Alert archive / Iowa / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 26, NWS Des Moines, IA

March 30, 2005Jasper County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Mar 30, 2005, 2:36 PM CST for Jasper County, Iowa. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 30, 2005, 2:36 PM CST (20:36 UTC)
Expired: Mar 30, 2005, 3:00 PM CST
In force: 24 min
Issued by: NWS Des Moines, IA
Area: Counties, with a storm outline in the text

County Jasper County, IA

The radar

The Des Moines radar (KDMX), 57 km from the middle of the area, began a volume at 20:36 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.

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

Davenport, (KDVN), launched 12:00Z, 8.6 hours before the alert went out and 211 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1316 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 140 m²/s²
0-3 km storm-relative helicity: 316 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KDMX 302037
SVRDMX
IAC099-302100-
/O.NEW.KDMX.SV.W.0026.050330T2036Z-050330T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
236 PM CST WED MAR 30 2005

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN JASPER COUNTY IN CENTRAL IOWA.

* UNTIL 300 PM CST.

* AT 232 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  NEWTON...OR 34 MILES EAST OF DES MOINES...AND MOVING NORTHEAST AT
  35 MPH.

* THE SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
  NORTHEASTERN JASPER COUNTY...INCLUDING THE LOCATION OF KELLOGG.

A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 800 PM CST WEDNESDAY 
EVENING FOR NORTHEASTERN IOWA.

MOVE TO AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS. IF YOU LIVE IN A
MOBILE HOME...SEEK SHELTER IN A STURDY BUILDING.

LAT...LON 4173 9318 4162 9310 4171 9279 4185 9280
      4185 9318

$$

DONAVON

1 follow-up statement

000 
WWUS53 KDMX 302059
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
258 PM CST WED MAR 30 2005

IAC099-302108-
/O.EXP.KDMX.SV.W.0026.000000T0000Z-050330T2100Z/
JASPER IA-
258 PM CST WED MAR 30 2005

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JASPER COUNTY HAS
BEEN ALLOWED TO EXPIRE...

AT 253 PM CST...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO
EXPIRE.

THE STORM PRODUCED PEA TO DIME SIZED HAIL NEAR GILMAN.

IF SEVERE WEATHER WAS OBSERVED...CONTACT THE NATIONAL WEATHER SERVICE
OFFICE IN DES MOINES AT 1-800-759-9276.

LAT...LON 4173 9318 4162 9310 4171 9279 4185 9280
      4185 9318

$$

VACHALEK

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 Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 30, 3:34 AM CST, 11 hours 2 minutes earlier.

Area forecast discussion, Mar 30, 3:34 AM CST, 11 hours 2 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
334 AM CST WED MAR 30 2005

.DISCUSSION...
PRIMARY CONCERN WL BE CONVECTIVE TRENDS AND SVR POTENTIAL TDA
FOLLOWED BY WND AND LINGERING PCPN TNGT.  CURRENT SITUATION HAS
POTENT SHRT WV LIFTING ACRS KS WITH 110+KT SPEED MAX ROUNDING TROF
INTO OH VLY.  UPR LVL DVRG AHD OF TROF AND IN LEFT EXIT RGN OF JET
SEGMENT AIDING UVM ACRS MO RVR VLY.  XPC CONVECTION TO CONT
EXPANDING THIS MRNG ACRS IA.  FIRST AREA OF CONCERN WL BE WRN SXNS.
QG FORCING MAX OVR NE AND LOBE INTO MO WL LIFT INTO IA SHRTLY ALG
WITH NEGATIVE H7/H5 THETA-E LAPSE RATES ADVECTING NWD AS WELL.  SOME
THETA-E ADVCTN FM SIOUXLAND INTO MN...BUT MOST OF FORCING APPRS TO
BE KINEMATIC AND ASSOCD WITH STG FRONTOGENETICAL RESPONSE AREA ON
ERN FRINGE OF DEFORMATION ZN.  THIS PCPN AREA SHOULD EXPAND AND WORK
ITS WAY EWD ACRS NWRD 2/3RDS OF IA TDA.

LOOKING FOR RAPID CONVECTIVE DVLPMT FARTHER E THIS MRNG.  08Z SFC
ANLYS PLACES SFC LOW BTWN KRSL-KSLN AND MDLS BRING LOW TO FAR SERN
CORNER OF NE JUST AFT 15Z.  NAM ERODES CIN BY 15Z ACRS SWRN IA WITH
MLCAPES AOA 600 J/KG...BUILDING TO AOA 1000 J/KG BY 18Z OVR ERN IA.
THIS LOOK RESONABLE GIVEN MLCAPES ARE ALREADY AOA 500 J/KG APCHG MO
RVR WITH CIN DOWN TO 75 J/KG...AND LTL CLOUD COVER S.  SHEAR WL BE
THE ONLY QUESTION.  DEEP AND SHALLOW SHEAR ADEQUATE AT INITIATION
FOR SUPERCELLS AND TORNADOES...BUT QUICKLY PUSHES EWD OUT OF FA BY
18Z SO SVR WINDOW LOOKS FAIRLY SMALL.  LCL/LFC VALUES SEEM HIGH TOO
SO ALTHOUGH THERE COULD BE AN ISOLD TORNADO...OUR BEST THREAT MAY BE
HAIL AND WIND.  TEMP WISE...AGN STAYED AOA HIGH END OF GUIDANCE
WHICH IS GENERALLY NAM MOS.

