178 9382 4186 9382
      4186 9386 4188 9387 4221 9344 4220 9323
TIME...MOT...LOC 1939Z 239DEG 29KT 4185 9373

HAIL...1.00IN
WIND...<50MPH

$$

JUNGBLUTH

089 
WWUS53 KDMX 041953
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
253 PM CDT FRI OCT 4 2013

IAC015-153-042002-
/O.CAN.KDMX.SV.W.0244.000000T0000Z-131004T2030Z/
POLK IA-BOONE IA-
253 PM CDT FRI OCT 4 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BOONE AND
NORTHWESTERN POLK COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4191 9323 4188 9333 4188 9369 4201 9370
      4210 9348 4214 9323
TIME...MOT...LOC 1952Z 238DEG 31KT 4192 9360

$$

IAC169-042030-
/O.CON.KDMX.SV.W.0244.000000T0000Z-131004T2030Z/
STORY IA-
253 PM CDT FRI OCT 4 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL STORY
COUNTY UNTIL 330 PM CDT...

AT 251 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR HUXLEY...AND
MOVING NORTHEAST AT 35 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  NEVADA AROUND 310 PM CDT.
  COLO AROUND 320 PM CDT.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 104 AND 116.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4191 9323 4188 9333 4188 9369 4201 9370
      4210 9348 4214 9323
TIME...MOT...LOC 1952Z 238DEG 31KT 4192 9360

HAIL...1.00IN
WIND...<50MPH

$$

JUNGBLUTH

452 
WWUS53 KDMX 042006
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
306 PM CDT FRI OCT 4 2013

IAC169-042015-
/O.CAN.KDMX.SV.W.0244.000000T0000Z-131004T2030Z/
STORY IA-
306 PM CDT FRI OCT 4 2013

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL STORY COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED. SMALL HAIL IS 
STILL POSSIBLE NEAR NEVADA UNTIL 315 PM.

SEVERE WEATHER MAY REDEVELOP THIS EVENING...SO REMAIN ALERT TO 
CHANGING WEATHER CONDITIONS.

LAT...LON 4191 9323 4188 9333 4188 9369 4201 9370
      4210 9348 4214 9323
TIME...MOT...LOC 2005Z 231DEG 33KT 4202 9347

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
1235 PM CDT FRI OCT 4 2013

.SHORT TERM.../TODAY AND TONIGHT/...
ISSUED AT 407 AM CDT FRI OCT 4 2013

THE LOW LEVEL JET WILL GRADUALLY WEAKEN THIS MORNING WHILE THE
INSTABILITY SHIFTS NORTH THIS MORNING. THE FRONTAL BOUNDARY HAS
SUNK INTO CENTRAL IOWA THOUGH THE SFC IS CURRENTLY CHAOTIC AND
CONVECTIVELY CONTAMINATED. THE SOUTHERN END OF THE BOUNDARY IS
QUITE SHALLOW AND IT SHOULD BEGIN TO LIFT BACK NORTH THROUGH THE
DAY. IN ADDITION TO THE WIDESPREAD THUNDERSTORM ACTIVITY ACROSS
IOWA...A LARGE ACCAS FIELD HAS DEVELOPED OVER EASTERN KANSAS AND
IS LIFTING TOWARDS THE STATE. THE PRIMARY THUNDERSTORM ACTIVITY
THROUGH MID AFTERNOON IS ANTICIPATED ALONG AND NORTH OF THE WARM
FRONT AND BE MOSTLY ELEVATED. SOME CONVECTIVE ELEMENTS ALSO LIKELY
TO REMAIN IN THE WARM SECTOR THROUGH THIS TIME. A FEW SEVERE
STORMS ARE POSSIBLE THROUGH 21Z WITH QUARTER SIZED HAIL AND 60 MPH
WINDS THE PRIMARY THREATS.

