Alert archive / Iowa / Tornado Warnings in 2005

Tornado Warning 5, NWS Des Moines, IA

March 30, 2005Worth County, Iowa

NWS Des Moines, IA issued this tornado warning at Mar 30, 2005, 1:51 PM CST for Worth 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 as issued.

The facts

Issued: Mar 30, 2005, 1:51 PM CST (19:51 UTC)
Expired: Mar 30, 2005, 2:30 PM CST
In force: 39 min
Issued by: NWS Des Moines, IA
Area: Counties, with a storm outline in the text

County Worth County, IA

The radar

The Minneapolis radar (KMPX), 169 km from the middle of the area, began a volume at 19:51 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
Mar 30, 8:40 AM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 7.9 hours before the alert went out and 297 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 
WFUS53 KDMX 301951
TORDMX
IAC195-302030-
/O.NEW.KDMX.TO.W.0005.050330T1951Z-050330T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
151 PM CST WED MAR 30 2005

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  WORTH COUNTY IN NORTH CENTRAL IOWA.

* UNTIL 230 PM CST.

* AT 148 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 6 MILES NORTHEAST OF MASON CITY...AND MOVING
  NORTH AT 25 MPH.

* THIS STORM WILL BE...
  5 MILES EAST OF MANLY BY 155 PM CST.
  NEAR GRAFTON BY 205 PM CST.

THIS STORM HAS ALREADY PRODUCED TORNADOES EAST OF MASON CITY.

THIS IS A HAZARDOUS SITUATION. SEEK SHELTER IN A BASEMENT...OR IN AN
INTERIOR ROOM. STAY AWAY FROM WINDOWS. IF YOU ARE OUTSIDE OR IN A
CAR...SEEK SHELTER IN A REINFORCED BUILDING.

LAT...LON 4325 9341 4324 9306 4350 9306 4348 9336

$$

JOHNSON

2 follow-up statements

000 
WWUS53 KDMX 302022
SVSDMX

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

IAC195-302030-
/O.CON.KDMX.TO.W.0005.000000T0000Z-050330T2030Z/
WORTH IA-
222 PM CST WED MAR 30 2005

...A TORNADO WARNING CONTINUES FOR WORTH COUNTY UNTIL 230 PM CST...

AT 219 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 6 MILES EAST OF NORTHWOOD...OR 21 MILES NORTH OF
MASON CITY...AND MOVING NORTH AT 25 MPH.

THE STORM SHOULD EXIT THE COUNTY BY 230 PM. 

LAT...LON 4325 9341 4324 9306 4350 9306 4348 9336

$$

JOHNSON

000 
WWUS53 KDMX 302028
SVSDMX

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

IAC195-302038-
/O.EXP.KDMX.TO.W.0005.000000T0000Z-050330T2030Z/
WORTH IA-
228 PM CST WED MAR 30 2005

...THE TORNADO WARNING FOR WORTH COUNTY HAS BEEN ALLOWED TO EXPIRE...

AT 223 PM CST...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE WEAKENED...AND NO
LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. THEREFORE...THE
TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 4325 9341 4324 9306 4350 9306 4348 9336

$$

JOHNSON

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, 2:36 PM CST	Severe Thunderstorm Warning	DMX	Jasper	24 min

Nearby

Tornado Warnings in Iowa, 2005 Every tornado warning in 2005 Tornadoes 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.