Alert archive / Iowa / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 173, NWS Des Moines, IA

June 1, 2001Ringgold County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 1, 2001, 3:56 PM CDT for Ringgold County, Iowa. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jun 1, 2001, 3:56 PM CDT (20:56 UTC)
Expired: Jun 1, 2001, 4:35 PM CDT
In force: 39 min
Issued by: NWS Des Moines, IA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Ringgold County, IA

The radar

The Des Moines radar (KDMX), 115 km from the middle of the area, began a volume at 20:56 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 1, 3:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 8.9 hours before the alert went out and 186 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: 7 J/kg
Mixed-layer CIN: -224 J/kg
Mixed-layer LCL: 1233 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 167 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 
WUUS53 KDMX 012057
SVRDSM

IAC159-012135-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
356 PM CDT FRI JUN 1 2001

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  RINGGOLD COUNTY IN SOUTH CENTRAL IOWA

* UNTIL 435 PM CDT

* AT 351 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A     
  SEVERE THUNDERSTORM 10 MILES NORTHWEST OF MOUNT AYR NEAR           
  DIAGONAL...OR ABOUT 62 MILES SOUTHWEST OF DES MOINES...MOVING      
  SOUTHEAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  NEAR DIAGONAL NOW
  NEAR MOUNT AYR AT 405 PM

HAIL UP TO THE SIZE OF NICKELS IS LIKELY IN THE WARNED AREA.

VERY STRONG WINDS UP TO 60 MPH ARE LIKELY IN THE WARNED AREA.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM FRIDAY EVENING FOR
IOWA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM FRIDAY
EVENING FOR SOUTHEASTERN IOWA.

LAT...LON 4091 9443 4061 9447 4058 9402 4090 9402

$$

SEARCY

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 Jun 1, 3:00 PM CDT, 56 minutes earlier.

Area forecast discussion, Jun 1, 3:00 PM CDT, 56 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
300 PM CDT FRI JUN 1 2001

SVR WX UNDERWAY WITH BEST INSTABILITY AND UPR DIVERGENCE NEAR THE MO
BDR ERLY THIS EVE. BOWLING BALL SWINGS THRU TNGT...ERLY TMR WITH CD
AIR SC TMR MNLY NERN HALF FA. NXT PAC WAVE COMING ON SCHD FOR SUN
SETTING THE STAGE FOR INCRD SLY FLOW AND MORE WX. ALL 3 PRIMARY
MODELS ARE REACTING TO MCS DVLPMT ALG THE CNTRL RCKYS SAT NGT AND
PUSHING LRG DVRGT BULLSEYE SEWRD TWDS SWRN IA. THE AVN EVEN HOLDS ON
TO IT TO THE APLCHS MTS BOTH ETAS DVLP ANOTHER COMPLEX SUN AFTN IN
THE DKTAS. BYD THE MCS DVLPMT...IMPRSV THETAE BNDRY ORIENTS NW/SE
ACRS SRN NE INTO NRN MO BY SUN EVE WITH VRY UNSTABLE AIR OVR CNTRL
KS FEEDING NWD OVR THE BNDRY. HENCE HIGH THREAT TSTMS SUN NGT INTO
MON WITH SHWRS ARND TIL UPR WAVE PASSES ERLY ON TUE. I HAVE TUE DRY
ATTM MAY HAVE TO PUT IN SHWRS...AT LEAST ERN AND PSBLY SRN FA. DRY
BYD TUE. TMPS ABT AS XPCD...CONTD BLO NORMAL WITH 40S TNGT...50S
BYD. HIGHS 65-75.