THE MAIN UPPER LEVEL WAVE AND DRY SLOT WILL APPROACH THE WESTERN
FORECAST AREA AROUND 00Z OR SHORTLY AFTER. SFC LOW PRESSURE WILL
HAVE LIFTED INTO NORTHEAST NEBRASKA BY THIS TIME WITH THE BOUNDARY
ENTERING THE WESTERN PORTION OF THE STATE AND THE TRIPLE POINT
OVER WEST CENTRAL TO NORTHWEST IOWA. SFC BASED CAPES OF 1500-2500
J/KG ARE POSSIBLE OVER THE SOUTHWEST HALF OF IOWA BY 00Z AND WILL
HELP FUEL THUNDERSTORM DEVELOP AS THE AFOREMENTIONED DYNAMICS
ARRIVE. CONDITIONS WILL BE FAVORABLE FOR SUPERCELL DEVELOPMENT
WITH DEEP LAYER SHEAR OF 40-50 KTS. LOW LEVEL SRH VALUES OF
250-350 M2/S2 ARE LIKELY NEAR THE TRIPLE POINT REGION AND THIS
WOULD BE THE MOST FAVORED REGION FOR TORNADIC SUPERCELLS. IN
ADDITION VERY LARGE HAIL TO 2 INCHES IN DIAMETER AND WIND GUSTS TO
70 MPH ARE ALSO LIKELY WITH THE STRONGEST STORMS. THE TORNADO
THREAT IS NOT ANTICIPATED TO BE AS GREAT FARTHER SOUTH ALONG THE
COLD FRONT WITH LOWER 0-1 KM SRH VALUES. HOWEVER STILL LIKELY TO
HAVE A FEW SUPERCELLS EARLY TRANSITIONING TO POTENTIAL LEWP
SEGMENTS OR A LINE WITH EMBEDDED SHALLOW MESOVORTICES WITH
FOCUSED AREAS FOR DAMAGING WINDS TO 70 MPH OR MORE IN ADDITION TO
A LARGE HAIL THREAT. THIS LINE WOULD ARRIVE FROM AMES TO DES
MOINES TO LAMONI FROM 03Z-06Z. THE SEVERE THREAT WILL DIMINISH
AFTER 06Z AS THE THUNDERSTORMS SHIFT OFF TO THE EAST. CERTAINLY AN
VERY ACTIVE OCTOBER DAY IS ANTICIPATED WITH THE SEVERE THREAT
CONDITIONAL ON CLOUD COVER WHICH IF BECOMES MORE WIDESPREAD THAN
EXPECTED WITHIN THE WARM SECTOR WOULD LIMIT POTENTIAL.

.LONG TERM.../SATURDAY THROUGH THURSDAY/...
ISSUED AT 407 AM CDT FRI OCT 4 2013

STORMS WILL LINGER SATURDAY MORNING OVER THE EAST THEN MUCH OF THE
DAY WILL BECOME DRY AND BREEZY WITH STEADY TO FALLING TEMPERATURES
WITH THE BOUNDARY PASSAGE. FINALLY GOOD AGREEMENT ON THE
EVOLUTION OF THE UPPER LOW WITH THE NAM BEING THE LAST TO JOIN THE
PARTY. THE UPPER LOW WILL PASS ACROSS IOWA SATURDAY NIGHT
AND SUNDAY. AN ATTENDANT SHOWER THREAT AND WRAP AROUND STRATUS WILL
ACCOMPANY THE SYSTEM BEFORE IT PASSES OFF TO THE EAST. WARM
ADVECTION WILL RETURN BY EARLY NEXT WEEK THEN THE UPPER FLOW WILL
AGAIN TRANSITION TO SOUTHWESTERLY FLOW AS ANOTHER POTENT UPPER LOW
DIVES INTO THE CALIFORNIA AND NEVADA REGION BY MID NEXT WEEK. THIS
WILL BRING DRY AND MILD CONDITIONS THROUGH THAT TIME.

&&

.AVIATION...04/18Z
ISSUED AT 1230 PM CDT FRI OCT 4 2013

CEILINGS HAVE LIFTED ACROSS SITES...WITH VFR CONDITIONS PREVAILING.
AREAS OF SHOWERS WILL CONTINUE TO AFFECT SOUTHERN
SITES...KDSM/KALO/KOTM THROUGH 00Z. THUNDERSTORMS WILL DEVELOP
ACROSS THE WEST PUSHING EASTWARD AROUND 00Z. TSRA MAY AFFECT
SITES...WITH IFR CONDITIONS AT TIMES. SYSTEM WILL PUSH QUICKLY
EAST...WITH ONLY SMALL WINDOW TO AFFECT SITES...HOWEVER LINGERING
LOW CEILINGS AND VISIBILITIES MAY AFFECT SITES...WITH IFR OR LIFR
CONDITIONS POSSIBLE...MOSTLY LIFTING BY 12Z. WINDS WILL SHIFT TO
THE WEST/SOUTHWEST BEHIND SYSTEM.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...NONE.

