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Severe weather analysis

Observations and analyses of the atmosphere now, from NWS, WPC and SPC. Not a forecast and not a warning: for those, see the Briefing and the Live tracker.

SPC soundings: feeds current

SPC soundings: Feed current; checked .

Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.

Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at Flagstaff, AZ (FGZ), 00Z. Its levels are in the table below.
Observed Sounding at Flagstaff, AZ (FGZ), for (5 h 6 min ago). SPC’s graphic; the values in its panels (CAPE, shear, the indices) are SPC’s computations from these levels. Data: NOAA/SPC.

A balloon launched about an hour before the time named, measuring as it rose and drifted with the wind: the atmosphere above one place, at one time. Model soundings, which are forecasts, are not shown here.

The levels this sounding was drawn from (46)
Flagstaff, AZ (FGZ): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
793 mb2192 m13.8-0.2070° 14 kt
781 mb2318 m12.0-4.0—
770 mb2438 m10.8-4.5095° 27 kt
741 mb2743 m7.7-5.6100° 25 kt
723 mb2946 m5.6-6.4—
700 mb3206 m6.0-10.0095° 33 kt
682 mb3420 m6.8-13.2—
662 mb3658 m5.7-15.6125° 32 kt
651 mb3800 m5.0-17.0—
614 mb4267 m1.6-19.1140° 23 kt
570 mb4868 m-2.9-21.9—
548 mb5182 m-5.4-22.8130° 14 kt
527 mb5486 m-7.8-23.6110° 9 kt
504 mb5829 m-10.5-24.5—
500 mb5890 m-11.1-25.1135° 15 kt
487 mb6096 m-12.5-28.3130° 16 kt
467 mb6401 m-15.1-29.0120° 18 kt
431 mb7010 m-20.4-32.7115° 19 kt
414 mb7300 m-22.9-34.9—
400 mb7550 m-25.1-36.1110° 22 kt
380 mb7925 m-28.6-38.5110° 28 kt
366 mb8190 m-31.1-40.1—
349 mb8534 m-31.8-44.8125° 24 kt
334 mb8839 m-33.3-48.4125° 21 kt
320 mb9144 m-34.9-51.9135° 24 kt
306 mb9449 m-37.0-54.4105° 15 kt
300 mb9590 m-38.1-55.1110° 12 kt
280 mb10058 m-42.1-58.0135° 12 kt
267 mb10363 m-44.6-59.7145° 10 kt
255 mb10668 m-46.6-61.0145° 11 kt
250 mb10810 m-47.5-61.5115° 16 kt
238 mb11135 m-47.3-61.3—
222 mb11582 m-50.0-62.9170° 14 kt
212 mb11887 m-51.8-63.8190° 22 kt
201 mb12238 m-52.5-64.5—
200 mb12270 m-52.5-64.5195° 23 kt
189 mb12635 m-52.7-65.7—
176 mb13093 m-53.7-66.7—
166 mb13468 m-54.7-67.7—
152 mb14021 m-58.3-69.6220° 13 kt
150 mb14110 m-58.9-69.9215° 15 kt
139 mb14586 m-59.9-70.9—
125 mb15240 m-61.9-72.9280° 7 kt
113 mb15850 m-64.2-73.9240° 20 kt
103 mb16431 m-66.3-76.3—
100 mb16610 m-66.9-75.9275° 10 kt
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

District of Columbia briefing

Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.