.DSM...NONE
MYERS

In the hours before

Special weather statement, Jun 1, 1:23 PM CDT, 2 hours 33 minutes before

CENTRAL IOWA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
123 PM CDT FRI JUN 1 2001

A VIGOROUS UPPER LEVEL SYSTEM AND SURFACE COLD FRONT WILL SLIDE INTO
MINNESOTA AND IOWA THIS AFTERNOON AND TONIGHT. PLENTY OF COLD AIR IS
AVAILABLE ALONG WITH STRONG WINDS ALOFT TO PRODUCE ROTATING AND FAST
MOVING THUNDERSTORMS. SINCE THE COLD AIR IS FAIRLY LOW IN THE
ATMOSPHERE FOR THIS TIME OF YEAR...LARGE HAIL CAN BE EASILY PRODUCED
BY STRONG STORMS. INSTABILITY CONTINUES TO INCREASE OVER SOUTHERN
IOWA AHEAD OF THE FRONT...WHICH WILL AID IN STRONGER STORM
DEVELOPMENT THROUGH THE AFTERNOON. THERE IS A THREAT OF ISOLATED
TORNADOES LATER THIS AFTERNOON AND INTO THE EVENING AS THE COLD
FRONT DRIVES INTO THE SOUTHEAST HALF OF THE STATE. LARGE HAIL WILL
BE THE GREATEST SEVERE WEATHER THREAT.

SEE SITE SPECIFIC DETAILS BELOW FOR MORE INFORMATION.

IAZ005>007-016-017-023>028-033>039-044>050-057>062-070>075-081>086-
092>097-020000-
ADAIR-ADAMS-APPANOOSE-AUDUBON-BLACK
HAWK-BOONE-BREMER-BUTLER-CALHOUN-CARROLL-CASS-CERRO
GORDO-CLARKE-CRAWFORD-DALLAS-DAVIS-DECATUR-FRANKLIN-GREENE-GRUNDY-
GUTHRIE-HAMILTON-HANCOCK-HARDIN-HUMBOLDT-JASPER-KOSSUTH-LUCAS-
MADISON-MAHASKA-MARION-MARSHALL-MONROE-POCAHONTAS-POLK-POWESHIEK-
RINGGOLD-SAC-STORY-TAMA-TAYLOR-UNION-WAPELLO-WARREN-WAYNE-WEBSTER-
WINNEBAGO-WORTH-WRIGHT-
INCLUDING THE CITIES OF...ALGONA...AMES...ATLANTIC...BOONE...
CARROLL...CENTERVILLE...CHARITON...CRESTON...DENISON...DES MOINES...
FORT DODGE...GRINNELL...INDIANOLA...IOWA FALLS...KNOXVILLE...
LAMONI...MARSHALLTOWN...MASON CITY...NEWTON...OSKALOOSA...OTTUMWA...
PELLA...PERRY...WATERLOO...WAVERLY AND WEBSTER CITY
113 PM CDT FRI JUN 1 2001

* EVENT TIMING... THROUGH 8 PM.

* THREAT CATEGORIES...
     TORNADO.......... LOW
     DAMAGING WINDS... MODERATE
     LARGE HAIL....... HIGH
     FLASH FLOODING... LOW

* SPOTTER ACTIVATION OUTLOOK... HIGH

-------------------------------------------------------------------

THREAT KEY:
    TORNADO.......... ANY TORNADO OCCURRENCE
    DAMAGING WINDS... WINDS >= 58 MPH
    LARGE HAIL....... HAIL >= 3/4 INCH DIAMETER
    FLASH FLOODING... FLOODING CAUSED BY HEAVY RAINS WITHIN 6 HOURS
                      OF RAIN EVENT. POSES THREAT TO LIFE OR
                      PROPERTY.

THREAT CATEGORY KEY:  PROBABILITY OF THREAT OCCURRING WITHIN 25
                      MILES OF POINT WITHIN FORECAST AREA
    NONE....... NOT EXPECTED.  LESS THAN 5% ( 2% FOR TORNADOES)
    LOW........ 5-15% (2-15% FOR TORNADOES)
    MODERATE... 25-35%
    HIGH....... 45% OR GREATER

SPOTTER ACTIVATION OUTLOOK KEY:
    NOT EXPECTED
    LOW........ ACTIVATION POSSIBLE BUT NOT LIKELY
    MODERATE... POSSIBILITIES ABOUT 50-50
    HIGH....... ACTIVATION LIKELY

FOR MORE INFORMATION ON PROBABILISTIC SEVERE WEATHER OUTLOOKS...GO
TO THE STORM PREDICTION CENTER WEBSITE AT
WWW.SPC.NOAA.GOV/PRODUCTS/OUTLOOK/PROBINFO.HTML .