&&

SHORT TERM...DONAVON
LONG TERM...DONAVON
AVIATION...AWB

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
1209 PM CDT FRI OCT 4 2013

IAZ015-023-024-033>036-044>048-057>061-070>074-081>084-092>095-
051100-
PALO ALTO-POCAHONTAS-HUMBOLDT-SAC-CALHOUN-WEBSTER-HAMILTON-CRAWFORD-
CARROLL-GREENE-BOONE-STORY-AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-CASS-
ADAIR-MADISON-WARREN-MARION-ADAMS-UNION-CLARKE-LUCAS-TAYLOR-RINGGOLD-
DECATUR-WAYNE-
1209 PM CDT FRI OCT 4 2013

...TORNADOES POSSIBLE BY LATE AFTERNOON AND EARLY THIS EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND
WESTERN IOWA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A MODERATE RISK FOR SEVERE WEATHER LATE THIS AFTERNOON THROUGH
THE EVENING. ISOLATED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON
WITH QUARTER SIZED HAIL AND 60 MPH WINDS POSSIBLE. MORE SIGNIFICANT
SEVERE STORMS ARE THEN POSSIBLE LATER TODAY DURING THE MODERATE
RISK TIME FRAME. VERY LARGE HAIL...GOLF BALL SIZED OR LARGER...70
MPH WINDS AND TORNADOES ARE ALL POSSIBLE. A STRONG TORNADO MAY
OCCUR.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY LATER THIS AFTERNOON AND INTO THE
EVENING HOURS.

IAZ004>007-016-017-025>028-037>039-049-050-062-075-085-086-096-097-
051100-
EMMET-KOSSUTH-WINNEBAGO-WORTH-HANCOCK-CERRO GORDO-WRIGHT-FRANKLIN-
BUTLER-BREMER-HARDIN-GRUNDY-BLACK HAWK-MARSHALL-TAMA-POWESHIEK-
MAHASKA-MONROE-WAPELLO-APPANOOSE-DAVIS-
1209 PM CDT FRI OCT 4 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND
EASTERN IOWA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE THROUGH MID AFTERNOON
TODAY WITH QUARTER SIZED HAIL AND 60 MPH WINDS. A GREATER RISK FOR
SEVERE WEATHER IS EXPECTED AFTER 5 PM THROUGH MIDNIGHT AS A LINE
OF STORMS DEVELOPS OVER WESTERN IOWA AND RACES EAST THROUGH THE
EVENING. HALF DOLLAR SIZED HAIL...65 MPH WINDS AND AN ISOLATED
TORNADO OR TWO MAY OCCUR WITH THIS ACTIVITY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A FEW THUNDERSTORMS ARE POSSIBLE OVER EASTERN IOWA SATURDAY
MORNING...BUT SEVERE WEATHER IS NOT ANTICIPATED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE POSSIBLE THIS AFTERNOON...BUT LIKELY
FOR A PERIOD THIS EVENING.

SMALL

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
904 AM CDT FRI OCT 4 2013

IAZ062-075-041500-
MAHASKA-POWESHIEK-
904 AM CDT FRI OCT 4 2013

THUNDERSTORMS WITH GUSTY WINDS WILL MOVE EAST AT 30 MPH THROUGH
PORTIONS OF MAHASKA AND POWESHIEK COUNTIES UNTIL 10 AM.

WINDS GREATER THAN 40 MPH...ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
  NEW SHARON...         BEACON...             UNIVERSITY PARK...
  OSKALOOSA...          MALCOM...             MONTEZUMA...
  OSKALOOSA AIRPORT...  KEOMAH VILLAGE...     BARNES CITY...
  ROSE HILL...          GUERNSEY...           FREMONT...
  DEEP RIVER...

GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND. SEEK SHELTER INDOORS UNTIL THESE STORMS HAVE PASSED.

JUNGBLUTH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1004 AM CDT FRI OCT 04 2013

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

0730 AM     TSTM WND DMG     DALLAS CENTER           41.68N 93.98W
10/04/2013                   DALLAS             IA   AMATEUR RADIO

            POWER LINE BLOWN OFF INSULATORS AND STARTED A FIRE. TIME
            ESTIMATED FROM RADAR.

&&

AWB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1011 AM CDT FRI OCT 04 2013

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

0725 AM     TSTM WND DMG     W MONROE                41.52N 93.10W
10/04/2013                   JASPER             IA   LAW ENFORCEMENT

            LARGE TREE DOWN HIGHWAY F90

&&

DEROY

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1249 PM CDT FRI OCT 4 2013

IAZ071-041815-
ADAIR-
1249 PM CDT FRI OCT 4 2013

...SPECIAL WEATHER STATEMENT...

AT 1245 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER SOUTH CENTRAL ADAIR COUNTY...MOVING
NORTHEAST AT 45 MPH.

ONE HALF INCH DIAMETER HAIL...WINDS GREATER THAN 30 MPH...ARE
POSSIBLE WITH THIS STORM. EXPECT THE STORM TO MOVE THROUGH
GREENFIELD AROUND 1 PM.

LOCATIONS IMPACTED INCLUDE...
  GREENFIELD...         ADAIR...              STUART...

GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS
PASSED.

JUNGBLUTH