PAGER - M 5.9 - SOUTH ISLAND OF NEW ZEALAND

Alert level does not include impacts from earthquake-related hazards such as tsunamis, landslides, fires or liquefaction.

Earthquake Shaking Alert Level: ORANGE

Download Alert PDFWhat's this?Friday, December 23rd, 2011 at 02:18:02 UTC (15:18:02 local)Location: 43.5° S, 172.8° EDepth: 4kmEvent Id: USC0007B9YAlert Version: 4Created: 17 hours, 38 minutes after earthquake.
Global Location

Alert Information

Orange alert level for economic losses. Significant damage is likely and the disaster is potentially widespread. Estimated economic losses are less than 1% of GDP of New Zealand. Past events with this alert level have required a regional or national level response. Green alert level for shaking-related fatalities. There is a low likelihood of casualties.
Estimated FatalitiesFatality Alert Level: GREEN
ESTIMATED FATALITY ALERT: GREEN
ESTIMATED FATALITIES (LEVEL)Probability (%)
0 (GREEN)
 
81
1 to 9 (YELLOW)
 
19
10 to 99 (YELLOW)0
100 to 999 (ORANGE)0
1 to 10 thousand (RED)0
10 to 100 thousand (RED)0
100 thousand + (RED)0
Estimated Economic LossesEconomic Alert Level: ORANGE
ESTIMATED ECONOMIC ALERT: ORANGE
ESTIMATED VALUE IN USD (LEVEL)Probability (%)
0 to 1 million (GREEN)1
1 to 10 million (YELLOW)
 
9
10 to 100 million (YELLOW)
 
28
100 million to 1 billion (ORANGE)
 
36
1 to 10 billion (RED)
 
20
10 to 100 billion (RED)
 
5
100 billion + (RED)1

Detailed Information

Estimated Population Exposed to Earthquake Shaking
Estimated Modified Mercalli IntensityIII-IIIIVVVIVIIVIIIIXX
Est. Population Exposure---*48*87k*103k302k75k300
Perceived ShakingNot FeltWeakLightModerateStrongVery StrongSevereViolentExtreme
Potential Structure DamageResistantnonenonenoneV. LightLightModerateModerate/HeavyHeavyV. Heavy
VulnerablenonenonenoneLightModerateModerate/HeavyHeavyV. HeavyV. Heavy
*Estimated exposure only includes population within calculated shake map area
Population Exposure
Population per ~1 sq. km. from LandScan
Population Exposure Map

Structure Information Summary

Overall, the population in this region resides in structures that are resistant to earthquake shaking, though some vulnerable structures exist.

Historical Earthquakes (with MMI)

Date (UTC)Dist (km)MagMax MMI (#)Shaking Deaths
2001-12-073305.8VII (476)0
1984-06-241766.1VIII (18)0
1990-02-101316VIII (61)0

Selected Cities Exposedfrom GeoNames Database of Cities with 1,000 or more residents.
MMICityPopulation
VIChristchurch364k
VIWoodend3k
VLincoln2k
VAmberley1k
VRolleston3k
VBurnham1k
VOxford2k
VDarfield2k
IVTimaru28k
IVGreymouth9k
IVHokitika3k

(k = x1,000)

Historical Events Map
Nearby Events in the EXPO-CAT Earthquake Catalog
#Date/TimeMagLat, Lon, DepthCountryMax MMI (Exposed)DeathsSecondary Effects
ShakingTotal
11977-01-18
05:41 UTC
6.141.75° S, 174.38° E
41km
NZVI (57 k)00
21984-06-24
13:29 UTC
6.143.6° S, 170.67° E
9km
NZVIII (18)00
31990-02-10
03:27 UTC
642.31° S, 172.84° E
1km
NZVIII (61)00
41990-02-10
03:54 UTC
5.742.39° S, 172.81° E
15km
NZVIII (6)00
51991-01-28
12:58 UTC
5.741.97° S, 171.77° E
27km
NZVI (8 k)00
61991-01-28
18:00 UTC
5.841.97° S, 171.77° E
18km
NZVI (6 k)00
71994-06-18
03:25 UTC
6.743.12° S, 171.65° E
11km
NZVII (33)00
81994-06-19
13:43 UTC
5.943.17° S, 171.63° E
7km
NZVIII (12)00
91995-11-24
06:18 UTC
6.142.99° S, 171.84° E
4km
NZVII (71)00
102001-12-07
19:27 UTC
5.844.2° S, 168.84° E
35km
NZVII (476)00

PAGER content is automatically generated, and only considers losses due to structural damage. Limitations of input data, shaking estimates, and loss models may add uncertainty. PAGER results are generally available within 30 minutes of the earthquake’s occurrence. However, information on the extent of shaking will be uncertain in the minutes and hours following an earthquake and typically improves as additional sensor data and reported intensities are acquired and incorporated into models of the earthquake's source. Users of PAGER estimates should account for uncertainty and always seek the most current PAGER release for any earthquake.