BECAUSE OF THIS THINKING...IOWA SVR WX AWARENESS WEEK TORNADO DRILL
AND ASSOCD WATCH AND WRNG TESTS WL BE POSTPONED TIL TMRW.  SAME
TIMES AS SCHEDULED FOR TDA.

XPC DEFORMATION ZN PCPN TO LINGER ACRS FA THRU MUCH OF
NIGHT...SPCLLY NERN HLF SO HAVE RAISED POPS THRU CHC...LIKELY AND
CATEGORICAL CATEGORIES FM S-N.  EVEN HELD SLGT CHCS INTO FAR NERN
PTNS EARLY TMRW.  WND WISE...NICE ISALLOBARIC COUPLET INDICATED ACRS
SFC FEATURES ATTM AND THIS SHOULD CROSS FA TNGT.  ONLY THING HOLDING
BACK ADVY WL BE ONGOING PCPN AND UVM WHICH COULD TEMPER FCST MIXING
SOMEWHAT.  WENT WITH HIGHER NAM MOS VALUES FOR WNDS.

LTL WX IN LATER PDS BUT DID ADD MENTION OF SLGT CHCS THU NGT AS WEAK
NW FLOW SHRT WV DROPS DOWN MO VLY.  FOLLOWED BLEND OF GUIDANCE WITH
TNGT THRU FRI WITH FOLLOWING XCPTNS...FCST SOUNDINGS WITH MIXING
SUGGEST NUDGE TWRD HIGHER END OF GUIDANCE THU...AND LOWER END FRI.

&&

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

&&

SMALL

Hazardous weather outlook, Mar 30, 5:39 AM CST, 8 hours 57 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
539 AM CST WED MAR 30 2005

IAZ007-017-026>028-037>039-048>050-059>062-072>075-082>086-093>097-
311200-
APPANOOSE-BLACK HAWK-BREMER-BUTLER-CERRO GORDO-CLARKE-DALLAS-DAVIS-
DECATUR-FRANKLIN-GRUNDY-HARDIN-JASPER-LUCAS-MADISON-MAHASKA-MARION-
MARSHALL-MONROE-POLK-POWESHIEK-RINGGOLD-STORY-TAMA-UNION-WAPELLO-
WARREN-WAYNE-WORTH-
539 AM CST WED MAR 30 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ABOUT THE SOUTHEAST HALF OF
IOWA...ALONG AND EAST OF A MOUNT AYR...TO ADEL...TO MASON CITY LINE.

.DAY ONE...TODAY AND TONIGHT

WIDELY SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP
DURING THE LATE MORNING HOURS AND THEN BECOME MORE WIDESPREAD BY
AFTERNOON.  SOME OF THE STORMS MAY BE SEVERE WITH LARGE HAIL AND
DAMAGING WINDS.  AN ISOLATED TORNADO IS ALSO POSSIBLE.

THUNDERSTORMS SHOULD END WITH ONLY SHOWERS ANTICIPATED DURING THE
EVENING HOURS...BUT WEST TO NORTHWEST WINDS WILL INCREASE AND
CONTINUE OVERNIGHT.  SUSTAINED WINDS MAY REACH FROM 20 TO 30 MPH
WITH GUSTS TO 40 MPH...AND LOCALLY HIGHER SPEEDS POSSIBLE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THE WINDY CONDITIONS WILL CONTINUE INTO THURSDAY WITH NORTHWEST
WINDS OF 20 TO 30 MPH...AND GUSTS AGAIN TO 40 MPH OR HIGHER.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY DURING THE LATE MORNING AND
AFTERNOON HOURS.

IAZ004>006-015-016-023>025-033>036-044>047-057-058-070-071-081-092-
311200-
ADAIR-ADAMS-AUDUBON-BOONE-CALHOUN-CARROLL-CASS-CRAWFORD-EMMET-GREENE-
GUTHRIE-HAMILTON-HANCOCK-HUMBOLDT-KOSSUTH-PALO ALTO-POCAHONTAS-SAC-
TAYLOR-WEBSTER-WINNEBAGO-WRIGHT-
539 AM CST WED MAR 30 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ABOUT THE NORTHWEST HALF OF
IOWA...ALONG AND WEST OF A BEDFORD...TO BOONE...TO FOREST CITY.