MYERS

Local storm report, Jun 1, 1:57 PM CDT, 1 hour 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
157 PM CDT FRI JUN 01 2001

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0150 PM    4 W MANILLA               IA   TORNADO
06/01/01   CRAWFORD                       REPORTED BY HAM RADIO
                                          OPERATOR.

Local storm report, Jun 1, 3:21 PM CDT, 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
321 PM CDT FRI JUN 01 2001

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0125 PM    2 NW DENISON              IA   TORNADO
06/01/01   CRAWFORD                       REPORTED BY EMERGENCY
                                          MANAGEMENT. 7 FUNNELS
                                          AND 2 TORNADOES.

0140 PM    BELMOND                   IA   1 INCH HAIL
06/01/01   WRIGHT                         REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0140 PM    CHARTER OAK               IA   TORNADO
06/01/01   CRAWFORD                       REPORTED BY EMERGENCY
                                          MANAGEMENT.

0155 PM    1 N ALEXANDER             IA   1 INCH HAIL
06/01/01   FRANKLIN                       REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0220 PM    5 E ALEXANDER             IA   1 INCH HAIL
06/01/01   FRANKLIN                       REPORTED BY EMERGENCY
                                          MANAGEMENT.

0245 PM    3 S DUMONT                IA   .88 INCH HAIL
06/01/01   BUTLER                         REPORTED BY STORM
                                          SPOTTER.

0247 PM    DUMONT                    IA   .75 INCH HAIL
06/01/01   BUTLER                         REPORTED BY STORM
                                          SPOTTER.

Local storm report, Jun 1, 3:34 PM CDT, 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
334 PM CDT FRI JUN 01 2001

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0130 PM    5 N DENISON               IA   .88 INCH HAIL
06/01/01   CRAWFORD                       REPORTED BY STORM
                                          SPOTTER.

Local storm report, Jun 1, 3:50 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
350 PM CDT FRI JUN 01 2001

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0306 PM    12 NE GREENFIELD          IA   WIND DAMAGE
06/01/01   ADAIR                          POWERLINES BLOWN DOWN
                                          IN THUNDERSTORM.
                                          REPORTED BY LAW
     W                                     ENFORCEMENT OFFICIAL.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 1, 1:21 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	29 min
Jun 1, 1:22 PM CDT	Severe Thunderstorm Warning	DMX	Emmet	28 min
Jun 1, 1:31 PM CDT	Severe Thunderstorm Warning	DMX	Franklin, Wright	29 min
Jun 1, 1:42 PM CDT	Tornado Warning	DMX	Crawford	18 min
Jun 1, 1:52 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Carroll, Sac	28 min
Jun 1, 2:01 PM CDT	Severe Thunderstorm Warning	DMX	Franklin, Grundy	29 min
Jun 1, 2:28 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Franklin	42 min
Jun 1, 2:30 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Webster	40 min
Jun 1, 2:44 PM CDT	Severe Thunderstorm Warning	DMX	Guthrie	31 min
Jun 1, 2:48 PM CDT	Tornado Warning	DMX	Butler	32 min
Jun 1, 2:59 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Cass	41 min
Jun 1, 3:06 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Madison, Union	39 min
Jun 1, 3:10 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin	40 min
Jun 1, 3:22 PM CDT	Tornado Warning	DMX	Black Hawk, Butler	38 min
Jun 1, 3:23 PM CDT	Severe Thunderstorm Warning	DMX	Bremer	32 min
Jun 1, 3:38 PM CDT	Severe Thunderstorm Warning	DMX	Hardin	32 min
Jun 1, 3:58 PM CDT	Severe Thunderstorm Warning	DMX	Butler	32 min
Jun 1, 4:00 PM CDT	Tornado Warning	DMX	Black Hawk	30 min
Jun 1, 4:13 PM CDT	Tornado Warning	DMX	Black Hawk, Bremer, Butler	42 min
Jun 1, 4:51 PM CDT	Tornado Warning	DMX	Black Hawk	14 min
Jun 1, 5:00 PM CDT	Severe Thunderstorm Warning	DMX	Hardin	30 min
Jun 1, 5:20 PM CDT	Severe Thunderstorm Warning	DMX	Grundy	40 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2001 Every severe thunderstorm warning in 2001

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.