.DAY ONE...TODAY AND TONIGHT

WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE AND
THEN BECOME MORE WIDESPREAD BY LATE MORNING.  A FEW OF THE
STORMS MAY BE SEVERE WITH LARGE HAIL AND DAMAGING WINDS.

THE THREAT OF THUNDERSTORMS SHOULD END BY AFTERNOON WITH ONLY SHOWERS
ANTICIPATED INTO THE EVENING HOURS.  HOWEVER WEST TO NORTHWEST
WINDS WILL INCREASE THIS AFTERNOON AND CONTINUE OVERNIGHT.
SUSTAINED WINDS MAY REACH FROM 20 TO 30 MPH WITH GUSTS TO 40 MPH...
AND LOCALLY HIGHER SPEEDS POSSIBLE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THE WINDY CONDITIONS WILL CONTINUE INTO THURSDAY WITH NORTHWEST
WINDS OF 15 TO 25 MPH...AND GUSTS TO 35 MPH OR HIGHER.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS MORNING.

SMALL

In the hours before

Local storm report, Mar 30, 1:29 PM CST, 1 hour 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
129 PM CST WED MAR 30 2005

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

0118 PM     TSTM WND DMG     5 N GRUNDY CENTER       42.44N 92.77W
03/30/2005                   GRUNDY             IA   LAW ENFORCEMENT

            TWO SEMI TRUCKS BLOWN OVER AT JUNCTION OF HIGHWAY 2O AND
            14.

&&

DREESE

Local storm report, Mar 30, 1:50 PM CST, 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
150 PM CST WED MAR 30 2005

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

0145 PM     TORNADO          3 E MASON CITY          43.15N 93.14W
03/30/2005                   CERRO GORDO        IA   TRAINED SPOTTER

            3 BRIEF TORNADOES.

&&

DREESE

Local storm report, Mar 30, 1:54 PM CST, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
154 PM CST WED MAR 30 2005

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

0142 PM     TORNADO          1 E MASON CITY          43.15N 93.18W
03/30/2005                   CERRO GORDO        IA   TRAINED SPOTTER

            REPORTED BY 3 SPOTTERS

&&

DREESE

Local storm report, Mar 30, 2:02 PM CST, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
202 PM CST WED MAR 30 2005

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

0159 PM     HAIL             6 N BROOKLYN            41.82N 92.46W
03/30/2005  1.00 INCH        POWESHIEK          IA   TRAINED SPOTTER

&&

DREESE

Special weather statement, Mar 30, 2:21 PM CST, 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
221 PM CST WED MAR 30 2005

IAZ028-039-050-310200-
BLACK HAWK IA-BREMER IA-TAMA IA-

THE NATIONAL WEATHER SERVICE HAS CANCELED A PORTION OF TORNADO
WATCH 104 AND HAS ISSUED TORNADO WATCH 106 UNTIL 8 PM CST FOR THE
FOLLOWING AREAS

IN IOWA THE NEW WATCH INCLUDES 3 COUNTIES

IN CENTRAL IOWA

TAMA

IN NORTHEAST IOWA

BLACK HAWK            BREMER

THIS INCLUDES THE CITIES OF...TAMA...WATERLOO AND WAVERLY

IAZ007-027-038-310200-
BUTLER IA-GRUNDY IA-WORTH IA-

IN IOWA THE NEW WATCH INCLUDES 3 COUNTIES

IN CENTRAL IOWA

GRUNDY

IN NORTH CENTRAL IOWA

BUTLER                WORTH

THIS INCLUDES THE CITIES OF...NORTHWOOD...
GRUNDY CENTER AND PARKERSBURG

IAZ006-016>017-024>026-035>037-046>049-058>061-071>074-082>084-
093>095-302130-
ADAIR IA-BOONE IA-CERRO GORDO IA-CLARKE IA-DALLAS
IA-DECATUR IA-FRANKLIN IA-GREENE IA-GUTHRIE IA-
HAMILTON IA-HANCOCK IA-HARDIN IA-HUMBOLDT IA-JASPER IA-
LUCAS IA-MADISON IA-MARION IA-MARSHALL IA-POLK IA-
RINGGOLD IA-STORY IA-UNION IA-WARREN IA-WAYNE IA-
WEBSTER IA-WINNEBAGO IA-WRIGHT IA-

THE NATIONAL WEATHER SERVICE HAS ALLOWED TO EXPIRE SEVERE
THUNDERSTORM WATCH 103 FOR THE FOLLOWING AREAS

IN IOWA THIS ALLOWS TO EXPIRE 27 COUNTIES

IN CENTRAL IOWA

BOONE                 DALLAS                HAMILTON
HARDIN                JASPER                MARSHALL
POLK                  STORY                 WEBSTER

IN NORTH CENTRAL IOWA

CERRO GORDO           FRANKLIN              HANCOCK
HUMBOLDT              WINNEBAGO             WRIGHT

IN SOUTH CENTRAL IOWA

CLARKE                DECATUR               LUCAS
MADISON               MARION                RINGGOLD
UNION                 WARREN                WAYNE

IN SOUTHWEST IOWA

ADAIR

IN WEST CENTRAL IOWA

GREENE                GUTHRIE

THIS INCLUDES THE CITIES OF...EAGLE GROVE...HUMBOLDT...NEWTON...
DES MOINES...MASON CITY...MOUNT AYR...OSCEOLA...JEFFERSON...
CRESTON...BOONE...FORT DODGE...GARNER...IOWA FALLS...
FOREST CITY...AMES...INDIANOLA...CORYDON...LAMONI...
MARSHALLTOWN...KNOXVILLE...HAMPTON...WINTERSET...GREENFIELD...
GUTHRIE CENTER...ADEL...CHARITON AND WEBSTER CITY

MYERS

Special weather statement, Mar 30, 2:30 PM CST, 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
230 PM CST WED MAR 30 2005

IAZ062-075-085>086-096>097-302130-
APPANOOSE IA-DAVIS IA-MAHASKA IA-MONROE IA-
POWESHIEK IA-WAPELLO IA-

THE NATIONAL WEATHER SERVICE HAS CANCELED TORNADO WATCH 104 FOR
THE FOLLOWING AREAS

IN IOWA THIS CANCELS 6 COUNTIES

IN CENTRAL IOWA

POWESHIEK

IN SOUTH CENTRAL IOWA

APPANOOSE             MAHASKA               MONROE

IN SOUTHEAST IOWA

DAVIS                 WAPELLO

THIS INCLUDES THE CITIES OF...ALBIA...OTTUMWA...BLOOMFIELD...
CENTERVILLE...GRINNELL AND OSKALOOSA

IAZ007-027>028-038>039-050-310200-
BLACK HAWK IA-BREMER IA-BUTLER IA-GRUNDY IA-TAMA IA-
WORTH IA-

TORNADO WATCH NUMBER 106 REMAINS VALID UNTIL 8 PM CST FOR THE
FOLLOWING AREAS

IN IOWA THIS WATCH INCLUDES 6 COUNTIES

IN CENTRAL IOWA

GRUNDY                TAMA

IN NORTH CENTRAL IOWA

BUTLER                WORTH

IN NORTHEAST IOWA

BLACK HAWK            BREMER

THIS INCLUDES THE CITIES OF...NORTHWOOD...GRUNDY CENTER...TAMA...
WATERLOO...WAVERLY AND PARKERSBURG

MYERS

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 30, 3:38 AM CST	Severe Thunderstorm Warning	DMX	Kossuth	22 min
Mar 30, 4:24 AM CST	Severe Thunderstorm Warning	DMX	Emmet	21 min
Mar 30, 9:21 AM CST	Severe Thunderstorm Warning	DMX	Ringgold, Taylor	45 min
Mar 30, 10:00 AM CST	Severe Thunderstorm Warning	DMX	Ringgold	45 min
Mar 30, 10:58 AM CST	Severe Thunderstorm Warning	DMX	Wayne	47 min
Mar 30, 11:20 AM CST	Severe Thunderstorm Warning	DMX	Polk	28 min
Mar 30, 11:24 AM CST	Severe Thunderstorm Warning	DMX	Calhoun	36 min
Mar 30, 11:31 AM CST	Severe Thunderstorm Warning	DMX	Dallas	29 min
Mar 30, 12:06 PM CST	Severe Thunderstorm Warning	DMX	Story	24 min
Mar 30, 12:13 PM CST	Tornado Warning	DMX	Webster	32 min
Mar 30, 12:43 PM CST	Tornado Warning	DMX	Hamilton, Webster	32 min
Mar 30, 12:55 PM CST	Severe Thunderstorm Warning	DMX	Dallas	50 min
Mar 30, 12:55 PM CST	Tornado Warning	DMX	Wright	35 min
Mar 30, 1:21 PM CST	Severe Thunderstorm Warning	DMX	Butler	39 min
Mar 30, 1:33 PM CST	Severe Thunderstorm Warning	DMX	Poweshiek	42 min
Mar 30, 1:43 PM CST	Tornado Warning	DMX	Cerro Gordo	32 min
Mar 30, 1:46 PM CST	Severe Thunderstorm Warning	DMX	Bremer	44 min
Mar 30, 1:51 PM CST	Tornado Warning	DMX	Worth	39 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2005 Every severe thunderstorm warning in 2005

Sources

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